Taxonomy of Aulacochilus (Coleoptera: Erotylidae: Erotylinae) From China, with a Key Based on Adult Characters

Taxonomy of Aulacochilus (Coleoptera: Erotylidae: Erotylinae) From China, with a Key Based on... The history of taxonomy of Aulacochilus from China was reviewed. A key based on adult characters to separate the Chinese species of this genus is presented. A map of the collecting sites in China is given. One new species, Aulacochilus xingtaiensis sp. nov., from China is described and illustrated. Key words: Coleoptera, Erotylidae, Aulacochilus, new species, key Chevrolat (1836) established the genus Aulacochilus for Erotylus species from Laoye mountain in Xingtai city, Hebei province, bring- quadripustulatus Fabricius, 1801. Lacordaire (1842) described eight ing the number of Aulacochilus species in China to 14. Additionally, species of Aulacochilus in his excellent monograph of the Erotyliens. we include a key based on adult characters to the species from China. The genus was revised by Bedel (1871, 1872), who recognized the A map of the collecting sites in China is given (Fig. 1). validity of 19 species. Since then, there were 56 species added to the genus (Chûjô and Chûjô 1989). Currently 5 subgenera and 84 species are known worldwide, of which 13 species were confirmed in Materials and Methods China prior to this publication. Heller (1920) recorded Aulacochilus The material examined included specimens from the extensive col- luniferus Guérin-Méneville (Coleoptera: Erotylidae: Erotylinae) for lections maintained by the authors and their colleagues, as well as, the first time in Taiwan. Achard (1923) described Aulacochilus grou- some Chinese specimens of Aulacochilus from the Museum of Hebei vellei Achard (Coleoptera: Erotylidae: Erotylinae) and Aulacochilus University. The new species was collected in woodland fungus, killed taliensis Achard (Coleoptera: Erotylidae: Erotylinae) from by ethyl acetate, and taken to a laboratory in cotton bags. To exam- Yunnan. Miwa (1929) recorded Aulacochilus janthinus Lacordaire ine male or female genitalia, the abdominal segments were detached (Coleoptera: Erotylidae: Erotylinae) for the first time in Taiwan. from the body after softening in hot water. To clear, the abdominal Later, Chûjô (1936) recorded Aulacochilus sibiricus bedeli Harold segments were boiled for 5 min in 5% potassium hydroxide solution, (Coleoptera: Erotylidae: Erotylinae) for the first time in Taiwan. and then washed in distilled water. Morphological characters were Mader (1937) recorded Aulacochilus sericeus Bedel (Coleoptera: studied and illustrated using a Nikon SMZ800N stereomicroscope. Erotylidae: Erotylinae) for the first time in Yunnan. Chûjô (1936) Photographs were taken with a Leica M205A camera. Measurements and Miwa and Chûjô (1939) described Aulacochilus issikii Chûjô were taken with an ocular micrometer in millimeters. Morphological (Coleoptera: Erotylidae: Erotylinae) and Aulacochilus shinoharai terminology follows Wegrzynowicz (1997) and Skelley and Leschen Miwa & Chûjô (Coleoptera: Erotylidae: Erotylinae) from Taiwan. (2007). The specimens prepared in this study were deposited in Mader (1939) described Aulacochilus reitteri Mader (Coleoptera: the following public collections: AUHB: Agricultural University of Erotylidae: Erotylinae) from Henan. Mader (1941) then described Hebei; MHBU: The Museum of Hebei University. Aulacochilus klapperichi Mader (Coleoptera: Erotylidae: Erotylinae) from Fujian. Chûjô (1968) recorded Aulacochilus quadripustulatus Nomenclature (Fabricius) (Coleoptera: Erotylidae: Erotylinae) for the first time This paper and the nomenclatural act it contains have been regis- in Hainan. Recently, Li et  al. (2013) recorded two species for the tered in Zoobank (www.zoobank.org), the official register of the first time in China. One was Aulacochilus tricoloratus Gorham International Commission on Zoological Nomenclature. The LSID (Coleoptera: Erotylidae: Erotylinae) from Guangxi and the other (Life Science Identifier) number of the publication is urn:lsid:zoo- was Aulacochilus episcaphoides Gorham (Coleoptera: Erotylidae: bank.org:pub:E173758C-C1BA-429C-B0B3-B08D2B77479A Erotylinae) from Yunnan and Guizhou. Here, we describe one new © The Author(s) 2018. Published by Oxford University Press on behalf of Entomological Society of America. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/ licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com Version of Record, first published online 15 March, 2018 with fixed content and layout in compliance with Art. 8.1.3.2 ICZN. Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018 2 Journal of Insect Science, 2018, Vol. 18, No. 2 Fig. 1. Distributions of the genus Aulacochilus Chevrolat in China. Legend: ▲ = A. luniferus, ■ = A. grouvellei, ◆ = A. taliensis, ★ = A. janthinus, ◎ = A. sibiricus, ✪ = A. sericeus, ❉ = A. issikii, ⊙ = A. shinoharai, ♥ = A. reitteri, ♠ = A. klapperichi, ❂ = A. quadripustulatus Fabricius, ◑ = A. tricoloratus, ☆ = A. episcaphoides, ♣ = A. xingtaiensis sp. nov. Aulacochilus (Aulacochilus) xingtaiensis Zhao et al. new species (Figs. 2, 3–12) (Zoobank LSID: urn:lsid:zoobank.org:act:86C55F03-3BC5-423E- 81D0-9F06E7E4F95B) Type Material HOLOTYPE male: ‘CHINA: Hebei Province, Xingtai City, Shahe County, western valley, Laoye mountain, 3-IIV-2015, woodland fungi, Xing-long Bai and Ling Bai cols’. PARATYPES (3 males, 15 females) labeled: same data as holotype (1 male). The holotype (1 male) and paratypes (2 males, 10 females) are deposited in MHBU and the other paratypes (1 male, 5 females) are keep in AUHB. Etymology The specific epithet was derived from Xingtai city, Hebei province, China where this species was collected, combined with the Latin suf- fix -ensis, meaning from a locality. Holotype male Total length: 7.5 mm, width: 4.0 mm. Body elongate-oval, strongly convex in lateral view, widest at basal fourth of elytra, general color black, lateral and basal areas of pronotum and underside of body deep red-black, moderately shining. Elytron with an orange mark Fig. 2. A. xingtaiensis sp. nov. holotype. Dorsal habitus. Scale line: 1.00 mm. occupying basal two thirds, leaving a black mark on humerus, one black spot near middle of the anterior border and two subbasal 40: 16: 16: 14: 16: 20: 34: 27: 28. The terminal segment of maxillary palp black spots at middle on disc; basal border of orange mark with two (Fig. 5) triangular, sides rounded, lateral angle blunt, medial angle 90° or teeth along posterior border (Fig. 2). more, length about 0.74 × as long as width. Mentum (Fig. 6) with plate Head (Fig. 3) coarsely and sparsely punctured on vertex, vertex punc- triangular, both sides emarginate, with middle area depressed; submentum ture size= 0.5× facet, separated by 2–3 diameters, distinct depression each roundly and roughly punctured, with lateral border strongly margined. side along inner border of eye. Clypeus coarsely and closely punctured, Pronotum (Fig. 7) widest at basal third (pronotum length/width clypeus puncture size = 0.5 × facet, nearly coalescing, anterior border fee- ratio  =  0.54); lateral border slightly curved, strongly margined; bly emarginate, a fovea on each side of the base. Eyes large, moderately anterior border straight opposite head, margined only behind eyes; prominent and coarsely faceted; interocular distance 0.65 times width of basal border weakly sinuate, lacking margin in the middle. Pronotum head. Antennae (Fig. 4) short, extending to basal two thirds of pronotum, distinctly punctured laterally, puncture size= 1× facet, separated by with long golden setae; antennomere III nearly 2.5 times as long as IV; 1–2 diameters, decreasing in size and density toward median area, antennomere VIII slightly wider than VII; antennomere IX triangular; disc puncture size= 0.5× facet, separated by 3–4 diameters. Anterior antennomere X semicircular; antennomere XI almost fan-shaped, nar- angles projecting; posterior angles obtuse. rower than antennomere X; relative lengths of antennomeres II—XI: 14: Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018 Journal of Insect Science, 2018, Vol. 18, No. 2 3 Figs. 3–12. A. xingtaiensis sp. nov. 3. Head; 4. Antenna; 5. Maxillary palp terminal segment; 6. Mentum; 7. Pronotum; 8. Prosternum; 9. Mesoventrites; 10. Male genitalia in lateral view; 11. Female genitalia in ventral and dorsal views; 12. Female spermatheca. Scale lines: 1.00 mm. Prosternum (Fig.  8) with big punctures laterally, puncture markings within the orange elytral base can differ. One form is marked size  =  2× facet, nearly coalescing; fine punctures medially, often similarly to the holotype, or the two subbasal spots on the elytral disc can obscured. Prosternal process triangular, produced into a blunt be enlarged, merging to form an irregularly shaped single spot (Fig. 13). point anteriorly, and emarginated at posterior border; prosternal lines straight, converging anteriorly and exceeding the front edge of Taxonomic Remarks coxae, not attaining anterior margin. Because A.  xingtaiensis has a small and elongate-oval body, elytra basal width nearly equal to width of pronotal base, and having all Scutellum Pentagonal, with a Few Fine Punctures three sets of coxal lines, it is placed into the subgenus Aulacochilus, Elytra widest at basal fourth, then gradually narrowing to apex, cov- as defined by Lacordaire (1842). A.  xingtaiensis is most similar to ered with short golden setae A. issikii. However, these two species can be distinguished by the fol- Elytron with seven striae; strial punctures stronger at base, grad- lowing combination of characters: A. xingtaiensis antennae extending ually weakened apically and disappearing before apex; intervals two-thirds the length of pronotum have long golden setae, and anten- finely punctured. nomere III is nearly 2.5 times as long as IV, whereas A. issikii anten- Mesoventrite (Fig.  9) broad, with a median transverse pentagonal nae extending to the posterior border of pronotum have long gray depression; sternum with a few fine punctures, puncture size = 0.2× facet. setae and antennomere III is nearly 1.57 times as long as IV; A. xing- Metaventrite distinctly punctured laterally, slightly decreasing in taiensis lacks a shallow depression from anterior border to posterior size medially; coxal lines long. border on lateral areas, whereas A.  issikii has a shallow depression Abdomen coarsely and densely punctured laterally, puncture from anterior border to posterior border on lateral areas of pronotum; size = 1× facet, nearly coalescing; punctures slightly smaller medially, A. xingtaiensis has elytron with seven striae, whereas on A. issikii ely- puncture size  =  0.5 facet, with distinct coxal lines on first ventrite tron has nine; A.  xingtaiensis has a median transverse pentagonal nearly attaining posterior border. depression on mesoventrite, whereas A. issikii has a median transverse Male genitalia (Fig.  10) with median lobe weakly curved, nar- triangular depression; A. xingtaiensis has the median strut of the male rowed to a point; median strut 2.3 times as long as median lobe; genitalia 2.3 times as long as median lobe, whereas A. issikii has the sclerite at anterior end of flagellum double hooked. median strut 2.0 times as long as median lobe. Paratypes (3 males, 15 females) Distribution Total length: 6.9–7.6  mm; width 3.8–4.3  mm. There is no difference A. xingtaiensis is found western valley of Laoye mountain in Shahe between males and females except regarding genitalia. Female genitalia county, Xingtai city, Hebei province, China, at elevations between (Fig. 11) with narrow styli at apex of coxite, covered with setae at apex. 850 and 950 m. This species inhabits woodland fungus. Female spermatheca (Fig. 12) with capsule almost ball shaped. The black Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018 4 Journal of Insect Science, 2018, Vol. 18, No. 2 6 Orange elytral mark lacking black spots in the middle.................7 – Orange elytral mark with black spots in the middle............10 7 Elytron with one orange mark..................................................... ...............................................A. (A.) luniferus Guérin-Méneville – Elytron with two orange marks...........................................8 8 The terminal four abdominal sternites brown.............................. ...............................................A. (A.) shinoharai Miwa & Chûjô – The terminal four abdominal sternites black-blue................9 9 Elytral basal orange mark curved toward the middle, c-shaped.... ...................................................................A. (A.) reitteri Mader – Elytral basal orange mark not curved toward the middle, more quadrate................A. (A.) quadripustulatus (Fabricius) 10 Elytron with one orange mark.................................................11 – Elytron with two orange marks.........................................13 11 Terminal segment of maxillary palp length <0.5 times as long as width...................................................A. (A.) grouvellei Achard – Terminal segment of maxillary palp length >0.5 times as long as width............................................................................12 12 Antennomere III about 2.5 times as long as IV, elytron with seven striae, a median transverse pentagonal depression on mesoventrite .......................................A. (A.) xingtaiensis Zhao et al. sp. nov. – Antennomere III about 1.6 times as long as IV, elytron with nine striae, a median transverse triangular depression on mesoventrite...........................................A. (A.) issikii Chûjô Fig. 13. A. xingtaiensis sp. nov. paratype. Dorsal habitus. Scale line: 1.00 mm. 13 Male genitalia with median lobe truncate at apex in lateral view... .....................................................A. (A.) episcaphoides Gorham Key to the Subgenera of Aulacochilus Chevrolat (Modified – Male genitalia with median lobe hooked at apex in lateral From Chûjô 1987) view...................................................A. (A.) taliensis Achard 1 Pro-, meso-, and metacoxal lines present...................................... .......................................Aulacochilus (Aulacochilus) Lacordaire Acknowledgments – Pro- or mesocoxal lines present, metacoxal lines absent........2 We thank the help from Xing-long Bai and Ling Bai (both MHBU) with specimen collection. We are grateful to the anonymous reviewers for critically reading the 2 Elytral punctation confused, no striae evident.............................3 manuscript and providing useful comments. The work was supported by the State – Elytral with striae obvious in rows.......................................4 Natural Sciences Foundation Monumental Projects of China (No. 31750002), 3 Body rather elongate-oval, mesocoxal lines absent....................... the National Natural Science Foundation of Hebei (No. C2015204078), and Outstanding Talents of Agricultural University of Hebei (No. 0318011). .............................................Aulacochilus (Olacauchilus) Chûjô – Body oval and very wide, mesocoxal lines present................. ........................................Aulacochilus (Caulaochilus) Chûjô References Cited Achard, J. 1923. Aulacochilus nouveaux (Col. Erotylidae). J.  d'entomol. III: 4 Body oblong, mesocoxal lines absent........................................... 48–51. ..............................................Aulacochilus (Ulacaochilus) Chûjô Bedel, L. 1871. Révision du genre Aulacochilus Lacordaire de la famille des – Body oval, mesocoxal lines present........................................ Érotyliens. Ann. Soc. Ent. France. 1: 271–286. ......................................Aulacochilus (Lacucaochilus) Chûjô Bedel, L. 1872. Supplèment à la révision du genre Aulacochilus Lacordaire et description de quatre espèces nouvelles. Ann. Soc. Ent. France. 2: Key to the Species of Aulacochilus Chevrolat from China Based 403–408. on Adult Characters Chûjô, M. 1936. Descriptions of five new species of Erotylidae from Formosa. Trans. Nat. Hist. Soc. Formosa. 26: 211–214. 1 Body coloration uniformly deep blue or black ............................2 Chûjô, M. 1968. Erotylidae beetles from South-China, Hainan, Taiwan and – Body coloration not monochrome, with color pattern...........5 the Ryukyus. Studies on the erotylid beetles (20). Pacific Ins. Hawaii. 10: 2 Antennomere III about 2.0 times as long as IV.............................. 539–550. ................................................................A. (A.) sibiricus Reitter Chûjô, M., and M. Chûjô. 1987. Erotylidae from New Guinea and the adja- – Antennomere III about 2.5 times as long as IV.......................3 cent islands I (Coleoptera). Esakia. 25: 5–36. 3 Submentum concaved medially ................................................... Chûjô, M., and M.  Chûjô. 1989. A catalog of the Erotylidae (Insecta, Coleoptera) from the Old World (excl. the Ethiopian Region). Esakia. 28: ...................................................................A. (A.) sericeus Bedel 75–96. – Submentum concaved laterally.............................................4 Heller, K. M. 1920. Beitrag zur kenntnis der Erotyliden der Indo-Australischen 4 The basal two thirds of metasternum with a vertical depression region mit besonderer berücksichtigung der philippinischen Arten. Arch. in the middle........................................A. (A.) klapperichi Mader f. Naturg. A: 1–121. – The basal four fifths of metasternum with a vertical depres- Li, J., G. D.  Ren, and X.  Zhao. 2013. Two new record species of the genus sion in the middle........................A. (A.) janthinus Lacordaire Aulacochilus (Coleoptera: Erotylidae) from China. J. Hebei Univ. (Natur. 5 Elytral mark multicolored, changing from orange to yellow Sci. Ed.) 33: 520–523. across mark.................................... A. (A.) tricoloratus Gorham Lacordaire, T. 1842. Monographie des Erotyliens, famille de L’ordre des – Elytral mark uniformly colored...........................................6 Coléptères. Roret, Paris, France, pp. 1–543. Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018 Journal of Insect Science, 2018, Vol. 18, No. 2 5 Mader, L. 1937. Neue Coleopteren aus China und Japan nebst Notizen. Ent. Miwa, Y., and M.  Chûjô. 1939. Descriptions of a new species of Erotylidae Nachr. Bl. 11: 179–186. from Formosa (Coleoptera). Mushi. 12: 76–77. Mader, L. 1939. Neue Coleopteren aus China. Ent. Nachr. Bl. 13: 41–51. Skelley, P. E., and R. A.  B.  Leschen. 2007. Erotylinae (Insecta: Coleoptera: Mader, L. 1941. Erotylidae und Endomychidae (Col.) von Fukien (China). Cucujoidea: Erotylidae): taxonomy and biogeography. Fauna New Mitt. Münchener Ent. Ges. 31: 927–933. Zealand. 59: 1–58. Miwa, Y. 1929. On the Erotylidae of Japan, Formosa, Corea and Saghalien. Wegrzynowicz, P. 1997. Redescription of two species from Erotylus tectiformis group Trans. Nat. Hist. Soc. Formosa. 19: 120–128. (Coleoptera, Erotylidae, Erotylinae). Ann. Zool. (Warszawa). 47: 199–207. 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Taxonomy of Aulacochilus (Coleoptera: Erotylidae: Erotylinae) From China, with a Key Based on Adult Characters

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Abstract

The history of taxonomy of Aulacochilus from China was reviewed. A key based on adult characters to separate the Chinese species of this genus is presented. A map of the collecting sites in China is given. One new species, Aulacochilus xingtaiensis sp. nov., from China is described and illustrated. Key words: Coleoptera, Erotylidae, Aulacochilus, new species, key Chevrolat (1836) established the genus Aulacochilus for Erotylus species from Laoye mountain in Xingtai city, Hebei province, bring- quadripustulatus Fabricius, 1801. Lacordaire (1842) described eight ing the number of Aulacochilus species in China to 14. Additionally, species of Aulacochilus in his excellent monograph of the Erotyliens. we include a key based on adult characters to the species from China. The genus was revised by Bedel (1871, 1872), who recognized the A map of the collecting sites in China is given (Fig. 1). validity of 19 species. Since then, there were 56 species added to the genus (Chûjô and Chûjô 1989). Currently 5 subgenera and 84 species are known worldwide, of which 13 species were confirmed in Materials and Methods China prior to this publication. Heller (1920) recorded Aulacochilus The material examined included specimens from the extensive col- luniferus Guérin-Méneville (Coleoptera: Erotylidae: Erotylinae) for lections maintained by the authors and their colleagues, as well as, the first time in Taiwan. Achard (1923) described Aulacochilus grou- some Chinese specimens of Aulacochilus from the Museum of Hebei vellei Achard (Coleoptera: Erotylidae: Erotylinae) and Aulacochilus University. The new species was collected in woodland fungus, killed taliensis Achard (Coleoptera: Erotylidae: Erotylinae) from by ethyl acetate, and taken to a laboratory in cotton bags. To exam- Yunnan. Miwa (1929) recorded Aulacochilus janthinus Lacordaire ine male or female genitalia, the abdominal segments were detached (Coleoptera: Erotylidae: Erotylinae) for the first time in Taiwan. from the body after softening in hot water. To clear, the abdominal Later, Chûjô (1936) recorded Aulacochilus sibiricus bedeli Harold segments were boiled for 5 min in 5% potassium hydroxide solution, (Coleoptera: Erotylidae: Erotylinae) for the first time in Taiwan. and then washed in distilled water. Morphological characters were Mader (1937) recorded Aulacochilus sericeus Bedel (Coleoptera: studied and illustrated using a Nikon SMZ800N stereomicroscope. Erotylidae: Erotylinae) for the first time in Yunnan. Chûjô (1936) Photographs were taken with a Leica M205A camera. Measurements and Miwa and Chûjô (1939) described Aulacochilus issikii Chûjô were taken with an ocular micrometer in millimeters. Morphological (Coleoptera: Erotylidae: Erotylinae) and Aulacochilus shinoharai terminology follows Wegrzynowicz (1997) and Skelley and Leschen Miwa & Chûjô (Coleoptera: Erotylidae: Erotylinae) from Taiwan. (2007). The specimens prepared in this study were deposited in Mader (1939) described Aulacochilus reitteri Mader (Coleoptera: the following public collections: AUHB: Agricultural University of Erotylidae: Erotylinae) from Henan. Mader (1941) then described Hebei; MHBU: The Museum of Hebei University. Aulacochilus klapperichi Mader (Coleoptera: Erotylidae: Erotylinae) from Fujian. Chûjô (1968) recorded Aulacochilus quadripustulatus Nomenclature (Fabricius) (Coleoptera: Erotylidae: Erotylinae) for the first time This paper and the nomenclatural act it contains have been regis- in Hainan. Recently, Li et  al. (2013) recorded two species for the tered in Zoobank (www.zoobank.org), the official register of the first time in China. One was Aulacochilus tricoloratus Gorham International Commission on Zoological Nomenclature. The LSID (Coleoptera: Erotylidae: Erotylinae) from Guangxi and the other (Life Science Identifier) number of the publication is urn:lsid:zoo- was Aulacochilus episcaphoides Gorham (Coleoptera: Erotylidae: bank.org:pub:E173758C-C1BA-429C-B0B3-B08D2B77479A Erotylinae) from Yunnan and Guizhou. Here, we describe one new © The Author(s) 2018. Published by Oxford University Press on behalf of Entomological Society of America. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/ licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com Version of Record, first published online 15 March, 2018 with fixed content and layout in compliance with Art. 8.1.3.2 ICZN. Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018 2 Journal of Insect Science, 2018, Vol. 18, No. 2 Fig. 1. Distributions of the genus Aulacochilus Chevrolat in China. Legend: ▲ = A. luniferus, ■ = A. grouvellei, ◆ = A. taliensis, ★ = A. janthinus, ◎ = A. sibiricus, ✪ = A. sericeus, ❉ = A. issikii, ⊙ = A. shinoharai, ♥ = A. reitteri, ♠ = A. klapperichi, ❂ = A. quadripustulatus Fabricius, ◑ = A. tricoloratus, ☆ = A. episcaphoides, ♣ = A. xingtaiensis sp. nov. Aulacochilus (Aulacochilus) xingtaiensis Zhao et al. new species (Figs. 2, 3–12) (Zoobank LSID: urn:lsid:zoobank.org:act:86C55F03-3BC5-423E- 81D0-9F06E7E4F95B) Type Material HOLOTYPE male: ‘CHINA: Hebei Province, Xingtai City, Shahe County, western valley, Laoye mountain, 3-IIV-2015, woodland fungi, Xing-long Bai and Ling Bai cols’. PARATYPES (3 males, 15 females) labeled: same data as holotype (1 male). The holotype (1 male) and paratypes (2 males, 10 females) are deposited in MHBU and the other paratypes (1 male, 5 females) are keep in AUHB. Etymology The specific epithet was derived from Xingtai city, Hebei province, China where this species was collected, combined with the Latin suf- fix -ensis, meaning from a locality. Holotype male Total length: 7.5 mm, width: 4.0 mm. Body elongate-oval, strongly convex in lateral view, widest at basal fourth of elytra, general color black, lateral and basal areas of pronotum and underside of body deep red-black, moderately shining. Elytron with an orange mark Fig. 2. A. xingtaiensis sp. nov. holotype. Dorsal habitus. Scale line: 1.00 mm. occupying basal two thirds, leaving a black mark on humerus, one black spot near middle of the anterior border and two subbasal 40: 16: 16: 14: 16: 20: 34: 27: 28. The terminal segment of maxillary palp black spots at middle on disc; basal border of orange mark with two (Fig. 5) triangular, sides rounded, lateral angle blunt, medial angle 90° or teeth along posterior border (Fig. 2). more, length about 0.74 × as long as width. Mentum (Fig. 6) with plate Head (Fig. 3) coarsely and sparsely punctured on vertex, vertex punc- triangular, both sides emarginate, with middle area depressed; submentum ture size= 0.5× facet, separated by 2–3 diameters, distinct depression each roundly and roughly punctured, with lateral border strongly margined. side along inner border of eye. Clypeus coarsely and closely punctured, Pronotum (Fig. 7) widest at basal third (pronotum length/width clypeus puncture size = 0.5 × facet, nearly coalescing, anterior border fee- ratio  =  0.54); lateral border slightly curved, strongly margined; bly emarginate, a fovea on each side of the base. Eyes large, moderately anterior border straight opposite head, margined only behind eyes; prominent and coarsely faceted; interocular distance 0.65 times width of basal border weakly sinuate, lacking margin in the middle. Pronotum head. Antennae (Fig. 4) short, extending to basal two thirds of pronotum, distinctly punctured laterally, puncture size= 1× facet, separated by with long golden setae; antennomere III nearly 2.5 times as long as IV; 1–2 diameters, decreasing in size and density toward median area, antennomere VIII slightly wider than VII; antennomere IX triangular; disc puncture size= 0.5× facet, separated by 3–4 diameters. Anterior antennomere X semicircular; antennomere XI almost fan-shaped, nar- angles projecting; posterior angles obtuse. rower than antennomere X; relative lengths of antennomeres II—XI: 14: Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018 Journal of Insect Science, 2018, Vol. 18, No. 2 3 Figs. 3–12. A. xingtaiensis sp. nov. 3. Head; 4. Antenna; 5. Maxillary palp terminal segment; 6. Mentum; 7. Pronotum; 8. Prosternum; 9. Mesoventrites; 10. Male genitalia in lateral view; 11. Female genitalia in ventral and dorsal views; 12. Female spermatheca. Scale lines: 1.00 mm. Prosternum (Fig.  8) with big punctures laterally, puncture markings within the orange elytral base can differ. One form is marked size  =  2× facet, nearly coalescing; fine punctures medially, often similarly to the holotype, or the two subbasal spots on the elytral disc can obscured. Prosternal process triangular, produced into a blunt be enlarged, merging to form an irregularly shaped single spot (Fig. 13). point anteriorly, and emarginated at posterior border; prosternal lines straight, converging anteriorly and exceeding the front edge of Taxonomic Remarks coxae, not attaining anterior margin. Because A.  xingtaiensis has a small and elongate-oval body, elytra basal width nearly equal to width of pronotal base, and having all Scutellum Pentagonal, with a Few Fine Punctures three sets of coxal lines, it is placed into the subgenus Aulacochilus, Elytra widest at basal fourth, then gradually narrowing to apex, cov- as defined by Lacordaire (1842). A.  xingtaiensis is most similar to ered with short golden setae A. issikii. However, these two species can be distinguished by the fol- Elytron with seven striae; strial punctures stronger at base, grad- lowing combination of characters: A. xingtaiensis antennae extending ually weakened apically and disappearing before apex; intervals two-thirds the length of pronotum have long golden setae, and anten- finely punctured. nomere III is nearly 2.5 times as long as IV, whereas A. issikii anten- Mesoventrite (Fig.  9) broad, with a median transverse pentagonal nae extending to the posterior border of pronotum have long gray depression; sternum with a few fine punctures, puncture size = 0.2× facet. setae and antennomere III is nearly 1.57 times as long as IV; A. xing- Metaventrite distinctly punctured laterally, slightly decreasing in taiensis lacks a shallow depression from anterior border to posterior size medially; coxal lines long. border on lateral areas, whereas A.  issikii has a shallow depression Abdomen coarsely and densely punctured laterally, puncture from anterior border to posterior border on lateral areas of pronotum; size = 1× facet, nearly coalescing; punctures slightly smaller medially, A. xingtaiensis has elytron with seven striae, whereas on A. issikii ely- puncture size  =  0.5 facet, with distinct coxal lines on first ventrite tron has nine; A.  xingtaiensis has a median transverse pentagonal nearly attaining posterior border. depression on mesoventrite, whereas A. issikii has a median transverse Male genitalia (Fig.  10) with median lobe weakly curved, nar- triangular depression; A. xingtaiensis has the median strut of the male rowed to a point; median strut 2.3 times as long as median lobe; genitalia 2.3 times as long as median lobe, whereas A. issikii has the sclerite at anterior end of flagellum double hooked. median strut 2.0 times as long as median lobe. Paratypes (3 males, 15 females) Distribution Total length: 6.9–7.6  mm; width 3.8–4.3  mm. There is no difference A. xingtaiensis is found western valley of Laoye mountain in Shahe between males and females except regarding genitalia. Female genitalia county, Xingtai city, Hebei province, China, at elevations between (Fig. 11) with narrow styli at apex of coxite, covered with setae at apex. 850 and 950 m. This species inhabits woodland fungus. Female spermatheca (Fig. 12) with capsule almost ball shaped. The black Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018 4 Journal of Insect Science, 2018, Vol. 18, No. 2 6 Orange elytral mark lacking black spots in the middle.................7 – Orange elytral mark with black spots in the middle............10 7 Elytron with one orange mark..................................................... ...............................................A. (A.) luniferus Guérin-Méneville – Elytron with two orange marks...........................................8 8 The terminal four abdominal sternites brown.............................. ...............................................A. (A.) shinoharai Miwa & Chûjô – The terminal four abdominal sternites black-blue................9 9 Elytral basal orange mark curved toward the middle, c-shaped.... ...................................................................A. (A.) reitteri Mader – Elytral basal orange mark not curved toward the middle, more quadrate................A. (A.) quadripustulatus (Fabricius) 10 Elytron with one orange mark.................................................11 – Elytron with two orange marks.........................................13 11 Terminal segment of maxillary palp length <0.5 times as long as width...................................................A. (A.) grouvellei Achard – Terminal segment of maxillary palp length >0.5 times as long as width............................................................................12 12 Antennomere III about 2.5 times as long as IV, elytron with seven striae, a median transverse pentagonal depression on mesoventrite .......................................A. (A.) xingtaiensis Zhao et al. sp. nov. – Antennomere III about 1.6 times as long as IV, elytron with nine striae, a median transverse triangular depression on mesoventrite...........................................A. (A.) issikii Chûjô Fig. 13. A. xingtaiensis sp. nov. paratype. Dorsal habitus. Scale line: 1.00 mm. 13 Male genitalia with median lobe truncate at apex in lateral view... .....................................................A. (A.) episcaphoides Gorham Key to the Subgenera of Aulacochilus Chevrolat (Modified – Male genitalia with median lobe hooked at apex in lateral From Chûjô 1987) view...................................................A. (A.) taliensis Achard 1 Pro-, meso-, and metacoxal lines present...................................... .......................................Aulacochilus (Aulacochilus) Lacordaire Acknowledgments – Pro- or mesocoxal lines present, metacoxal lines absent........2 We thank the help from Xing-long Bai and Ling Bai (both MHBU) with specimen collection. We are grateful to the anonymous reviewers for critically reading the 2 Elytral punctation confused, no striae evident.............................3 manuscript and providing useful comments. The work was supported by the State – Elytral with striae obvious in rows.......................................4 Natural Sciences Foundation Monumental Projects of China (No. 31750002), 3 Body rather elongate-oval, mesocoxal lines absent....................... the National Natural Science Foundation of Hebei (No. C2015204078), and Outstanding Talents of Agricultural University of Hebei (No. 0318011). .............................................Aulacochilus (Olacauchilus) Chûjô – Body oval and very wide, mesocoxal lines present................. ........................................Aulacochilus (Caulaochilus) Chûjô References Cited Achard, J. 1923. Aulacochilus nouveaux (Col. Erotylidae). J.  d'entomol. III: 4 Body oblong, mesocoxal lines absent........................................... 48–51. ..............................................Aulacochilus (Ulacaochilus) Chûjô Bedel, L. 1871. Révision du genre Aulacochilus Lacordaire de la famille des – Body oval, mesocoxal lines present........................................ Érotyliens. Ann. Soc. Ent. France. 1: 271–286. ......................................Aulacochilus (Lacucaochilus) Chûjô Bedel, L. 1872. Supplèment à la révision du genre Aulacochilus Lacordaire et description de quatre espèces nouvelles. Ann. Soc. Ent. France. 2: Key to the Species of Aulacochilus Chevrolat from China Based 403–408. on Adult Characters Chûjô, M. 1936. Descriptions of five new species of Erotylidae from Formosa. Trans. Nat. Hist. Soc. Formosa. 26: 211–214. 1 Body coloration uniformly deep blue or black ............................2 Chûjô, M. 1968. Erotylidae beetles from South-China, Hainan, Taiwan and – Body coloration not monochrome, with color pattern...........5 the Ryukyus. Studies on the erotylid beetles (20). Pacific Ins. Hawaii. 10: 2 Antennomere III about 2.0 times as long as IV.............................. 539–550. ................................................................A. (A.) sibiricus Reitter Chûjô, M., and M. Chûjô. 1987. Erotylidae from New Guinea and the adja- – Antennomere III about 2.5 times as long as IV.......................3 cent islands I (Coleoptera). Esakia. 25: 5–36. 3 Submentum concaved medially ................................................... Chûjô, M., and M.  Chûjô. 1989. A catalog of the Erotylidae (Insecta, Coleoptera) from the Old World (excl. the Ethiopian Region). Esakia. 28: ...................................................................A. (A.) sericeus Bedel 75–96. – Submentum concaved laterally.............................................4 Heller, K. M. 1920. Beitrag zur kenntnis der Erotyliden der Indo-Australischen 4 The basal two thirds of metasternum with a vertical depression region mit besonderer berücksichtigung der philippinischen Arten. Arch. in the middle........................................A. (A.) klapperichi Mader f. Naturg. A: 1–121. – The basal four fifths of metasternum with a vertical depres- Li, J., G. D.  Ren, and X.  Zhao. 2013. Two new record species of the genus sion in the middle........................A. (A.) janthinus Lacordaire Aulacochilus (Coleoptera: Erotylidae) from China. J. Hebei Univ. (Natur. 5 Elytral mark multicolored, changing from orange to yellow Sci. Ed.) 33: 520–523. across mark.................................... A. (A.) tricoloratus Gorham Lacordaire, T. 1842. Monographie des Erotyliens, famille de L’ordre des – Elytral mark uniformly colored...........................................6 Coléptères. Roret, Paris, France, pp. 1–543. Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018 Journal of Insect Science, 2018, Vol. 18, No. 2 5 Mader, L. 1937. Neue Coleopteren aus China und Japan nebst Notizen. Ent. Miwa, Y., and M.  Chûjô. 1939. Descriptions of a new species of Erotylidae Nachr. Bl. 11: 179–186. from Formosa (Coleoptera). Mushi. 12: 76–77. Mader, L. 1939. Neue Coleopteren aus China. Ent. Nachr. Bl. 13: 41–51. Skelley, P. E., and R. A.  B.  Leschen. 2007. Erotylinae (Insecta: Coleoptera: Mader, L. 1941. Erotylidae und Endomychidae (Col.) von Fukien (China). Cucujoidea: Erotylidae): taxonomy and biogeography. Fauna New Mitt. Münchener Ent. Ges. 31: 927–933. Zealand. 59: 1–58. Miwa, Y. 1929. On the Erotylidae of Japan, Formosa, Corea and Saghalien. Wegrzynowicz, P. 1997. Redescription of two species from Erotylus tectiformis group Trans. Nat. Hist. Soc. Formosa. 19: 120–128. (Coleoptera, Erotylidae, Erotylinae). Ann. Zool. (Warszawa). 47: 199–207. Downloaded from https://academic.oup.com/jinsectscience/article-abstract/18/2/27/4934163 by Ed 'DeepDyve' Gillespie user on 16 March 2018

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