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Stolonicyclops Heggiensis, New Genus, New Species, From Georgia, U.S.A. (Copepoda: Cyclopoida: Cyclopidae)

Stolonicyclops Heggiensis, New Genus, New Species, From Georgia, U.S.A. (Copepoda: Cyclopoida:... AbstractA previously unknown genus and species of cyclopoid copepod, Stolonicyclops heggiensis, was discovered in seepage areas on Heggie's Rock, a granite monadnock in Georgia, U.S.A. The genus is characterized by leg 5 fused to the somite, with 1 dorsal seta and 2 ventral setae on a small knob; the antennule of 11 segments in the female; the swimming legs with 2-segmented rami, except leg 4 endopodite segments partly fused in the female; the spine and seta formulae of swimming legs 2,3,3,3 and 5,4,4,4, respectively; the lack of a seta on the medial (inner) corner of the coxopodite of legs 2-4; leg 4 endopodite segment 2 with 5 appendages; and the lack of sexual dimorphism in the swimming legs, except for the difference in leg 4 endopodite fusion. In several respects, S. heggiensis resembles Bryocyclops (Palaeocyclops) jankowskajae Monchenko from Kazakhstan and Uzbekistan. However, the lack of modified appendages of leg 3 in the male of S. heggiensis precludes assigning it to the genus Bryocyclops. The nature of leg 3 of the male and other plesiomorphic characters of S, heggiensis may indicate that its ancestor diverged earlier than Palaeocyclops from the Bryocyclops ancestral line. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Crustacean Biology Oxford University Press

Stolonicyclops Heggiensis, New Genus, New Species, From Georgia, U.S.A. (Copepoda: Cyclopoida: Cyclopidae)

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References (2)

Publisher
Oxford University Press
Copyright
Copyright 1998 by Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0278-0372
eISSN
1937-240X
DOI
10.2307/1549333
Publisher site
See Article on Publisher Site

Abstract

AbstractA previously unknown genus and species of cyclopoid copepod, Stolonicyclops heggiensis, was discovered in seepage areas on Heggie's Rock, a granite monadnock in Georgia, U.S.A. The genus is characterized by leg 5 fused to the somite, with 1 dorsal seta and 2 ventral setae on a small knob; the antennule of 11 segments in the female; the swimming legs with 2-segmented rami, except leg 4 endopodite segments partly fused in the female; the spine and seta formulae of swimming legs 2,3,3,3 and 5,4,4,4, respectively; the lack of a seta on the medial (inner) corner of the coxopodite of legs 2-4; leg 4 endopodite segment 2 with 5 appendages; and the lack of sexual dimorphism in the swimming legs, except for the difference in leg 4 endopodite fusion. In several respects, S. heggiensis resembles Bryocyclops (Palaeocyclops) jankowskajae Monchenko from Kazakhstan and Uzbekistan. However, the lack of modified appendages of leg 3 in the male of S. heggiensis precludes assigning it to the genus Bryocyclops. The nature of leg 3 of the male and other plesiomorphic characters of S, heggiensis may indicate that its ancestor diverged earlier than Palaeocyclops from the Bryocyclops ancestral line.

Journal

The Journal of Crustacean BiologyOxford University Press

Published: Apr 1, 1998

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