Protosternini (Coleoptera : Hydrophilidae) corroborated as monophyletic and its larva described for the first time: a review of the myrmecophilous genus Sphaerocetum

Protosternini (Coleoptera : Hydrophilidae) corroborated as monophyletic and its larva described... The genus Sphaerocetum Fikáček, 2010 is reviewed on the basis of specimens collected from mixed ant nests shared by Camponotus Mayr, 1861 and Crematogaster Lund, 1831 ants in Peninsular Malaysia. Two new species, S. arboreum , sp. nov. and S. hortulanum , sp. nov., are described. A larva of S. arboreum was collected in the same nest as the adults, implying that it is likely that the entire life cycle takes place inside the ant nest; its association with adults was confirmed by cox1 sequences. It is described in detail and represents the first known larva of the tribe Protosternini. Fragments of four genes ( cox1 , cox2 , 18S and 28S) were amplified for S. arboreum and combined with previously generated data in order to test the position of the genus within the subfamily Sphaeridiinae. The analyses revealed Sphaerocetum as a sister taxon to Protosternum Sharp, 1890, corroborating the monophyly of the tribe Protosternini. Bayesian analysis revealed an alternative hypothesis of the phylogenetic position of the tribe, indicating that Protosternini is a sister-group to Omicrini. This position is supported by the chaetotaxy of the maxillary stipes of the larva, which lacks the increased number of stout setae on the inner face present in all other Sphaeridiinae larvae except Omicrini. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Invertebrate Systematics CSIRO Publishing

Protosternini (Coleoptera : Hydrophilidae) corroborated as monophyletic and its larva described for the first time: a review of the myrmecophilous genus Sphaerocetum

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Publisher
CSIRO Publishing
Copyright
CSIRO
ISSN
1445-5226
eISSN
1445-5226
D.O.I.
10.1071/IS14026
Publisher site
See Article on Publisher Site

References

  • A new species of Omicrus Sharp (Coleoptera: Hydrophilidae) from Puerto Rico and its larva, the first known larva of Omicrini.
    Hansen M. Richardson B. A.
  • MrBayes: Bayesian inference of phylogenetic trees.
    Huelsenbeck J. P. Ronquist F.
  • Molecular phylogeny, evolution and classification of the
    Short A. E. Z. Fikáček M.

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