Introduction of the Exocelina Ekari-Group with Descriptions of 22 New Species from New Guinea

Coleoptera, Dytiscidae, Copelatinae
ZooKeys No. 250

By Helena V. Shaverdo, et al.
December 2012
Distributed By
ISBN: 9789546426635                     
76 pages, Illustrated
$57.50 Paper original

The volume contains descriptions of 22 new species of New Guinean Exocelina Broun, 1886 with a key to described species of the E. ekari-group. The genus Exocelina is a recently discovered monophyletic group of water beetles of Australian origin and with high level of diversification and endemism throughout the Oriental, Australian, and Pacific Regions. So far it included 94 valid species, most of which occur in New Guinea. Including the newly described species, the extraordinary rich Exocelina fauna of the island contains 63 described species and more than 80 additional new species, which are currently under study. The Exocelina ekari-group, with 26 described and approximately 20 undescribed species, is the largest group of the genus. This work aims to define the group morphologically, to provide detailed species descriptions with data on their distribution, and, including 49 figures, to illustrate the morphology of the group as properly as possible. The key allows identification of all described species of the E. ekari-group, and the section “Habitats” not only provides information on habitat requirements of the species but also useful instructions for their sampling.


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