Download or read book Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae) written by Helena V. Shaverdo and published by PenSoft Publishers LTD. This book was released on 2012-12-13 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 Exoce-lina 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 de-tailed 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 de-scribed 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.