Exocelina ransikiensis sp. nov. from the Bird’s Head of New Guinea (Coleoptera: Dytiscidae: Copelatinae)
Shaverdo Helena, Panjaitan Rawati, Balke Michael
Acta Entomologica Musei Nationalis Pragae 56(1): 103-108, 2016
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Abstract: Exocelina ransikiensis sp. nov. is described from the eastern part of the
Bird’s Head Peninsula, New Guinea (West Papua Province, Indonesia). It is the
eighth Exocelina Broun, 1886 species known from the peninsula, and clearly
differs from the other species, all of which belong to the E. ekari-group, by
its smaller size and shape of the male antennae and genitalia. Based on our
study of the morphological characters and molecular phylogenetic analysis, we
propose a separate species group for it. Important diagnostic characters (dorsal
habitus and coloration, as well as the shape of the male antennae, protarsomeres
4–5, median lobe, and parameres) of the new species are illustrated.
Key words: Coleoptera, Dytiscidae, Copelatinae, Exocelina, new species, Bird’s Head Peninsula, New Guinea
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