Talk:Enochrus tritus

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Dispute

this species will very likely fall as a junior synonym of Enochrus elongatulus (MacLeay, 1871)
- Source: Short (2010: 305, 'The primary differences between Enochrus elongatulus and E. tritus are dorsal coloration and the coarseness of the dorsal ground punctation. Both of these differences are known to be highly variable within species, especially in the genus Enochrus, including other island groups (e.g. Watts 1998). As the aedeagi of the two species are essentially identical, uniformly pale specimens of E. tritus can hardly be distinguished from E. elongatulus. Indeed, it is highly probable that these two species are in fact conspecific. Specimens previously considered E. tritus from the Pacific outside New Zealand (e.g. Cook Islands, Tonga) are more easily accommodated under E. elongatulus. Broun (1880) himself, when describing E. tritus, regarded the paler specimens of E. tritus as a separate species (“Philhydrus variolorum”). I refrain from establishing a formal synonymy here because I have not examined large series of the species from other islands including New Zealand')

Distribution

New Zealand
- Biostatus: unclear
- NOTE: According to Short (2010: 305), material from outside New Zealand is 'more easily accommodated under E. elongatulus', leaving the New Zealand material as a possibly distinct endemic species, though 'likely a synonym or geographical variant of E. elongatulus'

References

Short, A.E.Z. 2010: Hydrophilidae: Review of the subtribe Acidocerina of the Southwest Pacific islands (Coleoptera). Pp. 297-318 in: Jäch, M.A. & Balke, M. (eds.): Water beetles of New Caledonia (part 1). Monographs on Coleoptera, 3. ISSN: 1027-8869

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