Orectochilus corniger Zaitzev, 1910

Fery, Hans & Hájek, Jiří, 2016, Nomenclatural notes on some Palaearctic Gyrinidae (Coleoptera), Acta Entomologica Musei Nationalis Pragae 56 (2), pp. 645-663 : 655

Orectochilus corniger Zaitzev, 1910

ZAITZEV (1910: 224) described this species from Japan (Kobe) on the basis of six specimens collected by V. Pliginski and as being similar to Orectochilus scalaris Régimbart, 1880 . Subsequently, HATCH (1926: 453) associated the species with subgenus Patrus Aubé, 1838b (elevated from subgeneric to generic rank by MILLER & BERGSTEN 2012).

OCHS (1930: 69) studied one specimen of O. corniger from ‘ Annam, Song-Dinh’ (central Vietnam, ca. 100 km NW Hue) which was also collected by Pliginski. OCHS (1930) doubted the collecting data of the type specimens and assumed that most probably these must have been mislabelled and collected together with the specimen from Vietnam. As far as we know, Patrus corniger is a strictly Oriental species which has never been recorded again from Japan. This is why we follow OCHS’ (1930) assumption and do not include the species in the new edition of the Palaearctic Catalogue although its type locality remains the Palaearctic Kobe in Japan.