Caledomus Kirejtshuk et Kovalev, 2017

Kirejtshuk, Alexander G. & Kovalev, Alexey V., 2022, Monograph on the Cillaeinae (Coleoptera: Nitidulidae) from the Australian Region with comments on the taxonomy of the subfamily, Zootaxa 5103 (1), pp. 1-133 : 78-81

31. Genus Caledomus Kirejtshuk et Kovalev, 2017

Caledomus Kirejtshuk et Kovalev, 2017: 444

Type species: Caledomus extraordinarius Kirejtshuk et Kovalev, 2017: 446 ; recent, New Caledonia (by monotypy)

Diagnosis. This genus can be diagnosed after the above key to genera and subgenera and it is distinct from other genera from Australia and surrounding territories in the set of the following characters: head subflattened, eyes of moderate size and located at midlength, antennal grooves distinct, slightly convergent and slightly S-curved; pronotum convex at posterior edge, widely rounded anterior and posterior angles; prosternum with anterior edge projecting anteriorly forming a wide and short chin piece; prosternal process forming a unified median plate widening as anteriorly as posteriorly, strongly widened at truncate apex; abdominal laterosternites V and VI widened posteriorly; narrowly separated metacoxae and posterior edge of metaventrite angularly excised; tarsomeres 1–3 distinctly widely lobed; male anal sclerite with deep funnel-shaped invagination in the middle of posterior side, but without serrations along its posterior edge.

Сomparison. The genus Caledomus shares a considerable similarity with Adocimus , Allenipeplus , Brittonoma and Ithyphenes . The male anal sclerite of Caledomus extraordinarius is somewhat similar to that in Cillaeus from the Afro-Malgasy (Afro-Madagascan) areas and members of both demonstrate a significant similarity in their general appearance. However Caledomus differs from Cillaeus in the characters of the head (pregenal processes wider and more projecting anteriorly, shape of mentum and hypostomal sinuses), and also in the widely rounded anterior angles and clearly explanate sides of pronotum, subpentagonal scutellar shield, abdominal laterosternites V and VI clearly widened posteriorly, presence of a chin piece of the anterior edge of prosternum, elevated median part of prosternum, concavity at the middle of the hypopygidium of both sexes, and in the structure of the anal male sclerite and genitalia of both sexes.

Notes on bionomy. The type series was collected in the base the Bromeliad leaves ( Kirejtshuk & Kovalev 2016).

Composition and distribution. This genus includes only the type species ( Kirejtshuk & Kovalev, 2017), which is known from New Caledonia.