Ostomopsinae, Sen Gupta & Crowson, 1973

Jałoszyński, Paweł & Ślipiński, Adam, 2021, Revision of the subfamily Ostomopsinae (Coleoptera: Cerylonidae), Zootaxa 4985 (4), pp. 459-481 : 460

Subfamily Ostomopsinae

Ostomopsini Sen Gupta & Crowson, 1973: 400 (as tribe of Murmidiinae ).

Ostomopsinae : Lawrence & Stephan, 1975: 146 (as subfamily of Cerylonidae ).

Emended diagnosis. BL 1–2 mm; broadly or elongate oval beetles; dorsum flat to moderately convex, densely setose; lateral edges of pronotum and sometimes of elytra crenulate (in some species indistinctly so). Head with distinct frontoclypeal groove (= ‘suture’); lacking occipital ridge; antenna 10-segmented; club medially constricted and bearing specialized sensilla at constriction site; terminal maxillary and labial palpomeres non-aciculate, gradually tapering to rounded apex; head ventrally with long subocular ridges. Prothorax transverse, without antennal cavities; prosternal process as broad as 1–1.5 width of procoxa; procoxal cavities externally and internally open. Elytron with nine rows of punctures. Mesocoxae broadly separated; metaventral and abdominal postcoxal lines absent; tarsi 3-3-3 with tarsomeres simple; empodium present. Abdomen with 5 freely articulated ventrites, terminal ventrite crenulate; aedeagus with penis slender with paired struts, tegmen with fused parameres.

Composition and distribution. One genus with six species (two known previously and four newly described), distributed (alphabetically) in Christmas Island, Cuba, Guadeloupe, Hispaniola, Jamaica, Mexico, Montserrat, New Caledonia, Northern Mariana Islands, Panama, Seychelles, Solomon Islands, Thailand, and USA.