Clavicornaltica Scherer, 1974

Clavicornaltica Scherer, 1974: 58 (type species Clavicornaltica besucheti Scherer 1974: 60, by original designation; type locality Sri Lanka; type depository Natural History Museum, Geneva).

Clavicornaltica is easily recognizable from other flea beetle genera, most of all by its clavate antenna (Figs. 1–4), a feature that it shares only with the Caribbean endemic genus Normaltica Konstantinov. The antenna of Clavicornaltica differs from that of Normaltica by the antennomere 4 being the shortest. In Normaltica, antennomere 5 is shorter than 4. Among other diagnostic features are: body small, round and convex in lateral view (Figs. 4–8); head flat in lateral view with wide frontal ridge, lacking supracallinal sulci (Fig. 2); with well developed grooves to receive basal antennomeres (Figs. 2–4); frons very broad; orbit wide (Fig. 2); last 4 antennomeres bearing many long setae, appearing velvety; antennomere 2 as wide (or wider) basally as apically (Fig. 3); eyes ovate, with relatively large, bulging ommatidia; maxillary palpi large, fusiform (Figs. 2, 4); pronotum wider than long, but longest at midline; anterolateral callosity of pronotum extremely long, so that setiferous pore situated well behind middle of lateral margin (Fig. 4); elytra brown, shiny, without calli; scutellum triangular, small, impunctate; metasternum projecting anteriorly between mesocoxae, completely covering mesosternum ventrally (Figs. 9–10); remnants of mesosternum positioned vertically relative to entire beetle body; femora dorsoventrally flat with groove to receive tibiae (Figs. 11–12); all tibiae channeled dorsally; third metatarsomere very narrow, with fourth situated at its base; metatibial spur long; abdominal sternite 1 narrow near middle, adjacent to intercoxal process and much wider laterally near margin, with longitudinal ridge widening anteriorly (Fig. 21); apical abdominal tergum with wide median groove (Figs. 26, 29), having row of setae in middle; male genitalia abruptly curved in lateral view with long basal part (except C. rileyi); female genitalia (Figs.19 –33) composed of full set of structures including tergite IX (Figs. 20, 22, 24); spermatheca with pump and receptacle forming angle, but not separated from each other by distinct border (Figs. 19, 23, 27); tignum narrow and long, without sclerotization posteriorly (Fig. 24, 31); vaginal palpi (Figs. 20, 24, 28) fused basally (their shape and degree of separation vary from species to species).