Cyrtusa Erichson

Cyrtusa Erichson, 1842: 221 . Type species: Anisotoma subtestacea Gyllenhal, 1813: 707; by subsequent designation of Thomson 1859: 58. Daffner 1982: 209; 1983: 136; 1988: 292.

Caenocyrta Brown, 1937b: 172 . Type species: Amphicyllis picipennis LeConte, 1863, by original designation (= Cyrtusa subtestacea (Gyllenhal, 1813)) . Synonymy by Daffner 1988: 292.

Diagnosis. Body strongly convex, oval in shape. Antenna with 10 antennomeres, with 4-antennomere club. Mandibles form semicircle when closed; right mandible with blunt tooth on anterior one-third. Ventral side of head with paired antennal grooves next to eyes. Mesosternum vertical between coxae, vertical surface not carinate. All tibiae slender; protibia with distinct tarsal groove, its outer margin strongly spinose; mesotibia slightly widened and its outer margin densely spinose; metatibia with few spines on ventral surface near outer margin. Tarsal formula 5–5– 4 in both sexes. Males distinguished by expanded pro- and mesotarsi, curved mesotibiae bearing a process on the inner apical margin, and by a toothlike expansion of the lower margin of the metafemur.

Distribution. The distribution of the genus is Holarctic and it is also found in southern India; it is questionably Afrotropical and Neotropical (Newton 1998).