Cyrtusa Erichson, 1842

Peck, Stewart B. & Cook, Joyce, 2013, Systematics and distributions of the genera Cyrtusa Erichson, Ecarinosphaerula Hatch, Isoplastus Horn, Liocyrtusa Daffner, Lionothus Brown, and Zeadolopus Broun of the United States and Canada (Coleoptera: Leiodidae: Leiodinae: Leiodini), Insecta Mundi 2013 (310), pp. 1-32 : 4

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).