Cryptognathini, Gordon

F, Guillermo González, Hanley, Guy A. & Gordon, Robert D., 2019, South American Coccinellidae (Coleoptera), Part XIX: Overview of Cryptognathini and systematic revision of South American Cryptognatha Mulsant, Insecta Mundi 714 (714), pp. 1-32 : 3-4

Key to genera of Cryptognathini

1. Prosternum strongly produced anteriorly, concealing mouthparts in repose ( Fig. 117, 120 ).. 2

— Prosternum not strongly produced anteriorly, not concealing mouthparts in repose ( Fig. 123, 126 )...................................................................... 3

2. Antenna with 8 articles; anterior clypeal margin truncate or arcuate ( Fig. 118 ); elytral epipleuron weakly descending externally ( Fig. 119 ), often horizontal; lateral prosternal carina long, extended from apex of prosternal process to lateral margin of prosternum........................................................................ Calloeneis Grote

— Antenna usually with 10, sometimes 9 articles; anterior clypeal margin truncate or nearly so, anterior angle usually abrupt, curved upward ( Fig. 115, 117 ); elytral epipleuron strongly descending externally ( Fig. 116 ); lateral prosternal carina short, not extended to lateral margin of prosternum................................... Cryptognatha Mulsant

3. Elytral epipleuron strongly descending externally ( Fig. 122 ); eye slightly notched by expanded clypeus ( Fig. 121 ); clypeus recurved ( Fig. 123 )..................... Pentilia Mulsant

— Elytral epipleuron nearly horizontal, not strongly descending externally ( Fig. 125 ); eye nearly completely divided by expanded clypeus ( Fig. 124, 126 ); clypeus flat, not recurved .............. ................................................................................................................. Curticornis Gordon

Figures

Figures 113–120. Cryptognathini genera. 113–114) Cryptognatha aethiops. 113) Habitus dorsal. 114) Ventral surface. 115–117) Cryptognatha. 115) Frons. 116) Epipleuron. 117) Prosternum. 118–120) Calloeneis. 118) Frons. 119) Epipleuron. 120) Prosternum.

Figures 121–126. Cryptognathini genera.121–123) Pentilia. 121) Frons. 122) Epipleuron. 123) Prosternum. 124–126) Curticornis. 124) Frons. 125) Epipleuron. 126) Prosternum.