Leiodini

Key to Genera of Leiodini of Latin America (modified from Peck et al., 1998a)

1a Mesosternum between mesocoxae oblique (but may bear angulate keel with vertical anterior edge) (the “ Leiodes genus group”)............................................................................................. 2

1b Mesosternum between mesocoxae nearly or quite vertical (the “ Cyrtusa genus group”).............................. 3

2a Mesosternum between mesocoxae carinate or with elevated keel which may be angulate in lateral view; sides of pronotum and elytra not ciliate................................................................................. Leiodes

2b Mesosternum between mesocoxae not carinate or keeled; sides of pronotum and elytra fringed with long hairs; Chile........................................................................ Undescribed Genus of Newton and Leschen

3a Antenna of 11 segments with 3-segmented or interrupted 5-segmented club, segment 8 small and disc-shaped............ 4

3b Antenna apparently of 10 segments, with compact 3- or 4-segmented club........................................ 8

4a Antenna with 3-segmented club.................................................................. Incacyrtusa

4b Antenna with interrupted 5-segmented club................................................................. 5

5a Elytral stria 3 abruptly displaced laterally about 1/3 from base of elytron, striae 4 and 5 displaced to lesser extent; southern South America only........................................................................... Ovocyrtusa

5b Elytral striae more or less straight; widespread.............................................................. 6

6a Mesosternum between mesocoxae not carinate or keeled; mandibles edentate or with small tooth on left mandible only................................................................................................. Lionothus

6b Mesosternum between mesocoxae carinate or keeled; both mandibles or right mandible only with large tooth on inner edge.................................................................................................... 7

7a Mesosternum between mesocoxae rounded in ventral view, with fine median carina; each mandible with a tooth near middle of inner edge..................................................................................... Anogdus

7b Mesosternum between mesocoxae triangular in ventral view, with sharp vertical keel; right mandible with subapical tooth, left mandible edentate; widespread................................................... Undescribed Genus of Newton

8a Antenna actually of 11 segments, segment 8 minute and not visible in dried specimens; tibiae relatively slender.......... 9

8b Antenna truly of 10 segments; tibiae broad and shovel-like; metatibia with spines on external edge.................... 10

9a Right mandible with blunt tooth on anterior third....................................................... Cyrtusa

9b Right mandible with large triangular tooth at middle.............................................. Pseudolionothus

10a Antenna with 3-segmented club................................................................... Isoplastus

10b Antenna with 4-segmented club......................................................................... 11

11a Mesotibiae with strong spines on outer margin; metatibiae broad, with strong spines on outer margin; right mandible without tooth....................................................................................... Zeadolopus

11b Mesotibiae without large spines on outer margin; metatibiae slender, without strong spines on outer margin; right mandible toothed................................................................................... Parvocyrtusa