Leiodidae

Peck, Stewart B., Gnaspini, Pedro & Newton, Alfred F., 2020, Updated catalog and generic keys of the Leiodidae (Insecta: Coleoptera) of the Neotropical region (“ Latin America ”: Mexico, the West Indies, and Central and South America), Zootaxa 4741 (1), pp. 1-114 : 10

Key to Subfamilies of Leiodidae of Latin America (modified from Newton, 1998)

1a Head with distinct occipital carina or elevated crest; widespread........................................ Cholevinae

1b Head without occipital carina or crest..................................................................... 2

2a Antennal segment 8 as large as segments 9 – 10 and bearing similar periarticular gutter and internal vesicles; cervical sclerites absent; intersegmental membranes between abdominal ventrites long, with brick-wall pattern of minute sclerites; female with 4 visible abdominal ventrites; Chile, Argentina, Mexico, Guatemala, Honduras............................ Coloninae

2b Antennal segment 8 smaller than segments 9 – 10, without periarticular gutter or internal vesicles, or antenna 10-segmented; cervical sclerites present; abdominal intersegmental membranes short and without minute sclerites; females with 5 or 6 visible abdominal ventrites................................................................................... 3

3a Pronotum semicircular with evenly rounded anterior edge, head in repose completely concealed from above; hind coxae separated by nearly a third of their width by elevated metaventral process; tarsi 3-3-3 segmented; Chile.......... Catopocerinae

3b Pronotum with straight or emarginate anterior edge, head not concealed from above; hind coxae not separated; tarsi various, 3 – 5 segmented or heteromerous.......................................................................... 4

4a Antennal insertions concealed in dorsal view; head relatively flattened and broad, usually about half or more as wide as pronotum; dorsum usually apparently glabrous (but sometimes with numerous very short hairs visible at high magnification); mesoventral-mesepisternal suture (if present) strongly curved; widespread................................. Leiodinae

4b Antennal insertions visible in dorsal view; head relatively convex and narrow, often less than half as wide as pronotum; dorsum usually clothed with long setae, rarely apparently glabrous; mesoventral-mesepisternal suture (if present) more or less straight; southern South America........................................................................ Camiarinae