Trochoideus Westwood, 1833: 673 .

Type species: Paussus cruciatus Dalman, 1825 . Trochoides Chapuis, 1876: 147 . (error)

Pseudopaussus Schulze, 1916: 292 .

A genus with 16 species from tropical areas around the World (Strohecker 1953, 1968; Joly & Bordon 1996). In America 9 native species are known from Chiapas in México to north Argentina (Strohecker 1978; Joly & Bordon 1996). The striking modifications of antennae, mainly in male specimens, could be related to the apparent association of these beetles with ants and termites (Strohecker 1978). Trochoideus desjardinsi Guérin-Méneville distributed from Madagascar to Taiwan has been accidentally introduced to the southern United States, which probably was associated with the introdution of social insects (termites) to America (Skelley & Burguess 1995) . One species in México.

56. T. mexicanus Strohecker, 1978 . Fig. 26

Trochoideus mexicanus Strohecker, 1978: 351; Joly & Bordon 1996: 2.

México: Chiapas, San Quintín. Type material: holotype in FSCA. Distribution: México: CHIS.