Amphithasus Bates, 1871

Erwin, Terry L. & Zamorano, Laura S., 2014, A synopsis of the tribe Lachnophorini, with a new genus of Neotropical distribution and a revision of the Neotropical genus Asklepia Liebke, 1938 (Insecta, Coleoptera, Carabidae), ZooKeys 430, pp. 1-108 : 10

Amphithasus Bates, 1871 Double white-horned beetles Fig. 4

Amphithasus Bates, 1871:32

Amphitasus Bates: Erwin (1991), Lorenz (1998a), Ball and Bousquet (2000), Bousquet (2012).

Type species.

Amphithasus truncatus Bates, 1871:32

Way of life.

Size range - 3.5 mm to 6.0 mm; adults of this genus are found singly at night on wet leaf litter at the margins of swamps and medium-sized rivers, and on dry trails in primary rainforest.

Distribution.

Brazil, Colombia, Ecuador, Perú.

Notes.

Currently, two described species are assigned to this genus, however, there are five species represented in the NMNH collection. There is a need for a taxonomic revision of the group. Anchomenus elegans Dejean, 1831:725, was placed in " Amphithasus " by Lorenz (1998a), but we question his generic placement. Recourse to the type in Paris will solve the problem.

References.

Erwin (1991); Ball and Bousquet (2000); Bousquet (2012).

Figures

Figure 3 - 6. 3 Aeolodermus emarginatus Chaudoir. Digital Photo-illustration. Habitus, dorsal aspect, based on specimen ADP 133799 from Mabatobato, Luzon, Philippines 4 Amphithasus sp. Digital Photo-illustration. Habitus, dorsal aspect, based on specimen ADP 023719 from Rio Sucusari, Peru 5 Anchonoderus apicalis Reiche. Digital Photo-illustration. Habitus, dorsal aspect, based on specimen ADP 132554 from nr. Atalaya, Peru 6 Aporesthus sp. Digital Photo-illustration. Habitus, dorsal aspect, based on specimen ADP 132542 from Tena, Ecuador.