Review of the Neotropical Ciidae (Insecta: Coleoptera) in the Cis taurus species-group

The described Neotropical species of Cis Latreille, 1796 belonging to the taurus group are revised here. We designate lectotypes for the following names: Malacocis bahiensis Pic, 1916, Macrocis bison Reitter, 1878, Macrocis diabolicus Reitter, 1878, Macrocis grandicornis Pic, 1917, Macrocis rufescens Pic, 1922, Macrocis testaceimembris Pic, 1916, Macrocis testaceus Pic, 1916 and Trichapus pubescens Friedenreich, 1881. We transfer T. pubescens to Cis and include it in the taurus species-group, synonymize Trichapus Friedenreich, 1881 with Cis and transfer T. glaber Friedenreich, 1881 to Porculus Lawrence, 1987. We include C. longipilis Pic, 1930 in the taurus group and propose Macrocis bison as a junior synonym of C. diabolicus (Reitter, 1878). We redescribe eight Neotropical species: C. bahiensis (Pic, 1916), C. diabolicus (Reitter, 1878), C. grandicornis (Pic, 1917), C. kawanabei Lopes-Andrade, 2002, C. pubescens (Friedenreich, 1881) new combination, C. rufescens (Pic, 1922), C. setifer (Gorham, 1883) and C. testaceimembris (Pic, 1916). We also provide information on their geographic distribution and host fungi. This work solves the major taxonomic problems with the described taurus group species and also provides detailed morphological information on them, including that of male abdominal terminalia, allowing accurate identification of these species.