Andraegoidus fabricii (Dupont, 1838)

Type locality. Brazil merid. (MNHN). Distribution. Brazil (Goiás, Mato Grosso, Mato Grosso do Sul, Maranhão, Rio Grande do Norte, Paraíba, Ceará, Bahia, Espírito Santo), Bolivia (Santa Cruz) .

Trachyderes fabricii Dupont, 1838: 1, pl. 186, fig. 1 (MNHN).

Andraegoidus rufipes fabricii; Huedepohl, 1985: 57.

Andraegoidus fabricii; Botero & Monné, M.L., 2012: 39, figs. 157–184, 228.

Trachyderes fulvipennis Dupont, 1838: 9, pl. 190, fig. 2. (MNHN).

Chydarteres formosus Galileo & Martins, 2010: 35, fig. 7, syn. nov.

The original descriptions of Andraegoidus fabricii and Chydarteres formosus are very similar, with only a few differences related to the highly variable coloration. The four apical antennomeres vary from white or red to almost black or brownish; also the red and black color of the elytra is very changeable, from brownish to red and black to completely red. Comparison of a photograph of the holotype of Andraegoidus fabricii and the holotype of Chydarteres formosus, deposited in UEFS, and the comparative examination of 48 specimens helped us to determine that the differences between these taxa are due to intraspecific variation.

Specimens examined. Brazil, Rio Grande do Norte: Natal, 2 males, VI.1952, M. Alvarenga col. Seridó, female, IV.1959, F.A. Nascimento col. Paraíba: Soledade, Juazeirinho, 14 males, 5 females, IV.1956, F. Assis Silva col. Pernambuco: Mun . Gravatá, Serra das Russas, BR 232, km 75, male, female, 25.IV.1991, C.S. Carbonell col. Alagoas: Pedra, 4 males, 4 females, 1940. Bahia: Cândido Sales, 2 males, XI.1972, Seabra & Roppa col. Mun. Encruzilhada, Motel da Divisa, Estrada Rio-Bahia, km 965, 960 m , 3 males, female, XI.1972, Seabra & Roppa col. Pilão Arcado, Barra do Brejo, female, 02.XI.2005, Oliveira & P. Rebouças col. (holotype of Chydarteres formosus, UEFS). Rio das Contas, female, XII.1976, O. Roppa col. Mato Grosso: Cuiabá, male, 10.XI.1995, Seilmar Caldeira col., female, 07.XI.1970, L. Bruning col. Mato Grosso do Sul: Miranda, female, X.1942, H. Zellibor col. Goiás: Mineiros, male, X.1994, P. Magno & O. Roppa col. Rio Verde, male, 10.XII.1945, H. Zellibor col., male, X.1964, A. Maller col. São Paulo: Presidente Epitácio, 2 males, 10.II.1937, H. Zellibor col. (all in MNRJ).