Prolobodes giganteus (Burmeister)

(Figs. 14A, 15)

Cydnus giganteus Burmeister, 1835: 375 .

Lobostoma giganteus: Amyot & Serville, 1843: 88 .

Prolobodes giganteus: Amyot & Serville, 1843: 676; Lethierry & Severin, 1893: 62; Froeschner, 1960: 510. Lobostoma gigantea: Walker, 1867: 147; Stål, 1876: 18; Distant, 1880: 1. Lobostoma giganteum: Dallas, 1851: 111; Signoret, 1881: 194.

Material examined: 1 specimen, PA, Mocajuba, Mangabeira, Feb-1953, Rego col., MNRJ; 3 specimens, Óbidos, Nov-1953, Brazilino col., MNRJ; 1♂, AM, Benjamin Constant, rio Javary, alto Amazonas, 02-Sep-1942, Dirings col., MCNZ ; 6 specimens, PI, Teresina, 1953, Oliveira col., MNRJ; 1♂, TO, Palmas, Serra do Langeado. Fazenda Céu, Nov-1992, UFRG ; 1♂, MT, Alto Xingú, 01-Dec-1954, Arlé col., MNRJ; 1♀, Rio Paraná, “ Riacho do Herv. ”, Dec-1952, Dirings col., MCNZ; 1♂, DF, Brasilia, 18-Oct-1965, M. Becker col., MCNZ; 1♀, Brasilia, 20-Oct- 1965, M. Becker col., MCNZ; 1 specimen, SP, Angatuba, 1922, Marques col., MNRJ; 1♂, Barra Bonita, Oct-1977, P.M.S. Botelho col., MCNZ; 1 specimen, Barueri, 10-Dec-1955, Lenko col., MNRJ ; 1♀, Itirapina, Cerrado, 23- Nov-00, Machado col., MNRJ ; 1♀, Pradópolis, Oct-1971, P.M.S. Botelho col., MCNZ ; 1♂, São Carlos, 14-Oct- 1981, K. Zanoe col., MCNZ ; 3♂, SC, Ipumirim, Feb-1956, MCNZ ; 6♀, Itapiranga, Sep-1953, MCNZ; 1♂, RS, Barra do Ribeiro, Fazenda Boa Vista, 16-Dec-2003, Equipe Probio col., MCNZ ; 1♂, Faxinal do Soturno, 22-Oct- 1978, MCNZ ; 2♀, Porto Alegre, Museu Anchieta, 1954, MCNZ ; 1♀, Santa Maria, 16-Nov-1973, D. Link col., MCNZ; 1♀, Santa Maria, 02-Apr-1975, MCNZ .

Distribution: Brazil (PA new rec., AM new rec., PI new rec., TO new rec., MT, MG, DF new rec., SP, SC new rec., RS), Bolivia, Paraguay.

Remarks: Despite the resemblance to the genus Cyrtomenus, the species presents an expansion in the second labial segment which helps to separate morphologically both genera. That structure, according to Froeschner (1960) can brings clues about the feeding habits, but without direct observations cannot be confirmed. The differences among the three species are mainly on the disposition and number of punctures on the pronotum. First record for RS in Brazil in Link (2003).