Otostigmus tidius Chamberlin, 1914

Type locality. Manaus, state of Amazonas.

Brazilian published records. None.

New records. Tocantins. Lagoa das Confusões, 08.vi.2007, A. Chagas, A. Kury, A. Giupponi & A. Pérez (MNRJ 15281); Taquaruçu, Cachoeira do Anésio, 09.vi.2007, A. Chagas, A. Kury, A. Giupponi & A. Pérez (MNRJ 15277); Lajeado, Fazenda Capão Grande, 12.vi.2007, A. Chagas, A. Kury, A. Giupponi & A. Pérez (MNRJ 15286). Mato Grosso. São Domingos, 21.ix.1949, Exp. Butantan (IBSP 679). Goiás. Jandaia, Fazenda João Batista Ferreira, 04.vi.2007, A. Chagas, A. Kury, A. Giupponi & A. Pérez (MNRJ 15299). Distrito Federal. Brasília, área alfa da Marinha, ix.1999, G. Montingelli (MNRJ 15044); Brasília, 29–31.x.1999, G. Montingelli (MNRJ 15028); Brasília, ix.1999, G. Montingelli, P. Valdujo & C. Nogueira (MNRJ 15039);

Remarks. Otostigmus tidius is distributed in central and northern Brazil (Figure 41). The shape of the ultimate pair of legs, the tergites with median and lateral keels, the presence of short paramedian sutures in the anterior part of the sternites and the presence of two tarsal spurs on legs 1 to 8 put this species close to O. inermis . It also resembles O. lanceolatus and O. sulcatus in that the tibia and tarsi of the ultimate pair of legs are laterally flattened. No specimen was known from Brazil until this study and its validity was questioned by Bücherl (1943). Although the types of O. tidius have not been examined, the specimens of O. tidius available for this study agreed well with Chamberlin’s description and are here considered representative of this species.