Otostigmus casus Chamberlin, 1914

Chagas-Júnior, Amazonas, 2012, The centipede genus Otostigmus Porat in Brazil: Description of three new species from the Atlantic Forest; a summary and an identification key to the Brazilian species of this genus (Chilopoda, Scolopendromorpha, Scolopendridae, Otostigminae), Zootaxa 3280, pp. 1-28 : 23

Otostigmus casus Chamberlin, 1914

Type locality. Madeira-Mamoré R. R. camp 39, state of Mato Grosso.

Brazilian published records. None.

New records. None.

Remarks. This is one of the most problematic Brazilian Otostigmus to identify. It was described based on one specimen without the ultimate pair of legs, a body part providing diagnostic characters for many species of the genus. Besides, no other specimen of this species was collected after its description. Otostigmus casus resembles O. tidius by the presence of short paramedian sutures on the sternites, the rugosity of the dorsal integument, and presence of keels on the tergites. However, it differs from O. tidius by the presence of depressions in the sternites, absent in O. tidius , and by the two tarsal spurs on the first pair of legs, present on legs 1 to 8 in O. tidius .