A redescription of Isoctenus coxalis (F.O.P. Cambridge, 1902) comb. nov. and description of I. corymbus, a new species of cave dwelling spider (Araneae, Ctenidae, Cteninae) from the state of Goiás, Brazil - Polotow, D.; Brescovit, A. D.; Pellegatti-Franco, F. (Revista Ibérica de Aracnología, 2005)