Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species Author Cokendolpher, James C. Author Peck, Robert W. Author Niwa, Christine G. text Zootaxa 2005 1058 1 34 journal article 10.5281/zenodo.170130 5e41b9de-0ab2-4935-a46e-4d6373e017e8 1175­5326 170130 Antrodiaetus occultus Coyle Figs. 3 , 31 , 47 Antrodiaetus occultus Coyle 1971 :353 –354, figs. 123, 178, 204–206, 248–249; Platnick 2005 . Material Examined. Oregon: Lane County: Eugene, 2 males (determined by Coyle, 1969) ( AMNH ); H. J. Andrews Experimental Forest, 5 males (JMC). Diagnosis. This species is the only member of the genus which has the tibia I prolateral macrosetae reaching the distal end of the segment on males ( Fig. 47 ). Abbreviated Description. All three dorsal opisthosomal sclerotized patches separate; male genital plate with sclerotized parts divided, straight to recurved ( Fig. 31 ); chelicera without distodorsal projection, without setae on upper ectal surface; with prolateral brush of macrosetae on tibia I ( Fig. 47 ) which reach distal end of segment, 37–74% of macrosetae ensiform; tibia I with 2–9 macrosetae retrolaterally, without large heavy macrosetae ventrally; tibia and metatarsus I not swollen in lateral view; metatarsus I sinuous, without macrosetae ventrally; tip of palpal outer conductor sclerite not closely appressed to inner conductor sclerite; palpal tibia 2.11–2.25 times longer than wide; males active above ground from late September to early November. Distribution. Western Oregon between the coast and the Cascade Mountain range ( Fig. 3 ; Coyle 1971 : Map 2). Comments. Examination of voucher material from the study of McIver et al. (1992) revealed the presence of two species: individuals from old growth stands (JMC) are A. occultus and small, yellowish colored specimens (OSAC) from a clearcut stand ( 3 males ) are possibly an undescribed species.