Oskoron crawfordi Shear, new species Figs. 154–163 Types. Male holotype, male and two female paratypes from Holder Creek Valley, 47.467°N, 121.954°W, 1375– 1400 ’ asl, King Co., Washington, taken from 12 overwinter pitfall traps (129d), 12 December 1996 to 20 April 1997, collected by James Bergdahl. All types deposited in UWBM. Diagnosis. Oskoron crawfordi resembles O. brevichelis, but differs from that species in many respects, being larger overall, with much longer, spinier chelicerae in comparison to body length, having much smaller seta-tipped tubercles on the ocularium, having the metapeltidium unsclerotized and with a row of setae (rather than two setae as in brevichelis), having more setae on the abdomen (both dorsal and ventral), and with shorter legs in proportion to body length. Etymology. The species name honors Rod Crawford, curator at the Burke Memorial Museum, Seattle, Washington, who maintains one of the premier collections of terrestrial arthropods from the Pacific Northwest. Description. Male holotype. Total length, 3.00 mm. Carapace medium to dark brown to black; anterior, posterior, anteriolateral borders well-defined; central region strongly domed; midline sulcus extends from anterior margin to ocularium; three indistinct dark “hash marks” on either side of ocularium; large slit sense organs anterior to ocularium distinct. Ocularium somewhat longer than wide, rounded, with five small setae on tubercles in single row above each eye; eyes large, black, ringed with black pigment. Metapelitidium not sclerotized, with single row of four setae at posterior margin; sensory cone brown, acute, set in small embayment in posterior edge of carapace. Abdomen soft, white, with scutum parvum, margins of scutum indistinct, irregular, scutum with widely scattered small black setae on low humps (Fig. 160). Ventrally, coxae tan, unspotted. Palpal coxae with stout setae on distinct tubercles, first leg coxae with strong, black setae on tubercles; setae on coxae two, three and four not on tubercles. Leg coxae two ...