Key to species of Oskoron 1a. Chelicerae shorter than or only slightly longer than body; metapeltidium with two setae; Oregon, Washington. brevichelis n. sp . 1b. Chelicerae distinctly longer than body; metapeltidium with single row of four to eight (ten) setae. 2. 2a. Ocularium armed with very prominent curved, black setae on acute tubercles; metapeltidium with row of at least eight setae; penis of male distally expanded; California. spinosus (Banks). 2b. Ocularium with few setae on low tubercles, metapeltidium with six or fewer setae; penis of male not distally expanded; Washington. crawfordi n. sp. ; Published as part of Shear, William A. & Warfel, Joseph G., 2016, The harvestman genus Taracus Simon 1879, and the new genus Oskoron (Opiliones: Ischyropsalidoidea: Taracidae), pp. 1-71 in Zootaxa 4180 (1) on page 58, DOI:10.11646/zootaxa.4180.1.1, http://zenodo.org/record/164222