Cybaeus (Araneae: Cybaeidae): the aspenicolens species group of the Californian clade Author Bennett, Robb 0000-0002-6587-7079 ennett@shaw.ca Author Copley, Claudia 0000-0002-8184-5819 ccopley @ royalbcmuseum. bc. ca; https: // orcid. org / 0000 - 0002 - 8184 - 5819 ccopley@royalbcmuseum.bc.ca Author Copley, Darren 0000-0002-1944-4272 dcopley @ royalbcmuseum. bc. ca; https: // orcid. org / 0000 - 0002 - 1944 - 4272 dcopley@royalbcmuseum.bc.ca text Zootaxa 2021 2021-02-05 4926 2 224 244 journal article 8299 10.11646/zootaxa.4926.2.4 506621bb-94d9-468a-b3c2-46035b28b1a8 1175-5326 4506083 FDAE3465-979C-482F-908F-D0CF4A15000E Cybaeus thermydrinos Bennett Figs 29–31 , 33 , 38–40 , 42 Cybaeus thermydrinos Bennett in Copley et al. 2009: 385 , figs 61–66. World Spider Catalog 2020 . Type material. Holotype male . U.S.A. : California : Tulare County , 2.5 miles east of California Hot Springs , matured 5 October 1959 , W.J. Gertsch & V . D. Roth ( CAS ), examined. Other material examined. Specimens and locality data in Copley et al. (2009) . FIGURES 34–40. Cybaeus spp, females, copulatory organ (34–36 C. fraxineus spec. nov. from vicinity of Ash Mountain, California. 37 C. fraxineus spec. nov. from Clough Cave, California. 38–39 C. thermydrinos from near Johnsondale, California. 40 C. thermydrinos from California Hot Springs, California). 34, 38 epigynum, ventral; 35, 39–40 vulva, ventral; 36–37 vulva, dorsal. CD—copulatory duct, ER—epigynal ridge or hood. FIGURE 41. Distributions of Cybaeus aspenicolens (yellow diamonds), C. blasbes (blue circles), C. coylei spec. nov. (green triangle). AZ—Arizona, CA—California, ID—Idaho, OR—Oregon, NV—Nevada, UT—Utah. FIGURE 42. Distributions of Cybaeus fraxineus spec. nov. (purple circles), C. thermydrinos (white triangles). AZ—Arizona, CA—California, ID—Idaho, OR—Oregon, NV—Nevada, UT—Utah. Diagnosis. Cybaeus thermydrinos is grouped with C. fraxineus spec. nov. in the informal fraxineus subgroup. Distinguishing the aspenicolens and fraxineus subgroups is discussed in the aspenicolens species group diagnosis. Differentiating the male and female of C. thermydrinos from those of C. fraxineus spec. nov. is discussed in the diagnosis of the latter. Description. See Copley et al. (2009) . Distribution. Southern Tulare County and adjacent northern Kern County, California on the western slopes of the southern Sierra Nevada ( Fig. 42 ).