Willisus gertschi Roth 1981

Willisus gertschi Roth, 1981 Willisus gertschi Roth, 1981: 103, figs 1–8 (♂ ♀). Willisus gertschi: Roth 1982: 7–8, figs 1, 7 (♂ ♀); Roth 1985: B 1–6, figs 1, 7 (♂ ♀); Roth 1994: 53, figs 1, 7 (♂ ♀). LSID. [urn:lsid:nmbe.ch:spidersp:022044]. Additional material. California, San Bernardino Co. • ♂; San Bernardino Mountains, Hwy 38, crossing of tributary of East Fork Mountain Home Creek, 34.12, - 116.98; 9 September 2023; coll. M. Hedin; MCH 23_048; SDSU_G 4110. Variation. We have not seen type specimens of W. gertschi, but descriptions and illustrations of the holotype male (Roth 1981) mostly match characters seen in the San Bernardino Mtns male specimen, including the globular conductor and robustness of the dorsal tegular process. The San Bernardino Mtns male embolus appears less sinuate than holotype illustrations (Roth 1981: figs 4, 5). Comments. Previously known only from the type locality in the San Gabriel Mountains of southern California (Mt. Baldy, Manker Flats Campground; Roth 1981). Our new records from the San Bernardino Mountains extend the distribution of this species eastward in the Los Angeles Basin. We conservatively treat these populations as conspecific until additional collections can be made. We also urge additional collecting at high elevations in neighboring mountain ranges (e. g., San Jacinto Mountains, Santa Rosa Mountains) to perhaps uncover additional records of this rare genus.