Archerius mendocino, Levi, 1957

Levi, Herbert W., 1957, The North American spider genera Paratheridula, Tekellina, Pholcomma and Archerius (Araneae: Theridiidae), Transactions of the American Microscopical Society 76 (2), pp. 105-115 : 115

Archerius mendocino , sp. nov.

Figs. 38- 47

Female: Sclerotized parts yellow-brown to reddish brown, other parts lighter. Anterior eyes oval, about one length apart, one-half length from laterals. Posterior medians one diameter apart, one to two diameters from laterals. Anterior medians largest, posterior medians smallest. Abdomen hairy, bases of hairs with sclerotized spots which are less than one-half their diameter apart on dorsum, farther apart on venter. Rows of larger sclerotized spots on sides and posterior of dorsum and sides. A sclerotized ring around spinnerets. A sclerotized scutum covers anterior half of venter (Fig. 43). Epigynum (Fig. 40) with a shallow depression close to margin. Measurements: total length, 1.3 mm,; carapace, 0.54 mm. long, 0.45 mm. wide; first patella and tibia, 0.49 mm. long; second, 0.43 mm. long; third, 0.37 mm. long; fourth femur, 0.47 mm. long; patella and tibia, 0.49 mm. long; metatarsus, 0.26 mm. long; tarsus, 0.28 mm. long.

Male: Similar to female, dorsum of abdomen covered with a large scutum. Palpus illustrated by figures 44-47. Measurements: total length, 1.2 mm.; carapace, 0.56 mm. long, 0.49 mm. wide; first patella and tibia, 0.52 mm. long; second, 0.48 mm. long; third, 0.39 mm. long; fourth femur, 0.50 mm. long; patella and tibia, 0.52 mm. long; metatarsus, 0.27 mm. long; tarsus, 0.30 mm. long.

Type locality: Male holotype, female allotype, 17 male and 18 female paratvpes from Casper , Mendocino County, California March 7, 1954, (J. Heifer) .