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Key to the species of TexellaMales1. POP absent (Figs. 1, 3, 104) 2POP present (Figs. 2, 50, 64, 92, 132, 133) 102. Trochanter IV with ventral spur longer than trochanter (Figs. 24, 37). Distribution California 3Trochanter IV with spur (or tubercles) shorter than trochanter (Figs. 11, 192)or absent (Fig. 104). Distribution California and Texas 53. Glans with well developed PSL2; S subequal to PSL (Figs. 27, 39). Cavernicole 4Glans with tiny PSL2. S distinctly longer than PSL (Fig. 45). Epigeandeserticola n. sp.4. PSL2 robust; VPP wide (Fig. 27). Palpal tibia with three mesal megaspines.Scute with 4-8 pairs of AT (Fig. 22)PSL2 slender; VPP narrow (Fig. 39). Palpal tibia with two mesal megaspines.Scute with 2-3 pairs of AT (Fig. 34)kokoweefn. sp.shoshone n. sp.5. Eyes well developed. TC = 3-5-4-5 or 3-5-5-5. LII/SL = 2.5-2.9 (rarely to3.3). Epigean (rarely troglophilic) 6Eyes absent, lacking retinae and corneae. TC higher. LII/SL = 9.9-15.3.Cavernicole (troglobitic) 96. Trochanter IV with 1-3 ventral tubercles (Fig. 11). Glans with 2 pairs ofPSL (Fig. 15).SA absent (Fig. 14). Distribution NW California and SW Oregonbifurcata (Briggs)Trochanter IV with short, ventral spur (Fig. 192). Glans with 1 pair PSL. SA present.Distribution central Texas 77. TC = 3-5-5-5. Both PSL and SA attenuated (Fig. 187) .fendi n. sp.TC = 3-5-4-5. SA and sometimes PSL not attenuated 88. BK present, bilobed; PSL hooked (Figs. 113-117) bi/obata n. sp.BK absent; PSL attenuated (Figs. 198-201)homi n. sp.9. Trochanter IV lacking spur or tubercle (Fig. 104). Tarsus I with fourtarsomeresTrochanter IV with tiny ventral spur. Tarsus I with three tarsomeresmulaiki Goodnight and Goodnighthardeni n. sp.10. Eyes well developed 11Eyes reduced, lacking at least retinae 1.911. TC = 3-5-4-5. S shorter than PSL (Figs. 74-76) 12TC = 3-5-5-5 or 3-5-5-6. S longer than PSL 1312. PSL short, claw-shaped (Figs. 67, 74). Scute with 3-6 pairs of AT (Figs. 60-62).EpigeanPSL long, spiraled (Figs. 52-55, 76). Scute with 7-8 pairs of AT (Fig. 48).Cavernicolejungi n. sp.brevistyla n. sp.13. S compressed (Figs. 77, 78). Distribution Eddy County, New Mexico, andCulberson County, Texaslongistyla n. sp.S spatulate apically (Figs. 121, 164, 168, 176, 180). Distribution central Texas 14172