Orcevia calcicola Yu, Maddison & Zhang, sp. nov. (岩栖ĸ尔¤)

Figs 45–65

Type material. Holotype: ♂ (UBCZ; KYU-SAL733), MALAYSIA: Sarawak, Mulu Nat. Pk., Lagang Trail, 4.0478– 4.0488°N, 114.8246– 114.8240°E, 60 m elev., 12 March 2012, leg. W.P. Maddison & E.K. Piascik, WPM #12-018; Paratype: 1♀ (UBCZ; KYU-SAL732), same data as holotype .

Etymology. The specific epithet is Latin, meaning “living on limestone”, corresponding to the habitat where this species was collected; adjective.

Diagnosis. It resembles O. yahaha sp. nov. in the presence of many small denticles on tip of embolus (Fig. 56), but can be distinguished by the short and scoop-like embolus, suddenly narrowed tip of RTA, and the top edge of salticid radix lower than embolic disc (Figs 53–55; vs. embolus is long and baffy-like, RTA is gradually narrowed towards tip, and the top edge of SR is obviously higher than the embolic disc in O. yahaha sp. nov.).

Description. Male. Habitus as shown in Fig. 51. Measurements of holotype: carapace length 1.63; abdomen length 1.20; measurements of eyes: AME 0.38, ALE 0.26, PME 0.04, PLE 0.22; measurements of legs: I 3.46 (1.04, 0.68, 0.78, 0.57, 0.39), II 2.44 (0.77, 0.48, 0.47, 0.39, 0.35), III 2.73 (0.86, 0.38, 0.51, 0.50, 0.48), IV 2.74 (0.85, 0.38, 0.58, 0.55, 0.38); leg formula 1432. Carapace, palps, and legs I–II rather dark, with very few light-colored setae; dorsal abdomen covered with sparse karki setae; legs III–IV with slightly light-colored annuli.

Palp (Figs 53–55): embolus small and short, with many small protrusions on ventral surface; embolus distally widened in lateral view; embolic disc kidney-shaped (Fig. 53); lobe-like protrusion of tegulum well developed; tegular lobe well defined from tegulum, with prolateral and retrolateral constrictions close to tegulum; RTA thin, lamina-like, tip suddenly narrowed; ventral femoral bump small hook-like (Fig. 55).

Female. Habitus as shown in Fig. 52. Measurements of paratype: carapace length 1.42; abdomen length 1.33; measurements of eyes: AME 0.36, ALE 0.24, PME 0.06, PLE 0.21; measurements of legs: I 2.31 (0.74, 0.41, 0.50, 0.35, 0.31), II 2.10 (0.67, 0.36, 0.41, 0.36, 0.30), III 2.45 (0.80, 0.34, 0.45, 0.48, 0.38), IV 2.63 (0.80, 0.35, 0.53, 0.57, 0.38); leg formula 4312. Body dark, yellow setae on dorsal body relatively sparse (Fig. 48), legs light-colored, melanic area not obvious.

Epigynum (Fig. 58): atria almost fused, close to genital furrow. Vulva (Fig. 59): accessory glands small, hidden behind spermathecae in dorsal view; spermathecae far from each other, copulatory ducts indistinct, fertilization ducts attached on small mound on spermathecae.

Distribution. Known only from the type locality of Malaysia (Sarawak).