Clubiona cultrata, Dankittipakul & Singtripop, 2014

Dankittipakul, Pakawin & Singtripop, Tippawan, 2014, A new species-group of Clubiona Latreille, 1804 and descriptions of four new species from Borneo (Araneae, Clubionidae), Journal of Natural History (J. Nat. Hist.) 48 (31 - 32), pp. 1923-1936 : 1935-1936

Clubiona cultrata sp. nov.

( Figures 1C , 5D–F )

Diagnosis

The male of C. cultrata sp. nov. is almost identical to that of C. cylindriformis sp. nov. but can be distinguished by the conical embolic base (cylindrical base in C. cylindriformis sp. nov.); the blade-shaped embolus is longer, and the conductor is situated on a more prominent elevation (broad lamina in C. cylindriformis sp. nov.). Both species have a convex carapace and their PME are widely separated.

Type material

Holotype. ♂, Indonesia, Borneo, East Kalimantan Province, Berua District, near Kampung Suaran , c. 40 km south of Tanjungredeb (1°59 ′ 42 ″ S, 117°36 ′ 03 ″ E), 50 m, primary forest on limestone, 1 October 2008, P.J. Schwendinger leg. (MHNG, IND-08/11).

Etymology

The specific epithet is derived from Latin (cultratus = blade-like), referring to the shape of the embolus.

Description

Male (holotype). Total length 6.0; prosoma 3.0 long, 2.8 wide; opisthosoma 3.0 long, 2.6 wide. Prosoma ovoid, strongly convex, in profile highest just in front longitudinal fovea; integument smooth; carapace orange uniform yellow; chelicerae brown, with three promarginal and three retromarginal teeth; labium and gnathocoxae pale brown; sternum yellow. Eye sizes and interdistances: AME 0.10, ALE 0.12, PME 0.20, PLE 0.18, AME–AME 0.10, AME–ALE 0.10, PME–PME 0.42, PME–PLE 0.30; MOQ: 0.30 long, 0.30 anterior width, 0.82 posterior width. Legs uniform pale yellow; scopulae on tarsi and metatarsi I–II distinct, in III–IV sparse. Leg formula 4213. Leg measurements: leg I 5.4 (1.4, 0.8, 1.6, 1.0, 0.6); leg II 6.8 (2.0, 0.8, 2.2, 1.2, 0.6); leg III 5.6 (1.2, 1.4, 1.2, 1.2, 0.6); leg IV 8.4 (2.4, 0.8, 2.0, 2.4, 0.8). Opisthosoma cylindrical, pale, without colour marking; dorsal scutum absent.

Palp ( Figures 1C , 5D–F ). Palpal tibia laterally compressed, with sclerotized, triangular VTA on ventro-prolateral surface; RTA heavily sclerotized, petal-shaped in ventral view, more or less rectangular with rounded apical apex in retrolateral view; cymbium with triangular tubercle situated basally, apex blunt; tegulum oblong, apical region weakly sclerotized; conductor represented by digitiform lamina, originating apico-retrolaterally on elevated mound; sperm duct U-shaped; embolic base conical, situated apico-prolaterally, clearly elevated from tegulum; embolus blade-like, dorsoventrally flattened, apex bluntly pointed, obliquely directed ectad.

Female. Unknown.

Natural history

Type specimen of C. cultrata sp. nov. was collected by sifting decomposing leaf and organic litter in lowland primary forest at the foot of limestone hill.

Distribution

Known only from the type locality (Kalimantan, Borneo ) .

Figures

Figure 1. Male palp, ventral view (A–E), prolateral view (F), dorsal view (G). Clubiona apiculata sp. nov. (A,F,G). Clubiona cylindriformis sp. nov. (B). Clubiona cultrata sp. nov. (C). Clubiona conica sp. nov. (D). Clubiona cf. hystrix (E).

Figure 5. Clubiona cylindriformis sp. nov.; male holotype (A–C). Clubiona cultrata sp. nov.; male holotype (D–F). Male palp: (A,D) ventral view; (B,E) prolateral view; (C,F) retrolateral view. Scale bars: 0.1 mm.