Spilosynema mancum, Tang & Li, 2010

Tang, Guo & Li, Shuqiang, 2010, Crab spiders from Xishuangbanna, Yunnan Province, China (Araneae, Thomisidae) 2703, Zootaxa 2703, pp. 1-105 : 74-76

Spilosynema mancum sp. nov.

Figs 55–57

Type material. Holotype: 1 ♂, CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town , Menglun Nature Reserve , Lvshilin Forest Park , Limestone tropical seasonal rain forest (N21º54.705', E101º16.898', 656 m), 13 November 2009, leg. G. Tang and Z.Y. Yao (Tang-Yao_No.4).

Paratypes: CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve , leg. G. Tang and Z.Y. Yao: 1 ♀, same data as holotype ; 2 ♀, Lvshilin Forest Park, Limestone tropical seasonal rain forest (N21º54.710', E101º16.941', 652 m), 16 November 2009 ( Tang-Yao _ No. 10) ; 1 ♀, G213 roadside, Bamboo plantations (N21º54.380', E101º16.815', 620 m), 21 November 2009 (Tang-Yao _ No. 17) ; 1 ♀, G213 roadside, Bamboo plantation (N21º54.386', E101º16.803', 627 m), 22 November 2009 (Tang-Yao _ No. 18) ; 1 ♂, G213 roadside, Bamboo plantation (N21º54.380', E101º16.815', 627 m), 22 November 2009 (Tang-Yao _ No. 19) ; 1 ♀, Garbage dump, Secondary tropical forest (N21º54.380', E101º16.815', 627 m), 23 November 2009 ( Tang-Yao _ No. 20) ; 2 ♂, 8 ♀, same data as Tang-Yao _ No. 20 (Tang-Yao _ No. 21) .

Etymology. The specific name comes from the Latin word mancum (lacking or defective), referring to the palp without RTA, adjective.

Diagnosis. This species can be easily distinguished from other members of this genus by: palp without RTA and epigynum with a large excurved sclerotized plate.

Description. Male (holotype measured): Total length 3.50. Prosoma 1.50 long, 1.50 wide; opisthosoma 2.00 long, 1.80 wide. Dorsal shield of prosoma light yellow with a pair of gray stripes, sides gray. Eye measurements: AME 0.05, ALE 0.10, PME 0.04, PLE 0.08, AME − AME 0.18, AME − ALE 0.18, PME − PME 0.20, PME − PLE 0.28. MOA 0.34 long, front width 0.26, back width 0.30. Chelicerae yellow, gnathocoxae, labium and sternum light yellow. Legs yellow with many spines. Leg measurements: I: 7.70 (2.20, 2.70, 1.80, 1.00); II: 7.90 (2.30, 2.80, 1.80, 1.00); III: 4.00 (1.30, 1.50, 0.70, 0.50); IV: 4.40 (1.50, 1.50, 0.80, 0.60), leg formula 2143. Opisthosoma dorsally grayish yellow with black stripes and white spots. Venter light gray.

Palp ( Figs 55 B–D, 57 A–B). Palp only with VTA, VTA wide basally and beak-shaped distally; tutacular apophysis hook-shaped, curved distally; embolus filiform.

Female (one of the paratypes measured): Total length 3.10. Prosoma 1.40 long, 1.40 wide; opisthosoma 1.80 long, 1.50 wide. Dorsal shield of prosoma light brown, with a pair of gray stripes, sides gray. Eye measurements: AME 0.07, ALE 0.12, PME 0.05, PLE 0.10, AME − AME 0.16, AME − ALE 0.17, PME − PME 0.20, PME − PLE 0.30. MOA 0.36 long, front width 0.28, back width 0.30. Chelicerae, gnathocoxae, labium and sternum yellow. Legs I, II light brown, legs III, IV yellow. Leg measurements: I: 6.50 (2.00, 2.40, 1.40, 0.70); II: 6.30 (2.00, 2.20, 1.40, 0.70); III: 3.40 (1.10, 1.20, 0.60, 0.50); IV: 3.80 (1.30, 1.30, 0.70, 0.50), leg formula 1243. Opisthosoma dorsally yellow with grayish markings and white spots. Venter yellow with black markings posteriorly.

Epigynum ( Figs 56 B–C, 57 C–D). Epigynum with a large, excurved sclerotized plate; copulatory openings visible; copulatory ducts long and twisted; spermathecae oval.

Variation. Total length: ♂ 2.90–3.50 (n=6); ♀ 3.10–4.50 (n=20).

Distribution. China (Yunnan).