Mastira serrula, Tang & Li, 2010

Tang, Guo & Li, Shuqiang, 2010, Crab spiders from Xishuangbanna, Yunnan Province, China (Araneae, Thomisidae) 2703, Zootaxa 2703, pp. 1-105 : 33-35

Mastira serrula sp. nov.

Figs 22–24

Type material. Holotype: ♂, CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town , Menglun Nature Reserve , G 213 roadside, Bamboo plantation (N21º53.646', E101º16.975', 589 m), 26 November 2009, leg. G. Tang and Z.Y. Yao (Tang-Yao_No.26).

Paratypes: CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town , Menglun Nature Reserve , leg. G. Tang and Z.Y. Yao: 1 ♂, same data as holotype ; 1 ♀, G213 roadside, Bamboo plantation (N21º54.386', E101º16.803', 627 m), 22 November 2009 (Tang-Yao _ No. 18) ; 2 ♂, 1 ♀, Anogeissus acuminate plantation (about 20 years old, N21º53.819', E101º17.075', 609 m), 27 November 2009 (Tang-Yao _ No. 28) ; 1 ♀, Lvshilin Forest Park, Limestone tropical seasonal rain forest (N21º54.555', E101º16.860', 615 m), 29 November 2009 (Tang- Yao _ No. 32) ; 1 ♂, Lvshilin Forest Park, Limestone tropical seasonal rain forest (N21º54.555', E101º16.860', 610 m), 29 November 2009 ( Tang-Yao _ No. 33) ; leg. G. Zheng: 1 ♀, secondary tropical seasonal moist forest (N21º54.390', E101º16.811', 612 m), 10 August 2007 ( Zheng _sp1366) .

Etymology. The specific name comes from the Latin word serrula (small saw), referring to the tegular apophysis small-saw-shaped, noun in apposition.

Diagnosis. This new species is similar to M. bipunctata Thorell, 1891 (see Lehtinen 2005: 169, figs 47, 58), but can be separated from this species by the small, serrate-like tegular apophysis (different shape in M. bipunctata ) and the elliptic, wide atrium (almost round in M. bipunctata ).

Description. Male (holotype measured): Total length 2.15. Prosoma length 1.05, width 1.00; opisthosoma length 1.05, width 0.95. Prosoma dorsally tent-like, dorsally light brown with short hairs. Eye tubercles grayish white. Eye measurements: AME 0.04; ALE 0.07; PME 0.04; PLE 0.05; AME–AME 0.12; AME–ALE 0.11; PME– PME 0.19; PME–PLE 0.18. MOA length 0.21 with front width 0.20 and back width 0.27. Femora I, II brown; patellae, tibiae and metatarsi of I, II blackish brown, other segments yellow. Leg measurements: I: 3.95 (1.25, 1.40, 0.75, 0.55); II: 4.00 (1.25, 1.40, 0.75, 0.60); III: 1.90 (0.60, 0.70, 0.30, 0.30); IV: 2.00 (0.70, 0.70, 0.30, 0.30). Leg formula: 2143. Opisthosoma oval, dorsally yellow, venter yellow.

Palp ( Figs 22 B–E, 24 A–B). VTA digitiform; RTA axe-shaped; bulb with a projection which serrated distally; embolus slender.

Female (one of the paratypes measured): Total length 4.00. Prosoma length 1.90, width 2.10; opisthosoma length 2.60, width 2.05. Eye measurements: AME 0.05; ALE 0.08; PME 0.05; PLE 0.06; AME–AME 0.21; AME– ALE 0.22; PME–PME 0.34; PME–PLE 0.30. MOA length 0.29 with front width 0.30 and back width 0.42. Legs yellow, tibiae of I, II with 1 short prolateral ventral spine; metatarsi of I, II with 5(prolateral)-4(retrolateral) short ventral spines. Leg measurements: I: 7.60 (2.50, 2.80, 1.40, 0.90); II: 7.70 (2.50, 2.90, 1.40, 0.90); III: 3.90 (1.30, 1.50, 0.70, 0.40); IV: 4.30 (1.40, 1.60, 0.90, 0.40). Leg formula: 2143. Opisthosoma dorsally yellowish white, venter yellow.

Epigynum ( Figs 23 B–C, 24 C–D). Epigynum with a posteriorly situated round atrium; copulatory openings with conical projections which could be the dried sperm, according to Lehtinen (2005: 169), copulatory duct twisted; spermathecae short, tube-shaped.

Variation. Total length. ♂ 1.95–2.20 (n=5), ♀ 4.00–4.60 (n=4).

Distribution. China (Yunnan).