Sanmenia nigra, Tang, Griswold & Peng, 2009

Tang, Guo, Yin, Changmin, Peng, Xianjin & Griswold, Charles, 2009, Six Crab Spiders Of The Subfamily Stephanopinae From Southeast Asia (Araneae: Thomisidae), Raffles Bulletin of Zoology 57 (1), pp. 39-50 : 44-47

Sanmenia nigra, Tang, Griswold & Peng , new species

( Figs. 5 A–E, 7)

Material examined. – Holotype – female (CaAS9019310), 4.36 km 142° east-south-east of Popamyo (20°33'N 95°08'E), 2,050 m, deciduous forest, Mt. Popa Wildlife Reservation , Mandalay Division, Myanmar, coll. C. Griswold, 26 Sep.2003.

Diagnosis. – This new species can be separated from S. tengchong, Tang, Griswold & Yin , new species by: carapace

with pars cephalica all black (with small sparse brown stripes in S. tengchong ); the epigyne without lateral hoods (with a pair of lateral hoods in S. tengchong ); the spermathecae elongate oval (curved in n-shaped in S. tengchong ).

Description. – Female. Holotype total length 3.88. Carapace 1.80 long, 1.66 wide; abdomen 2.02 long, 2.00 wide. Carapace light brown with black margin, pars cephalica all black. Cervical grooves, radial grooves and fovea indistinct. Eye area with some long stick-like hairs. Tubercles of ALE and PLE continuous. Eye sizes and interdistances: ALE 0.13, PLE 0.12, PME 0.11, AME 0.03; AME-AME 0.07, AME-ALE 0.08, PME-PME 0.11, PME-PLE 0.12, MOA 0.21 long, front width 0.24, back width 0.29. Sternum light yellow. Chelicerae, gnathocoxae, labium yellow; chelicerae with scopulae on both margins of fang furrows; 3 promarginal and 3 retromarginal teeth ( Fig. 5c ). Legs yellow with many spines, legs I, II darker. Femora I with 5 prolateral spines and 1 dorsal short one. Tibiae I, II with 2 dorsal spines, 3 prolateral ones and 5 pairs of long ventral ones; metatarsi I, II with 2 prolateral spines and 4 pairs of long ventral ones. Left legs I, II lost, right leg measurements: I 5.20 (1.50, 2.20, 1.00, 0.50), II 6.20 (2.00, 2.60, 1.10, 0.50), III 3.40 (1.20, 1.20, 0.60, 0.40), IV 4.20 (1.50, 1.50, 0.70, 0.50); formula 2, 1, 4, 3. Abdomen near oval, dorsum light yellow with large black markings. Its sides with black markings; venter light yellow. Epigyne with a median depressed atrium; copulatory ducts short; spermathecae elongate oval.

Male. Unknown.

Etymology. – The specific name refers to the large black markings on carapace and abdominal dorsum.

Distribution. – Myanmar.

Remarks. – Thorell published a descriptive catalogue of 31 species of thomisids in 20 genera including 12 new species from Burma ( Myanmar) without figures ( Thorell, 1895). Up to now, 4 genera recorded by Thorell from Myanmar were synonymized, but no species recorded by Thorell was transferred to the genus Sanmenia .

Figures

Fig. 5. Sanmenia nigra, Tang, Griswold & Peng, new species: A. habitus of female; B, D, epigyne; C, chelicera; E, vulva. Scale bars: A = 1.0 mm, B–E = 0.1 mm.