Steatoda panja Barrion, Barrion-Dupo & Heong

Alberto T. Barrion, Aimee Lynn A. Barrion-Dupo, Josie Lynn A. Catindig, Sylvia C. Villareal, Ducheng Cai, Qianhua Yuan & Kong Luen Heong, 2016, NEW SPECIES OF SPIDERS (ARANEAE) FROM HAINAN ISLAND, CHINA, UPLB Museum Publications in Natural History 3, pp. 1-103 : 39-40

Steatoda panja Barrion, Barrion-Dupo & Heong , new species [ Figure 45 A-E]

MALE. Holotype male, total length 4.20 mm.

Cephalothorax length 2.00 mm, width 1.40 Abdomen length 2.20 mm, width 1.10 mm.

mm.

Carapace. Black, rough with lateral margins weakly serrate, fovea distinctly convex and deep, 1.43x longer than wide. Chelicerae black, 2.3x longer than wide, promargin with bidentate tooth.

Eyes. AE row shorter than PE row (0.57: 0.61 mm) Eye diameter (mm): PME (0.14)> AME=ALE (0.12)> PLE (0.11), separation (mm): AME-AME (0.4), AME-ALE (0.03), PME-PME (0.06), PME- PLE (0.07). Clypeus height wide, 2.36x PME diameter.

Legs. Uniformly brownish red with no strong spines on all legs. Coxa I strongly developed, cylindrical and 1.64x longer than wide. Tibia I, metatarsus I and femur II subequal in length. Leg formula 1423.

Abdomen. Oblong, anterior end with a neck-like process cleft midapically, slightly elevated anterior end with a circular white narrow band interrupted medially, dorsal plate bears four pairs of brownish black sigilla.

Palpal organ with a distinctly sinuate embolar tip and a long thin white lateral process expanded apically. Cymbium acute to slightly pointed at tip.

FEMALE. Unknown.

Material Examined. Holotype male (coll. No. SO 31), CHINA, Hainan Island, Panja , Songtao Reservoir, 0 3 April 2011, AT Barrion, JLA Catindig and SC Villareal.

Diagnostic Features. This new species is similar to Steatoda grossa (C.L. Koch, 1838) , in New Species of Spiders ( Araneae ) from Hainan Island, China possessing eight sigilla and a long and apically rounded lateral process nearly reaching tip of cymbium. It differs from the named species by having (1) prominently sinuate embolar process and acute apex of the cymbium, (2) femur II as long as tibia I and femur III as long as tibia IV, and (3) tibia II as long as metatarsus II.

Etymology. Named after type locality.

Figures

Figure 45 A-E. Steatoda panja Barrion, Barrion-Dupo & Heong, new species, holotype male (A), chelicerae (B), pedipalp (C) and palpal organ (D, E).