Speocera (Speocera) rjacksoni Barrion, Barrion

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 : 21

22. Speocera (Speocera) rjacksoni Barrion, Barrion -Dupo & Heong, new species [ Figure 22 A-C]

FEMALE. Holotype female, total length 1.24mm. Cephalothorax length 0.57mm, width 0.45mm. Abdomen length 0.67mm, width 0.58mm.

Carapace. Yellow with a thin lyre-shape grayish brown marking in the cephalic and inverted Y -marking in the thoracic area, 1.26x longer than wide. Lateral margins brown. Chelicerae yellow, 2x longer than wide (0.20mm: 0.10mm). Pedipalp, labium and maxillae yellow. Apical margins of maxillae not converging and narrower than base. Labium broad apically, constricted basally and connected to sternum. Sternum as long as wide, yellow with gray brown mottles.

Eyes. Six eyes arranged in three pairs of two, median pair distinctly more robust than the lateral pairs (0.11mm: 0.09mm). First row of four eyes slightly procurved. Second row straight and widely separated. Eye diameter (mm): AME (0.06)> PLE (0.05)> ALE (0.04). PLE-PLE separation 2.7x AME diameter. Clypeus height slightly more than 1 AME diameter.

Legs. Uniformly yellow. Venter of tibia IV with an apical spine and a dorsal bristle subposteriorly. Femur IV medially swollen with an apicolateral spine, inner area depressed and subdorsal border lined with short hairs. Pedipalp slightly longer than femur II and as long as femur IV. Leg formula 4213.

Abdomen. Ovoid dorsally, gray and pale ventrally, subposteriorly with a transverse black band. Epigastric region with relatively long and transverse sclerotized slit.

MALE. Unknown.

Material Examined. Holotype female (coll. no. S0 77), CHINA, Hainan Island, Panja Town, Songtao Reservoir, 0 3 April 2011, AT Barrion, JLA Catindig, SC Villareal.

Diagnostic Features. This species is similar to S. pongo Deeleman-Reinhold but differs from the latter in the (1) pigmentation design in the cephalothorax, (2) color of sternum, (3) tibia IV with only two spines, (4) femur II as long as femur IV, and (5) longer pedipalps.

Etymology. Patronym, in honor of Dr. Robert R. Jackson for his untiring interest and pioneering works on the behaviour of jumping spiders.