Oxyopes isangipinus 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 : 22-23

Oxyopes isangipinus Barrion, Barrion-Dupo & Heong , new species [ Figure 24 A-D]

FEMALE. Holotype female, total length 9.20 mm. Cephalothorax length 3.45 mm, width 2.60 mm. Abdomen length 5.75 mm, width 3.00 mm.

Carapace. Yellow with two typical brown submedian longitudinal bands dorsally and a median band runs from midclypeus to chelicerae, black inside eye margins, white band inside AE area, and brown in the thin and long fovea. Chelicerae each with one promarginal and retromarginal tooth. Pedipalp yellow with long brown spines. Maxillae, labium and sternum yellow. Maxillae 2.7x longer than wide, midprolateral margin concave and anterior end moderately converged. Labium 1.2x longer than wide. Anterior one-half of sternum with at least 13 long brown hairs arranged in four vertical rows.

Eyes. In four rows comprising of the small AME, the large ALE, PME and PLE. Except AME, the eyes are arranged hexagonally. Eye diameter (mm): ALE (0.29)> PME =PLE (0.26)> AME (0.14). Clypeus height wide, 2.6x ALE diameter.

Legs. Yellow with long brown spines, ventral gray bands on femora I-IV, pale black longitudinal bands on dorsum and lateral margins of tibiae, dorsum of patellae and dorsobasal one fourth of metatarsi. Tibia IV with a pair of black spots apically and 16 trichobothria in two rows along its dorsobasal one-half. Leg formula 1243.

Abdomen. Yellowish white, 1.92x longer than wide, broadest a little below midlength and tapers posteriorly. Lateral sides of posterior abdomen black. Anal tubercle and spinnerets yellowish brown. Venter color as in dorsum except for a broad brown median longitudinal band.

Epigynum simple with an oblique copulatory opening and a cleft median posterior epigynal margin. A pair of C-shaped black band lined lateral edge of copulatory opening.

MALE. Unknown.

Material Examined. Holotype female (coll. no. S0 84), CHINA, Hainan Island, Panja , Songtao reservoir, 6 April 2011, ATBarrion, JLACatindig and SCVillareal.

Diagnostic features. This new species closely resembles Oxyopes sertatus L. Koch, 1877 but separated from the latter by the (1) unidentate promarginal and retromarginal tooth of chelicerae, (2) shape of the abdomen, and (3) number of trichobothria in tibia IV.

Etymology. The specific epithet is derived

from the single tooth ("isang ipin") in Tagalog.