Meioneta mingshengzhui 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 : 11-12

Meioneta mingshengzhui Barrion , Barrion- Dupo & Heong, new species [ Figure 11 A-D]

FEMALE. Holotype female, total length 1.50mm. Cephalothorax 0.60mm long, width 0.43mm, height 0.26mm.Abdomen length 0.97mm, width 0.60mm, height 0.60mm.Parataype female, total length 1.10mm to 1.60mm.

Carapace. Gray brown, 1.39x longer than wide. Cephalic approximately 0.6x width of thoracic area. AME area black. Pedipalps dark brown. Fovea distinctly Y-shaped. Chelicerae yellow, twice longer than wide, and each bears four promarginal teeth. Sternum brown except darker margins, almost as long as wide.

Eyes. PER slightly longer than AER (0.26mm: 0.23mm). Eye diameter (mm): AME (0.07)> PME (0.063)> ALE (0.06)> PLE (0.05). Clypeus height relatively broad, 1.43x diameter AME.

Legs. Uniformly yellow, femora I and II slightly sigmoid viewed ventrally and gradually swollen subbasally. Tibia II as long as metatarsus II and IV. Leg formula 1423.

Abdomen. Globose, gray with a dull white cross to transverse H-shape band dorsally and extended obliquely posterolaterally. Venter dull whitish gray except brown epigynum.

Epigynum swollen out underneath abdomen by approximately 1.28x AME diameter. Median septum flask-like, ratio of a/b =0.76, anterior width 2x PME diameter.

MALE. Unknown.

Material Examined. Holotype female (coll. no. S0 43), CHINA, Hainan Island, Panja Town, Songtao Reservoir, 0 3 April 2011, AT Barrion, JLA Catindig, SC Villareal; Paratypes: 2 females (coll. nos. 48 & 51), same data as holotype.

Diagnostic Features. Meioneta mingshengzhui Barrion, Barrion-Dupo & Heong , new species is similar to M. nigra Oi, 1960 but easily separated from the latter in the (1) dull white cross to transverse Hshape abdominal band,(2) tibia II as long as metatarsus II and IV, and (3) the widely truncate central division of the epigynum.

Etymology. Patronym, after Dr. Zhu Mingsheng in recognition of his systematic works on the Theridiidae of China.

Figures

Figure 11 A-D. Meioneta mingshengzhui Barrion, Barrion-Dupo & Heong, new species, holotype female (A), lateral view of abdomen showing bulbous epigynum (B), PME and the lateral eyes [ALE & PLE] (C) and ventral epigynum (D).