Tetragnatha zhuzhenrongi 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 : 33-34

Tetragnatha zhuzhenrongi Barrion , Barrion- Dupo & Heong, new species [ Figure 37 A-F]

FEMALE. Holotype female, total length 6.70 mm. Cephalothorax length 2.90 mm, width 1.30 mm.

Abdomen length 4.00 mm, width 1.00 mm.

Carapace. Brownish yellow with a distinct V-shaped cephalic projected to the double convex or C-shaped fovea, 2.2x longer than wide. Chelicerae dark yellow, long and diverging, narrow basally and stout subapically. Promargin bears nine teeth and retromargin with 10 teeth. Pedipalps yellow and slender. Maxillae, labium and sternum all yellow, general shape as in the genus Tetragnatha .

Eyes. In two rows of four, AER longer than PER (0.80: 0.69 mm). Eye diameter (mm): AME (0.11)> PME = PLE (0.09)> ALE (0.07). Eye separation (mm): PME-PLE = AME-ALE (0.14)> AME-AME (0.13)> PME-PME (0.10). Clypeus height a little wider than one AME diameter.

Legs. Yellow except black anterior ends of metatarsi I-IV, long and slender. Tibia I the longest segment, as long as metatarsus I. Patella I as long as tibia of pedipalp. Spination in femur I 1 -0-3-4 and IV 4 -0-0-0; tibia I 1 -0-4-4 and IV 2 -0-1-0. Leg formula 1243.

Abdomen. Long and yellowish white, 4x longer than wide, curved towards posterior one-half (concave in lateral view) and posterior tip strongly rounded. Curved posterior tip of abdomen bears five vertical furrows on each lateral side. Venter dull white.

Epigynal fold tongue-like with a rounded tip, internally bears a pair of oppositely twisted process.

MALE. Unknown.

no.

Material Examined. Holotype female (coll. Ha2011 -8), CHINA, Hainan Island, Haiko, 9

April 2011,

SCVillareal.

ATBarrion,

JLACatindig

and

Diagnostic Features. Very similar to T. extensa (Linnaeus, 1758) but differs mainly from the latter in the following, (1) cheliceral dentation, (2) genital (epigynum) features, (3) leg length, and (4) shorter body length and presence of vertical grooves in the lateral sides of abdomen.

Etymology. Patronym, in recognition of Dr. Zhen Rong’s promotion of ecological engineering project in China.

Figures

Figure 37 A-F. Tetragnatha zhuzhenrongi Barrion, Barrion-Dupo & Heong, new species, eye pattern (A), chelicera showing promarginal and retromarginal teeth (B), left chelicerae and maxilla (C), posterior end of abdomen (D), ventral (E) and dorsal (F) views of genital fold.