Walckenaeria caobangensis, Tu & Li, 2004
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publication ID |
https://doi.org/ 10.5281/zenodo.13244432 |
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persistent identifier |
https://treatment.plazi.org/id/03D387E1-526B-5E02-FF7A-FD6C874922E0 |
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treatment provided by |
Felipe |
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scientific name |
Walckenaeria caobangensis |
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Walckenaeria caobangensis , new specie s ( Fig. 9 View Fig )
Material examined. – Holotype - female, Sac Ha Village , Cao Bang Province, Vietnam (069), 17 Dec.2000.
Diagnosis. – The new species easily distinguished by its wave-shaped margin of ventral plate and S-shaped copulatory ducts.
Description of male. – Unknown.
Description of female. – Total length: 2.23. Carapace: 0.93 long, 0.67 wide. Abdomen: 1.40 long, 1.00 wide. Carapace ( Figs. 9A, B View Fig ): yellowish brown, with black margin, unmodified. Eyes with black surroundings, AME black and smaller, others subequal. AER recurved, eyes separated by AMEd; PER straight, intervals of posterior eyes shorter than PMEd; ALE and PLE juxtaposed. Chelicerae brown, fang groove with six promarginal and four retromarginal teeth ( Fig. 9C View Fig ). Leg pale yellow, lengths of legs: I 3.07 (0.90+ 1.00+ 0.70+ 0.47), II 2.80 (0.87+ 0.90+ 0.60+ 0.43), III 2.34 (0.67+ 0.67+ 0.60+ 0.40), IV 2.57 (0.87+ 1.03+ 0.70+ 0.47). Tibia spines: 2-2-1-1. Tm I: 0.64. Tm IV present. Sternum grayish brown. Abdomen dark gray.
Epigynum ( Figs. 9 View Fig C-D): Ventral plate short and slightly convex, posterior margin waviness, covering shallow atrium. Anterior margin and lateral margin of lateral plate (LP) almost forming a right angle, median plate (MP) subquadrate, slightly concave. Spermatheca at each side, copulatory ducts S-shaped and opened under ventral plate.
Etymology. – The specific name is derived from the type locality.
Remarks. – The pattern of genital structure shows very similar to that of Walckenaeria unicornis O. P. - Cambridge, 1861 as illustrated by Wiehle (1960: 143, Figs. 246, 247, illustrations of Cornicularia unicornis ), but different in wave-shaped margin of ventral plate with two lobes (only one lobe in the latter).
Distribution. – Known only from the type locality.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.