Draconarius exilis , Zhang, Zhi-Sheng, Zhu, Ming-Sheng & Wang, Xin-Ping, 2005

Zhang, Zhi-Sheng, Zhu, Ming-Sheng & Wang, Xin-Ping, 2005, Draconarius exilis, a new species of coelotine spider from China (Araneae, Amaurobiidae), Zootaxa 1057, pp. 45-50: 46-48

publication ID

http://doi.org/ 10.5281/zenodo.170115

publication LSID

lsid:zoobank.org:pub:788FD5B1-7583-4E9F-96B6-C784A3429427

persistent identifier

http://treatment.plazi.org/id/A6679A21-8D78-FFCF-FEB7-9CCE3447FB5E

treatment provided by

Plazi

scientific name

Draconarius exilis
status

sp. nov.

Draconarius exilis  sp. nov. ( Figs. 1–7View FIGURES 1 – 6View FIGURE 7)

Type material: Holotype male, 5 male and 20 female paratypes, from Jiuzhaigou (33 ° 17 ’ N, 103 ° 54 ’ E, 3000m), Sichuan, China, 20 September 2004, Z.S. Zhang leg., deposited in MHBU.

Etymology: The specific name is derived from “ exilis  ” (Latin—thin, slender), referring to the thin and long male palp. It is an adjective in apposition.

Diagnosis: The male is similar to D. incertus  ( Wang 2003: 535, figs. 35 A –B), but can be distinguished by the absence of a patellar apophysis and the short RTA (only 1 / 3 tibial length). Females can be distinguished from both D. incertus  ( Wang 2003: 541, figs. 47 A – B) and D. pseudobrunneus  ( Wang 2003: 544, figs. 52 A –B) by the indistinct wrinkled epigynum and the variable shape of their spermathecae ( Figs. 2–6View FIGURES 1 – 6).

Description: Male (holotype): Total length 8.06: carapace 4.08 long, 2.96 wide; abdomen 4.18 long, 2.45 wide. AME 0.20, ALE 0.18, PME 0.15, PLE 0.13. AME –AME 0.08, AME –ALE 0.05, PME –PME 0.15, PME –PLE 0.20. ALE –PLE 0.08. MOA 0.45 long, front width 0.33, back width 0.45. Clypeus height 0.23. Chelicerae with 3 promarginal and 2 retromarginal teeth. Leg formula: 4123.

Leg measurements:

femur patella+ tibia metatarsus tarsus total

I 4.08 5.20 4.28 2.55 16.11 II 3.88 4.28 3.88 2.35 14.39 III 3.37 3.77 3.67 1.94 12.75 IV 4.28 5.00 5.10 2.45 16.83 Male palp ( Figs. 4–6View FIGURES 1 – 6) with lateral tibial apophysis small, widely separated from RTA; cymbial furrow shorter than half of cymbial length; conductor short, with bifurcated apex; conductor lamella indistinct; conductor dorsal apophysis present; median apophysis simple, not spoon­shaped; embolus short, originating prolaterally.

Female (one of the paratypes): Total length 8.98: carapace 4.39 long, 2.96 wide; abdomen 4.89 long, 3.26 wide. AME 0.13, ALE 0.20, PME 0.15, PLE 0.20. AME –AME 0.05, AME –ALE 0.08, PME –PME 0.20, PME –PLE 0.18. ALE –PLE 0.10. MOA 0.50 long, front width 0.38, back width 0.50. Clypeus height 0.25. Chelicerae with 3 promarginal and 2 retromarginal teeth.

Leg measurements:

Epigyne ( Figs. 2–3View FIGURES 1 – 6) weakly wrinkled, without epigynal teeth; atrium slit­like, indistinct; copulatory ducts short, mesally originating; spermathecae small, rounded, slightly anterior extending and widely separated by approximately their width; spermathecal heads anterior originating.

Habitat: Under the deadwoods or tree barks in humid locality.

Distribution: China (Sichuan) ( Fig. 7View FIGURE 7).