Allomedmassa crassa

Jin, Chi, Zhang, Hongli & Zhang, Feng, 2019, First records of the corinnid genera Allomedmassa Dankittipakul & Singtripop, 2014 and Medmassa Simon, 1887 from China, with the description of a new genus (Araneae: Corinnidae), Zootaxa 4585 (3), pp. 459-477: 466-467

publication ID

https://doi.org/10.11646/zootaxa.4585.3.3

publication LSID

lsid:zoobank.org:pub:1BA367F9-0A0D-4CC6-9D94-D947459723BA

persistent identifier

http://treatment.plazi.org/id/03D287C6-FF90-743F-87B9-FF06FD0C4E02

treatment provided by

Plazi

scientific name

Allomedmassa crassa
status

sp. nov.

Allomedmassa crassa  sp. nov. (Ṟǖflđ)

Figs 4View FIGURE 4 D–F, 5

Type material. Holotype:GoogleMaps  ♂, CHINA: Yunnan Province: Chuxiong City, Ailao Mountain National Nature Reserve   GoogleMaps (24°42.560′N, 101°01.601′E), 1422 m a.s.l., May 2011, leg. Zongxu Li.

Etymology. The specific name is a Latin adjective meaning "thick", referring to the thick base of the embolus.

Diagnosis. The new species resembles Allomedmassa bifurca  sp. nov.; for detailed diagnosis see above. Female unknown.

Description. Male ( Figs 4View FIGURE 4 D–F, 5). Holotype: body 11.96 long; carapace 5.98 long, 4.55 wide, width/length = 0.76; abdomen 5.98 long, 4.24 wide. Body colouration as in genus description. Diameters of eyes: AME 0.37, ALE 0.27, PME 0.31, PLE 0.33. Eye interdistances: AME–AME 0.24, AME–ALE 0.15, ALE–ALE 1.22, PME–PME 0.33, PME–PLE 0.40, PLE–PLE 1.76, ALE–PLE 0.14. OAW 2.05, CRW 2.89, OAW/CRW = 0.71. CRW/carapace width = 0.64. MOA 0.80 long, front width 0.93, back width 0.96. Clypeus height 0.33, 0.89 times of AME diameter. Chelicerae with three promarginal teeth, five or six retromarginal teeth. Labium 1.04 long, 0.89 wide. Sternum 2.72 long, 2.38 wide. Measurements of legs: I 17.12 (4.88 + 2.16 + 4.15 + 3.81 + 2.12), II 15.85 (4.49 + 2.02 + 3.83 + 3.44 + 2.07), III 13.78 (3.94 + 1.89 + 3.03 + 3.16 + 1.76), IV 17.77 (4.80 + 2.02 + 4.12 + 4.93 + 1.90). Leg formula: 4123. Leg spination: femora I–II pl 1 do 2, III–IV pl 1 do 3 rl 1; tibiae I plv 3–4 rlv 4, II plv 3 rlv 3, III pl 2 rl 2 plv 2 rlv 2, IV pl 2 rl 2 plv 2 rlv 1; metatarsi I–II plv 2 rlv 2, III–IV plv 2 rlv 2 vt 3.

Palp as illustrated ( Figs 4View FIGURE 4 D–F, 5E–G). Tibia with ventral surface flat and slanting, not forming hump; RTA long, almost straight, only slightly curved at end. Tegulum extremely convex on retrolateral side; sperm duct visible for most its length, hidden near base of embolus. Embolus thick, S-shaped in ventral view, with ridge-like projection in middle of retrolateral side.

Female unknown.

Distribution. China (Yunnan) ( Fig. 12View FIGURE 12).