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)
Author
Jin, Chi
Author
Zhang, Hongli
Author
Zhang, Feng
text
Zootaxa
2019
2019-04-15
4585
3
459
477
journal article
27300
10.11646/zootaxa.4585.3.3
8310713c-38e5-4c1e-9f6d-9c54e62bce52
1175-5326
2640190
1BA367F9-0A0D-4CC6-9D94-D947459723BA
Allomedmassa crassa
sp. nov.
(Ṟǖflđ)
Figs 4
D–F, 5
Type material.
Holotype
:
♂
,
CHINA
:
Yunnan Province
:
Chuxiong City
,
Ailao Mountain National Nature Reserve
(
24°42.560′N
,
101°01.601′E
),
1422 m
a.s.l.
,
May 2011
, leg.
Zongxu Li.
FIGURE 5.
Allomedmassa crassa
sp. nov.
, male: A. habitus, dorsal view; B. same, ventral view; C. ocular area, dorsal view; D. cephalothorax, frontal view; E. left palp, prolateral view; F. same, ventral view; G. same, retrolateral view. Scale bars: 2 mm (A–B); 1 mm (D); 0.5 mm (C, E–G).
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 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 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. 12
).