A new species of the genus Sanmenia Song & Kim, 1992 (Araneae, Thomisidae) from Yunnan Province, China
Author
Yang, Zi-Zhong
Author
Zhu, Ming-Sheng
Author
Song, Da-Xiang
text
Zootaxa
2006
1151
41
46
journal article
50627
10.5281/zenodo.172147
74c69694-87f3-4e0f-b6bb-714988dd1b62
11755326
172147
Sanmenia gongshan
sp. nov.
Figs 1–10
Type
material:
Holotype
male,
CHINA
: Yunnan Province,
Gongshan
County, Gaoligong Mountains Nature Reserve,
1500–1600m
, Dandang Park,
27º43’N
,
98º39’E
,
3 May 2004
, Z. Z. Yang leg. (
MHBU
).
Paratypes
: two females and one male, same data as
holotype
(
MHBU
); six females and three males, same data as
holotype
(
CDLC
).
Additional material examined:
Three males,
CHINA
: Yunnan Province, Yingjiang County, Gangmeng Town,
24º40’N
,
97º59’E
,
1050 m
,
16 May 2004
, Z. Z. Yang, leg. (
MHBU
).
Diagnosis:
The new species differs from
S. kohi
(
Ono 1995: 163, figs 8–15
) and
S. zhengi
(
Song & Zhu 1997: 29, figs 13A–F
) by the following combination of characters: RTA large, combined with VTA basally; spermathecae distinctly reniform; chelicerae of both sexes with three promarginal and four retromarginal teeth respectively.
Etymology:
The specific name refers to the
type
locality and is a noun in apposition.
Description:
Male (
holotype
) (
Fig. 2
). Total length 3.67. Prosoma 1.68 long, 1.63 wide; opisthosoma 1.99 long, 1.78 wide. Carapace yellowish brown, pearshaped, slightly longer than wide, and covered with some small setae. Cephalic region rather dark brown, thoracic region with some brown spots. Both eye rows recurved. Diameters of eyes: AME 0.05, ALE 0.13, PME 0.08, PLE 0.13. Distances between eyes: AME–AME 0.10, AME–ALE 0.08, PME–PME 0.13, PME–PLE 0.10, ALE–PLE 0.15. MOA 0.25 long, anterior width 0.15, posterior width 0.30. Bases of the lateral eye tubercle separated. Clypeus furnished with five long spiniform setae, height equal to the diameter of PLE, yellowish brown. Chelicerae brown, rather small and narrow, with scopulae on both margins of fang furrow; three promarginal teeth, of these the proximal one largest, and four retromarginal teeth with the distal one largest (
Fig. 4
). Maxillae and labium yellowish brown. Sternum yellowish brown, posterior margin narrow and extending between coxae IV.
Opisthosoma oval, brown, furnished with numerous short setae; posterior half of dorsum with a pair of brown spot; margin with some short brown stripes; venter yellowish brown; spinnerets yellowish brown.
Patellae, tibiae and metatarsi of legs I–II reddish brown; tibiae and metatarsi of legs I– II with some thick spines. Other parts of legs yellowish brown. Spiniformation of legs: femora: I–IV dorsal 011, I prolateral 00111, retrolateral 01110; patellae: I–IV dorsal 11 (weak); tibiae: I–II dorsal 101 (weak), I–II pro and retrolateral 111, respectively, ventral 22222 (strong), III–IV dorsal 101, pro and retrolateral 101, respectively, ventral 02 (apical); metatarsi I–II pro and retrolateral 101, respectively, ventral 2222, III–IV pro and retrolateral 011, ventral 022. Leg formula: 1243. Measurements of legs:
femur |
patella+ tibia |
metatarsus |
tarsus |
total |
I |
2.19 |
2.97 |
1.71 |
0.63 |
7.50 |
II |
2.13 |
2.73 |
1.59 |
0.63 |
7.08 |
III |
1.30 |
1.55 |
0.80 |
0.45 |
4.10 |
IV |
1.45 |
1.70 |
1.00 |
0.45 |
4.60 |
FIGURES 1–6.
Sanmenia gongshan
sp. nov.
1 Female body, dorsal view; 2 Male body, dorsal view; 3 Left chelicerae, female, posterior view; 4 Left chelicerae, male, posterior view; 5 Epigyne, ventral view; 6 Same, dorsal view; Scale bars: 1–2, 0.5 mm; 3–6, 0.1 mm.
FIGURES 7–9.
Left male palp (7 prolateral view; 8 ventral view; 9 retrolateral view). Scale bars: 0.1 mm.
FIGURE 10.
Known distribution of the genus
Sanmenia
in China, Japan and Singapore.
Male palp as shown in
Figs. 7–9
. Tibia with six trichobothria, RTA large, combined with VTA basally. Bulb simple, longer than wide, apophysis absent; embolus thin and long, originating medially on prolateral side of bulb; conductor large and lamellar.
Female
(one
paratype
) (
Fig. 1
). Total length 4.16. Prosoma 1.95 long, 1.90 wide; opisthosoma 3.20 long, 3.15 wide. Diameters of eyes: AME 0.05, ALE 0.13, PME 0.08, PLE 0.13. Distances between eyes: AMEALE 0.08, AMEAME 0.10, PMEPLE 0.10, PMEPME 0.13, ALEPLE 0.15. MOA 0.25 long, anterior width 0.15, posterior width 0.30. Eye tubercles of ALE and PLE separated.
Patella, tibia, metatarsus and tarsus of leg I dark brown. Spiniformation of legs: Femora: I–IV dorsal 011, I prolateral 011; patellae: I–IV dorsal 11 (weak); tibiae: I–IV dorsal 01002 (apical), I–II pro and retrolateral 111, respectively, ventral 22222 (strong), III–IV prolateral 11, ventral 111 (right); metatarsi I–II pro and retrolateral 1 01, respectively, ventral 2222 (apical), III–IV pro and retrolateral 011, ventral 022. Leg formula: 1243.
Measurements of legs:
femur patella+ tibia metatarsus tarsus total
I 2.40 3.30 1.65 0.55 7.90
II 2.35 3.40 1.50 0.60 7.85
III 1.20 1.53 0.66 0.42 3.81
IV 1.38 1.68 0.81 0.45 4.32
Posterior half of dorsum with four brown spots, chelicerae (
Fig. 3
) and other characters as in male. Epigyne (
Figs. 5–6
) small, hood absent; copulatory openings clearly visible; spermathecae distinctly reniform.
Variation:
Body length: males 3.42–3.87, females 3.31–4.53. Prosoma: males length 1.54–1.83, width 1.51–1.80; females length 1.68–2.05, width 1.64–2.03. Opisthosoma: males length 2.02–2.08, width 1.76–1.92; females length 2.86–3.16, width 2.96–3.16.
Distribution:
China
: the Northwest area of Yunnan Province, shown as
Fig. 10
.