A review of the spider genus Sinanapis, with the description of a new species from Tibet (Araneae, Anapidae)
Author
Zhang, Qiqi
Author
Lin, Yucheng
text
ZooKeys
2018
790
45
61
http://dx.doi.org/10.3897/zookeys.790.25793
journal article
http://dx.doi.org/10.3897/zookeys.790.25793
1313-2970-790-45
4B74B0E439454858AFCAF02F38445308
Sinanapis medogense
sp. n.
Figs 5, 6, 7
Type
material.
Holotype: ♂ (NHMSU), CHINA: Tibet Autonomous Region, Nyingchi Prefecture, Medog County, Renqinbeng Mountain,
29°19.050'N
,
95°19.998'E
; 1314 m, 26.VIII.2015, J.L. Wu leg. Paratypes: 1♂, 2♀ (NHMSU), same data as holotype.
Etymology.
The specific name derives from the type locality; adjective.
Diagnosis.
The male of this new species can be distinguished from that of
S. longituba
and
S. wuyi
by the lack of anterior median eyes and having a rasper-like dentigerous process (Figs 5G, 6G, H). In the case of the two latter species, the anterior median eyes are present, and the rasper-like dentigerous patellar process is absent (Figs 3G, 4A, 9D; Yuan and Peng, 2014: figs 7, 9). It also differs from
S. crassitarsa
by having a tubular basal apophysis, and a smaller dentigerous process (Figure 6A, B,
G-I
). In
S. crassitarsus
, the basal apophysis is laminar, and the dentigerous process is larger (Figure 2
A-D
, F). The female of the new species differs from
S. longituba
by having shorter copulatory ducts, each coiling with less than two loops next to the spermatheca (Figure 7I). In
S. longituba
, each copulatory coil around the spermatheca in more than two loops (Figure 4H).
S. medogense
further differs from
S. wuyi
by the absence of anterior median eyes, and by having a white pattern on the abdomen (Figure 5C, F), whereas the anterior median eyes are present and the abdominal white pattern is absent in
S. wuyi
(Figure 8D, F; Yuan and Peng, 2014: figs 7, 9).
Figure 5.
Sinanapis medogense
sp. n., male holotype (
A-B
, E,
G-I
) and female paratype (
C-D
, F) from Xizang.
A-F
Habitus G, H Prosoma I Chelicerae A, C dorsal B, D ventral
E-F
, H lateral G, I frontal. Abbreviations: CT cheliceral tubercle; LS labial spur. Scale bars: 0.50 (
A-F
); 0.25 (
G-I
).
Figure 6.
Sinanapis medogense
sp. n., male holotype from Xizang. A, B, E, F Left palp C, D Left leg I G, H Palpal patella and tibia I Patellar apophysis A, D, G prolateral B, C retrolateral E ventral F, H, I dorsal. Abbreviations: BA basal patellar apophysis; Cu cusps on leg I; Cy cymbium; DA dorsal patellar apophysis; DP dentigerous patellar process; Em embolus; Fe femur; LA lateral patellar apophysis; Pa patella; TA tibial apophysis; Ti tibia; Te tegulum. Scale bars: 0.25 (A, B,
E-H
); 1.00 (C); 0.50 (D); 0.05 (I).
Figure 7.
Sinanapis medogense
sp. n., male holotype (
A-C
, E, F) and female paratype (D,
G-I
) from Xizang.
A-D
Abdomen E Spinnerets F Epigastric scutum G
Epigyne
H, I Vulva (lactic acid-treated) A, D,
F-H
ventral B, I dorsal C, E antapical. Abbreviations: BC booklung covers; CD copulatory duct; CO copulatory opening; FD fertilization duct; S spermatheca. Scale bars: 0.50 (
A-D
); 0.20 (
E-G
); 0.10 (H, I).
Description.
Male (holotype): Somatic characters and coloration as in Figs 5A, B, E,
G-I
, 7
A-C
, E, F. Measurements: Total length 1.86. Carapace 0.96 long, 0.72 wide, 0.72 high. Clypeus 0.40 high. Sternum 0.52 long, 0.42 wide. Abdomen 0.90 long, 0.94 wide. Length of legs: I 3.76 (1.18, 0.40, 1.04, 0.42, 0.72); II 2.68 (0.82, 0.32, 0.62, 0.32, 0.60); III 2.02 (0.60, 0.22, 0.40, 0.28, 0.52); IV 2.52 (0.78, 0.24, 0.60, 0.34, 0.56).
Palp
(Figure 6
A-I
): Trochanter very long, subequal to 2/3 of femur length. Femur distally swollen approx. 2 times wider than proximally. Patella, complex, each modified with four apophyses (Figure 6H): basal apophysis long horned, almost as long as patella; two dorsal apophyses, one crooked and fingerlike, and another rasper-
like
dentigerous process (Figure 6I); a lateral apophysis straight, finger-shaped, protruded. Tibia with a dorsal apophysis and a dorsal trichobothrium (Figure 6
F-H
). Cymbium bowl-shaped, as wide as long, covered with sparse long setae. Bulb simple, cone-shaped, tegulum smooth and flat, without any apophysis. Embolus long, strongly sclerotized, started at the middle margin of bulb, and ends in the above of subcentral bulb, coiled almost into two loops, distally tapering (Figure 6A, E).
Female (paratype). Somatic characters and coloration as in Figs 5C, D, F, 7D. Measurements: Total length 1.96. Carapace 1.02 long, 0.64 wide, 0.80 high. Abdomen 0.94 long, 0.43 wide. Clypeus 0.46 high. Sternum 0.61 long, 0.43 wide. Length of leg: I 3.42 (1.12, 0.36, 0.90, 0.40, 0.64); II 2.48 (0.76, 0.30, 0.58, 0.28, 0.56); III 1.8 (0.54, 0.20, 0.38, 0.22, 0.46); IV 2.3 (0.72, 0.24, 0.56, 0.28, 0.50).
Epigyne
(Figure 7
G-I
):
Epigyne
sclerotized, almost rectangular, about 2 times wider than booklung cover, vulva visible through the translucent integument; copulatory openings large, sub-rounded, closed to the epigynal posteromargin. Spermatheca globular, each with a width equal to 2/3 of the breadth of booklung cover, separated by a gap measuring around its own diameter; copulatory ducts coiled the base of spermathecae, starting near the rebordered epigynal posteromargin, and ended at the posterolateral margins of spermathecae; fertilization ducts short, and thin, connected with the bases of the spermathecae.
Distribution.
Known only from the type locality.