Seven new species of Meta C. L. Koch, 1836 (Araneae, Tetragnathidae) from Southwest China
Author
Wang, Lu-Yu
6C219212-8F77-4037-949C-1F17B252BFCE
Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China.
wangluyu1989@163.com
Author
Irfan, Muhammad
81552C4A-93FC-4B6E-8EA1-0B4E38CC6466
Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China.
irfanuos94@yahoo.com
Author
Chen, Hui-Ming
0B0FF1C7-C0A8-4836-B5D0-019F290EB663
Guizhou Institute of Biology, Guiyang 550009, China.
mei0601@126.com;zhangzs327@qq.com
Author
Zhang, Zhi-Sheng
91F0C98D-A307-431A-BAAD-9691F014E6BA
Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China.
mei0601@126.com;zhangzs327@qq.com
text
European Journal of Taxonomy
2022
2022-08-22
834
117
147
http://dx.doi.org/10.5852/ejt.2022.834.1905
journal article
128002
10.5852/ejt.2022.834.1905
4c24df32-5d1d-468e-a85a-e8c8ae263477
2118-9773
7017596
508297E3-787B-4B87-8C51-FCB35BB1D652
Meta wanglang
sp. nov.
urn:lsid:zoobank.org:act:
4AFF03AB-7F37-4B67-84AE-7BC24DAA7845
Figs 1J–K
,
16–18
,
22
Differential diagnosis
This species can be differentiated from all other congeners by the cymbial ectobasal process robust with three conspicuous projections, the outer projection horn-shaped with pointed end; median projection broad with many denticles and the inner projection relatively sclerotized, thumb-shaped with blunt end in male palp (
Figs 16B–C
,
17B–D
). The female can be differentiated from all other congeners by the spermathecae with buds-like outgrowths (
Figs 16E
,
18B
); posterior margin of epigynal plate relatively membranous (
Fig. 18B
). Both male and female abdomen anteriorly with a pair of humps (
Fig. 1J–K
).
Etymology
The epithet refers to the
type
locality.
Type material
Holotype
CHINA
•
♂
;
Sichuan Province
,
Pingwu County
,
Baima Township
,
Wanglang Nature Reserve
,
Muyangchang
;
32°58′04″ N
,
104°06′18″ E
; alt.
2503 m
;
24 Sep. 2019
;
L.Y. Wang
,
P. Liu
,
T. Yuan
,
Z. Fan
,
Y. Zhang
and
M. Zhang
leg.;
SWUC-T-TEg-07-01
.
Paratypes
CHINA
•
1 ♂
; same collection data as for holotype;
SWUC-T-TEg-07-02
•
9 ♀♀
; same collection data as for preceding;
SWUC-T-TEg-07-03–11
•
1 ♀
;
Muyangchang
;
32°58′04″ N
,
104°06′18″ E
; alt.
503 m
;
13 Oct. 2018
;
Z.S. Zhang
,
L.Y. Wang
,
Z. Fan
,
P. Liu
and
T. Yuan
leg.;
SWUC-T-TEg-07-12
•
1 ♂
;
Muyangchang
;
32°58′04″ N
,
104°06′18″ E
; alt.
2503 m
;
23 Aug. 2016
;
L.Y. Wang
and
Z.S. Wu
leg.;
SWUC-T-TEg-07-13
•
2 ♀♀
; same collection data as for preceding;
SWUC-T-TEg-07-14–15
.
Description
Male
(
holotype
,
Fig. 1J
)
MEASUREMENTS. Total length 5.84. Prosoma 2.81 long, 2.14 wide, opisthosoma 3.28 long, 2.53 wide. Eye sizes and interdistances: AME 0.16, ALE 0.17, PME 0.17, PLE 0.19; AME–AME 0.13, AME– ALE 0.19, PME–PME 0.11, PME–PLE 0.24, ALE–PLE 0.03. MOA 0.52 long, front width 0.44, back width 0.48. Clypeus height 0.17.
CHELICERAE. Strong, with 3 promarginal and 4 retromarginal teeth.
LEG MEASUREMENTS. I = 10.68 (3.69, 4.76, 3.44, 1.45); II = 8.83 (3.09, 3.84, 2.56, 1.23); III = 4.93 (1.90, 1.96, 1.37, 0.84); IV = 6.40 (2.59, 2.68, 1.97, 0.88). Leg formula: 1243.
OPISTHOSOMA. Oval, with two pairs of sigillae. Anteriorly with pair of humps, dorsum and venter white, with black markings.
PALP (
Figs 16A–C
,
17A–D
). Cymbial ectobasal process robust, with three conspicuous projections, outer projection horn-shaped with pointed end; median projection broad with many teeth and inner projection relatively sclerotized, thumb-shaped with blunt end. Paracymbium finger-like, relatively broad tip, with sparse long hairs. Metaine embolic apophysis grooved, with blunt end, extending forward.
Fig. 16.
Meta wanglang
sp. nov.
A–C
. ♂, holotype (SWUC-T-TEg-07-01).
D–E
. ♀, paratype (SWUC-T- TEg-07-03).
A
. Left palp, prolateral view.
B
. Same, ventral view.
C
. Same, retrolateral view.
D
. Epigyne, ventral view.
E
. Vulva, dorsal view.
Fig. 17.
Meta wanglang
sp. nov.
, ♂, holotype (SWUC-T-TEg-07-01).
A
. Left palp, prolateral view.
B
. Same, ventral view.
C
. Same, retrolateral view.
D
. Same, dorsal view.
EMBOLUS. Long, arc-shaped with fine tip. Conductor strong, arising meso-retrolaterally from bulb and extending clockwise, longer than wide.
Fig. 18.
Meta wanglang
sp. nov.
, ♀, paratype (SWUC-T-TEg-07-03).
A
. Epigyne, ventral view.
B
. Vulva, dorsal view.
Female
(
paratype
SWUC-T-TEg-07-03,
Fig. 1K
)
MEASUREMENTS. Total length 7.37. Prosoma 3.26 long, 2.60 wide; opisthosoma 4.49 long, 3.73 wide. Eye sizes and interdistances: AME 0.18, ALE 0.23, PME 0.20, PLE 0.23; AME–AME 0.16, AME– ALE 0.25, PME–PME 0.14, PME–PLE 0.30, ALE–PLE 0.04. MOA 0.56 long, front width 0.55, back width 0.61. Clypeus height 0.22.
LEG MEASUREMENTS. I = 14.84 (4.08, 5.23, 3.80, 1.73); II = 12.82 (3.62, 4.60, 3.15, 1.45); III = 7.52 (2.49, 2.30, 1.68, 1.05); IV = 10.00 (3.17, 3.27, 2.49, 1.07). Other morphological characteristics same as in male, except opisthosoma lighter in color with few black markings.
EPIGYNE (
Figs 16D–E
,
18A–B
). Posterior margin of epigynal plate relatively membranous.
VULVA. Spermathecae with buds-like outgrowths. Fertilization ducts thick, C-shaped.
Distribution
China
,
Sichuan
(Pingwu County) (
Fig. 22
).