Four new species of the genus Draconarius Ovtchinnikov, 1999 (Araneae, Agelenidae) from the Tibetan Plateau, China
Author
Li, Bing
Author
Zhao, Zhe
Author
Chen, Haifeng
Author
Wu, Zhiyan
Author
Li, Shuqiang
text
Zootaxa
2019
2019-07-29
4648
1
141
154
journal article
25534
10.11646/zootaxa.4648.1.7
621a93ac-5768-4dc0-9a7f-0c7916d2de20
1175-5326
3353959
2EF4E39B-B8D0-4B3E-8932-06E706A5954B
Draconarius linzhiensis
(
Hu, 2001
)
Figs 3–4
,
8
Coelotes linzhiensis
Hu, 2001: 138
, fig. 48.1–2.
Draconarius linzhiensis
(
Hu, 2001
)
Wang, 2003: 537
;
Zhu
et al.
2017: 350
, fig. 184A–B.
Type material.
Holotype
♀
(
SDU
, not examined):
Nyingchi City
(
2750 m
),
Tibet
,
China
,
18. VII. 1988
,
F.P. Zhang
leg.
Paratypes
:
5♀
(
SDU
, not examined): same data as holotype
.
Material examined.
1♂
(IZCAS-Ar39618):
Segula Mountain
(
N29.59782º
,
E94.60458º
,
4200 m
),
Bayi
Coun- ty,
Nyingchi City
,
Tibet
,
China
,
22. V. 2010
,
H. Yu
,
D.J. Ciren
and
G.R. Zhang
leg.
;
1♂
(IZCAS-Ar39619):
Same mountain
as IZCAS-Ar39618 (
N29.59473º
,
E94.60057º
,
4162 m
),
26. VIII. 2018
,
X.Q. Zhang
and
J.C. Liu
leg.
;
1♀
(IZCAS-Ar39620), same data as IZCAS-Ar39619
;
3♂
6♀
(IZCAS-Ar39621), same data as IZCAS-Ar39619
.
FIGURE 3.
Left male palp of
Draconarius linzhiensis
.
A
Prolateral view
B
Ventral view
C
Retrolateral view. Scale bar: equal for
A
,
B
,
C
.
Diagnosis.
The male of
D
.
linzhiensis
can be separated from its similar species
D
.
tibetensis
Wang, 2003
by having the
VTA
and
RTA
spine-like; cymbial furrow short, about 1/2 cymbial length; embolus does not coil and is distally short. The two species can easily be separated by the size of the
RTA
(
VTA
about 2 times longer than
RTA
in
D. linzhiensis
in
Fig. 3C
and
4
times longer in
D. tibetensis
in fig 64C in
Wang 2003
) and the shape of the dorsal apophysis of the conductor (triangular in
D
.
linzhiensis
in
Fig. 3B
and rectangular in
D. tibetensis
in fig. 64B in
Wang 2003
). The female of
D
.
linzhiensis
is most similar to
D
.
himalayaensis
(
Hu, 2001
)
. The two species differ by the posterior margin of the atrium, which is obvious and well separated from the posterior margin of the epigyne in
D
.
linzhiensis
(
Fig. 4A
) while in
D
.
himalayaensis
the posterior margin of the atrium is close to the posterior margin of the epigyne, making the posterior margin of the atrium more obscure (fig.
45.1 in
Hu 2001
); additionally, in
D
.
linzhiensis
the spermathecal heads originate medially from the spermathecae (
Fig. 4B
) and in
D
.
himalayaensis
they originate anteriorly (fig.
45.2 in
Hu 2001
).
FIGURE 4.
Epigyne and habitus of
Draconarius linzhiensis
.
A
Epigyne, ventral
B
Internal genitalia, dorsal
C
Male habitus, dorsal
D
Female habitus, dorsal
E
Female habitus, ventral. Scale bars: equal for
A
and
B
, equal for
C
,
D
and
E
.
Description. Male (
IZCAS
-Ar39619).
Carapace brown. Clypeus, endites, labium black-brown. Sternum and legs brown. Abdomen light-brown, with five chevron-shaped patterns, covered by blueish-grey hairs. Spinnerets have the same colour as the carapace. Total length 10.23. Carapace 4.92 long, 3.53 wide. Abdomen 5.31 long, 3.11 wide. Eye sizes and interdistances: AME 0.12, ALE 0.19, PME 0.15, PLE 0.17; AME–AME 0.12, AME–ALE 0.15, AME–PME 0.09, ALE–PLE 0, PME–PME 0.12, PME–PLE 0.14. Leg measurements: I 18.18 (6.06, 5.49, 4.32, 2.31); II 17.62 (5.61, 5.16, 4.17, 2.68); III 14.27 (4.79, 3.79, 3.54, 2.15); IV 19.48 (6.22, 5.82, 5.26, 2.18). Palp: Femur 3.4 times longer than wide. Patellar apophysis long,
VTA
and
RTA
spine-like,
VTA
about 2 times longer than
RTA
. Patellar macrosetae lacking, tibia and base of cymbium with long dorsal and prolateral macrosetae. Cymbium 1.8 times longer than bulb, cymbial furrow short, about 1/2 cymbial length; conductor short, with large basal lamella and small dorsal apophysis; embolus originates at about the 6 o'clock position (
Fig. 3
A–C).
Female (
IZCAS
-Ar39620):
Colour and abdominal patterns as in males. Total length 10.01. Carapace 4.93 long, 3.83 wide. Abdomen 5.08 long, 3.85 wide. Eye sizes and interdistances: AME 0.10, ALE 0.10, PME 0.13, PLE 0.16; AME–AME 0.13, AME–ALE 0.15, AME–PME 0.12, ALE–PLE 0, PME–PME 0.18, PME–PLE 0.21. Leg measurements: leg I 15.92 (6.04, 4.65, 3.29, 1.94); II 14.95 (5.89, 4.09, 3.26, 1.71); III 14.22 (5.17, 3.98, 3.09, 1.98); IV 17.52 (6.04, 4.95, 4.17, 2.36). Other descriptions see
Hu (2001)
and
Wang (2003)
. Photos of habitus and epigyne are provided here (
Fig. 4
A–B, D–E).
Variation.
Total length of males 10.23–14.06 (n=5) and of females 10.01–15.50 (n=13).
Distribution.
Known only from
Tibet
,
China
(
Fig. 8
).