On the taxonomic validity of Indian ground spiders: III. Genus Phaeocedus Simon, 1893 (Araneae: Gnaphosidae)
Author
Sankaran, Pradeep M.
Author
Caleb, John T. D.
Author
Sebastian, Pothalil A.
text
Journal of Natural History
2020
2020-10-28
54
21 - 22
1325
1336
http://dx.doi.org/10.1080/00222933.2020.1797201
journal article
10.1080/00222933.2020.1797201
1464-5262
5757827
Drassodes haribhaiius
(
Patel & Patel, 1975
)
comb. nov.
(
Figure 1
(a,b,c))
Phaeocedus haribhaiius
Patel & Patel, 1975: 37
, fig. 3A–E.
Type material
Holotype
female from
INDIA
:
Gujarat
:
Kaira
:
Vallabh Vidhyanagar
(22°32
ʹ
51.56
ʹ
’N, 72° 55
ʹ
30.50
ʹ
’E;
41 m
alt)
ca
.
6 km
West of Anand
,
B.H. Patel
leg.,
3 August 1970
, repository NZC-ZSI (no register number),
Kolkata
, examined.
Justification of the transfer
Patel and Patel (1975)
described
P. haribhaiius
based on a single female specimen collected in
Gujarat
. The chelicera illustrated for this species (
Patel and Patel 1975
: fig. 3D) is provided with both pro- and retromarginal teeth, which clearly indicate that this species is misplaced in
Phaeocedus
, as members of this genus lack cheliceral teeth (
Platnick and Shadab 1980
). Detailed examination of the
holotype
of this species revealed that it has all the diagnostic features of
Drassodes
Westring, 1851
as illustrated for
Drassodes lapidosus
(
Walckenaer, 1802
)
, the type species of the genus (
Platnick and Shadab 1976
: fig. 7): trochanters with deep notch and epigyne with mid-piece and curved lateral margins. Based on these observations, we consider the transfer of
P. haribhaiius
to
Drassodes
fully justified.
Figure 1.
Phaeocedus haribhaiius
Patel & Patel, 1975
(NZC-ZSI-3445/18), holotype (=
Drassodes haribhaiius
comb. nov.
). (a) female, dorsal view. (b) epigyne. (c) label from type bottle. Scale bars a = 2 mm; b = 0.2 mm.
Supplementary description
Female
(
holotype
,
Figure 1
(a)): chelicerae with three promarginal teeth. Body length 8.50. Prosoma length 3.13, width 2.22. Opisthosoma length 5.37, width 3.01. Eye diameters: ALE 0.15. AME 0.17. PLE 0.14. PME 0.21. Eye interdistances: AME–ALE 0.04. AME–AME 0.14. AME–PME 0.13. PME–PLE 0.20. PME–PME 0.06. Length of chelicerae 1.27.
Measurements of palp and legs: Palp 2.78 [1.11, 0.41, 0.52, 0.74], I 7.41 [2.26, 1.04, 1.55, 1.43, 1.08], II 6.93 [1.90, 1.11, 1.48, 1.39, 1.05],
III 6.41
[1.84, 0.89, 1.29, 1.48, 0.91], IV 8.91 [2.37, 0.99, 1.94, 2.44, 1.17]
. Leg formula: 4123.
Genitalia
(
Figure 1
(b)): epigyne with narrow lateral pouches. Mid-piece less sclerotised. Lateral epigynal margins sclerotised, fused with mid-piece.
Male.
Unknown.
Remarks
Figure 2.
Phaeocedus mosambaensis
Tikader, 1964
(NZC-ZSI-2486/18), holotype (=
Drassodes lutescens
(C. L.
Koch, 1839
))
. (a) female, dorsal view. (b) epigyne. (c) vulva. (d) label from type bottle. Scale bars a = 1 mm; b, c = 0.2 mm.
The ZSI collection has two glass bottles for this species, both labelled as ‘holotype’ (3445/18); only one bottle contains a female specimen, which is in good condition and with its genitalia intact.