Seven new species of Psechrus and additional taxonomic contributions to the knowledge of the spider family Psechridae (Araneae)
Author
Bayer, Steffen
text
Zootaxa
2014
2014-05-16
3826
1
1
54
journal article
http://dx.doi.org/10.11646/zootaxa.3826.1.1
e7c519fb-b07e-452b-91a5-efdec51eb764
1175-5326
286429
B6414C18-599A-44CE-9FCA-F20C845DE79D
Psechrus jaegeri
Bayer,
2012
Figs
25
C,
26
C
Psechrus jaegeri
Bayer
2012
:
90
, figs
48
a–d,
49
a–g,
50
f,
81g
,
83
c,
85
n,
88
n,
91
n (Description & illustration of ♂ and ♀).
Material examined
(
1
♂
,
1
s.a.
♂
):
LAOS
:
Champasak Prov
.:
Bolaven Plateu
,
Muang Bachieng
,
Ban Lak
35
, That I-Tou,
15
°
11
'
37.7
''N
,
106
°06'06.3''E
,
810 m
, coffee plantation with remnants of secondary forest, in vegetation,
P. Jäger
leg. at night,
16
.XI.
2012
,
♂
(
SB
1248
), s.a.
♂
(
SB
1249
),
SMF
64074
.
Remarks.
In
Bayer (
2012
)
only one male of this species was available for examination. To provide readers with some appreciation of the intraspecific variation a description of the male listed above and images of its copulatory organ (
Figs
25
C,
26
C) are given.
Description.
Male
:
Body and eye measurements: Carapace length 7.0, maximal carapace width
4.8
, anterior width of carapace
2.9
, opisthosoma length
10.2
, opisthosoma width
3.6
. Eyes: AME
0.37
, ALE
0.43
, PME
0.44
, PLE
0.44
, AME–AME
0.16
, AME–ALE
0.04
, PME–PME
0.22
, PME–PLE
0.34
, AME–PME
0.61
, ALE–PLE
0.39
, clypeus height at AME
0.86
, clypeus height at ALE
0.76
.
Cheliceral furrow with three promarginal and four retromarginal teeth.
Spination: Palp:
131
, 0 10, 1101 (all spines less than half as long as those on palpal femur); legs: femur I
566
{
555
}, II
556
{
566
}, III–IV
555
; patella I–IV 000; tibia I–II
3038
, III
3034
, IV
3036
{
3035
}; metatarsus I–IV
3035
.
Measurements of palp and legs: Palp
8.5
[
3.2
,
1.4
,
1.1
,
2.8
], I
57.4
[
15.1
,
3.2
,
15.7
,
16.5
,
6.9
], II
46.3
[
12.7
,
2.9
,
12.2
, 13.0,
5.5
], III
32.2
[
9.5
,
2.2
,
7.9
,
8.8
,
3.8
], IV
48.5
[
13.2
,
2.6
,
12.6
,
14.2
,
5.9
]. Leg formula:
1423
. FEMI+MTT-I/CL=
4.51
. Thus, legs short to medium-sized. In males of the
himalayanus
-group this value is usually slightly higher (on average ca.
5
).
Palpal femur without modification and virtually straight.
Intraspecific variation of male copulatory organs:
This male only shows slight differences to the
paratype
male (
Bayer
2012
, figs
48
a–d,
50
f,
85
n). In comparison to the
paratype
male the position of the conductor of the present male seems slightly shifted retrolaterally (
Figs
25
C). The shape and position of the embolus is similar to that of the
paratype
male.
Colouration.
As
described in
Bayer (
2012
, p.
94
)
, but in the new male the lateral bands on carapace are not distinctly narrow (ca.
1.25
diameter of PME).
Distribution.
Laos
,
Thailand
.