Forest Spiders of South East Asia With a revision of the sac and ground spiders (Araneae: Clubionidae, Corinnidae, Liocranidae, Gnaphosidae, Prodidomidae and Trochanteriidae).
Author
Deeleman-Reinhold, Christa
text
2001
Brill Leiden; Boston; Köln
Leiden, Netherlands
Forest Spiders of South East Asia With a revision of the sac and ground spiders- Family Liocranidae (Oedignatha)
261
276
book chapter
10.5281/zenodo.2600448
4aaaf651-5ec3-486e-9b68-44989ea0c86c
2600448
Oedignatha spadix
sp. n.
(
figs 371-374
,
map 20
)
Type
loality
.— Indonesia, N Bali.
Type material
.—
Holotypc
♂
,
Ambengan
near
Singaraja
. 9-
31.i.1990
,
S.
Djojosudharmo
;
paratypes
:
6
♂
,
19 ♀
, same data
.
Other material
.—
Sumbawa Island
,
Samokat
,
2
♂
,
2 ♀
, with 5
♂
. 6 ♀
O
.
scrobiculata,
480 m
, secondary forest.
1-3.i.1990
.
S.
Djojosudharmo
;
C
Sulawesi
.
Palu. Lore Lindu
reserve,
2 ♀
. leaf litter near river,
23.vii.1982
,
P.R.
and
C.L. Deeleman
;
Taneah
.
40 km
S of
Kendari
.
1 ♀
, leaf litter,
11.viii.1980
.
P.R.
and
C.L. Deeleman
:
Sampara
.
40 km
W of
Kendari
,
1 ♀
, leaf litter,
12.viii.1980
,
P.R.
and
C.L. Deeleman
.
Diagnosis
.— A species with uniform dark dorsal scutum, related to 0.
jocquei
; it is distinct from that and other related species listed in the diagnosis of 0.
jocquei
by the longer epigyne which is longer than wide, left and right dark elements separated by a pale elongate zone of uniform diameter; posteriorly there is a relatively large posterior window with crescent ridge; transverse ducts separate the spermathecae from the bursae. The main branch of the tibial apophysis of the male palp is wide, concave; the embolus is inserted proximally on the tegulum; a small narrow tegular apophysis is present.
Description
.— MALE.
holotype
. Total length
5.50 mm
. Carapace length
2.50 mm
. width
1.75 mm
,
height
1.25 mm
, head width
1.20 mm
,
eye
width 1.00 mm; abdomen length
2.50 mm
. width
1.50 mm
. Leg lengths: leg I
8.50 mm
(2.25-3.00-2.15-1.10), leg II
6.90 mm
(1.90-2.25-1.75-1.00), leg III
5.70 mm
(1.60-1.75-1.50-0.85), leg
IV
8.30 mm
(2.15-2.75- 2.25-1.15), palp 1.00-0.40-0.45-1.00 mm. All aspects as in
scrobiculata
,
hump on clypeus somewhat smaller and more angular, tibiae of walking legs darker with lighter band apically. light spots on abdomen absent. Spine formula: all femora with a small proximal spine dorsally which is sometimes missing in leg II and III. femur I distally a prolateral spine; tibia
I 8
pv. 7rv. tibia
II 8
pv
. 6rv. tibia
III 1
v, 1-1pv or 1-0pv. tibia
IV 1-1
pv
. 0-1rl; metatarsus
I 5
pv, 6rv, metatarsus
II 4
pv, 4rv, metatarsus
III and IV 1
pv, 1rv. Palpal tibial apophysis (
figs 371, 372
) wide and concave. in the middle a small indention, proximally a pointed fingerlike projection; embolar base larger than in
scrobiculata
,
embolus longer. arising mesally and describing a full circle; shape of conductor different.
FEMALE. Total length
5.50 mm
. Carapace length
2.35 mm
, width
1.60 mm
, head width
1.25 mm
, eye width
0.80 mm
; abdomen length
2.50 mm
, width
1.80 mm
, epigyne
0.50 mm
wide. Leg lengths: leg I
7.65 mm
(2.05-2.75-1.85-1.00), leg II
6.05 mm
(1.65-2.15- 1.45-0.80), leg III
5.20 mm
(1.50-1.50-1.40-0.80), leg IV
7.40 mm
(1.90-2.45-2.05-1.00), palp 0.90-0.35-0.50-
0.87 mm
. Epigyne see diagnosis and
fig. 373
, vulva
fig. 374
.
Distribution.
— Eastern Indonesia. Found at present on the Lesser Sunda Islands Bali and Sumbawa and in central and southeastern Sulawesi. On the Lesser Sunda Islands in mixed population with
0.
scrobiculata
.
Variability.
— In the specimens from Sulawesi the colouration of the legs shows more contrast.
Etymology.
— From
spadix
(Lat.)
= chestnut brown.
Note.
— This species is closely related or identical with
Amaurobius andamanetsis
Tikader
, the insufficient description and illustrations of this species show the characteristic concave arch of the male palpal tibial apophysis. The figure of the bulb is much simplified and does not show any detail. the shape of the epigyne seems to be shorter and wider than in
spadix
.