Therlinya, a new genus of spiders from eastern Australia (Araneae: Amaurobioidea)
Author
Gray, Michael R.
Author
Smith, Helen M.
text
Records of the Australian Museum
2002
2002-10-30
54
3
293
293
https://journals.australian.museum/gray-and-smith-2002-rec-aust-mus-543-293312/
journal article
10.3853/j.0067-1975.54.2002.1368
2201-4349
5754999
Therlinya foveolata
n.sp.
Figs. 5a–e
,
6
Type material
.
AUSTRALIA
:
VICTORIA
—H OLOTYPE: Ƌ, KS34792 (
AMS
), near
Delley’s Dell
turn-off,
Silverband Road
,
Grampian Ranges
,
37°11'S
142°31'E
,
24 Mar. 1974
, M.
R
.
Gray
, collected as juvenile, matured
Apr. 1974
.
PARATYPES
:
♀
, KS34793, data as for holotype, adult coll.;
♀
, KS34797,
Stony Creek
Bridge, near
Hall’s Gap
,
Grampian Ranges
,
37°09'S
142°30'E
,
21 Mar. 1974
, M.
R
.
Gray
;
4♀♀
, KS34795, 8 km SW of Hall’s Gap on Silverband Road, Grampian Ranges,
37°11'S
142°31'E
, 24
Mar. 1974, M.R. Gray; ♀, KS34796; ♀, KS34794, with 60 young; both data as for KS34795.
Other material
. AUSTRALIA: VICTORIA ♀, KS73046, 10 km S of Forrest on Forrest–Apollo Bay Rd, Otway Ranges, 38°35'S 143°43'E, 31 Mar. 1978, M.R. Gray, in road bank—regrowth Stringybark forest above, in large sheet web, c. 35×15 cm curving up & out from bank retreat.
Diagnosis
. CL 3.71–4.08. Separated from all other species by the pit-like epigynal fossa and centrad placement of the RTA.
Male
(holotype). BL 7.71, CL 3.71, CW 2.47, CapW 1.53, EGW 1.03, LL 0.59, LW 0.50, SL 1.75, SW 1.49. Legs: 1423 (I 15.05, II 13.42, III 11.04, IV 13.89); ratio tibia I length:CW = 1:0.72. Male palp: Fig. 5a,b. Cymbium wide with well-developed retrolateral flange. Bulb longer than wide with tegular lobe placed basally. Embolus origin basal. Stem of T-shaped conductor anteriorly directed, posterior limb placed retrolaterally; tegular window small, prolateral. RTA large, centrad, and visible in ventral view; RVTA with broad, beak-like apex.
Female
(
KS
34794). BL 7.67, CL 3.96 (3.96–4.08), CW 2.55, CapW 2.00, EGW 1.14, LL 0.63, LW 0.59, SL 1.82, SW 1.44. Standard colour pattern. Legs: 1423 (I 13.24, II 11.20, III 9.40, IV 11.60); ratio tibia I length:CW = 1:0.79. Epigynum:
Fig. 5c,d
. Cordate, unpaired, central fossa with copulatory openings placed at anterolateral corners and opening posteromedially. Scape absent to rudimentary, probably represented by a midline cusp on the anterior epigynal margin. Internal genitalia:
Fig. 5e
. Copulatory ducts short.
Distribution
. Grampian and Otway Ranges,
Victoria
.
Comments
. The Otway Range spiders may prove to be a separate species from the Grampian spiders but this will not be resolved until Otway males are available.
Etymology
. The specific name refers to the pit-like epigynal fossa, unique within this genus.