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 ballata
n.sp.
Figs. 10a–f
,
12
Type material
.
AUSTRALIA
:
NEW SOUTH WALES
HOLOTYPE
: Ƌ, KS34842 (
AMS
),
Cherry Tree North SF
, SW of
Casino
,
28°54'S
152°45'E
,
Apr. 1976
, M.
R
.
Gray
&
C. Horseman
.
PARATYPES
:
♀
, KS58201, data as for holotype; Ƌ, KS57681,
Acacia Plateau
&
Wilson’s Peak area
,
Koreelah SF
,
28°16'S
152°27'E
,
12 Dec. 1988
,
Smith
,
Hines
,
Pugh
&
Webber
,
Focal Peak Survey
, trap AP5; Ƌ, KS57683,
Cambridge Plateau
,
Richmond Range SF
,
28°47'S
152°45'E
,
17 Dec. 1988
,
Smith
,
Hines
,
Pugh
&
Webber
,
Focal Peak Survey
, trap CP9;
♀
, KS37198,
Boorook
SF
,
1 km
NW Boorook Creek
junction on
Conlongan Rd
,
28°51'24"S
152°11'27"E
,
18 Feb. 1993
, M.
R
.
Gray
&
G. Cassis
, pit-traps, site 09
BM
.
Diagnosis
. CL 2.65–3.75. Separated from all species by the asymmetric shape of the epigynal fossae; and from most species by the partial reflexion of the end of the conductor, except
T. vexillum
in which reflexion is stronger.
Figure 10
.
Therlinya ballata
. a,b, male palp (holotype): a, ventral; b, retrolateral.
–f, epigynum (KS58201): c, ventral; d, lateral RHS; e, lateral LHS; f, dorsal—
internal genitalia. Scale line 0.5 mm.
Male
(holotype). BL 7.71, CL 3.75 (2.86–3.75), CW 2.55, CapW 1.53, EGW 1.01, LL 0.59, LW 0.50, SL 1.82, SW 1.53. Legs: Leg formula 1243 (I 16.29, II 15.07, III 11.65, IV 13.95); ratio tibia I length to carapace width = 1:0.61. Male palp: Fig. 10a,b. Cymbium with moderately developed retrolateral flange. Bulb longer than wide with a small tegular lobe placed retrolaterally. Embolus origin retrolateral. Stem of T-shaped conductor probasally directed; anterior limb long, widened distally with a retrolateral lamina and partially reflexed; posterior limb placed basally; tegular window small, placed retrolaterally. RTA dorsad, visible in ventral view; RVTA relatively slender with small beak-like apex.
Female
(KS58201). BL 7.96, CL 3.60 (2.65–3.60), CW 2.29, CapW 1.71, EGW 1.03, LL 0.58, LW 0.52, SL 1.67, SW 1.31. Standard colour pattern. Legs: 1423 (I 12.84, II 10.80, III 9.13, IV 11.45); ratio tibia I length:CW = 1:0.70. Epigynum:
Fig. 10c–e
. Scape relatively long, mostly placed behind epigastric groove; moderately broad with sides gradually narrowing distally; in side view distoventral scape weakly protuberant. Epigynal fossae vertical but their shapes are somewhat distorted due to internal overlap and displacement of proximal copulatory ducts. Internal genitalia:
Fig.
10f
. Copulatory ducts very broad and overlapping proximally, so that the inner walls of the epigynal fossae are displaced relative to each other (
Fig. 10d–f
).
Distribution
. Northeastern
New South Wales
.
Etymology
. The specific name is an Aboriginal word for the native cherry tree and is a reference to the
type
locality.