Therlinya angusta, Gray & Smith, 2002

Gray, Michael R. & Smith, Helen M., 2002, Therlinya, a new genus of spiders from eastern Australia (Araneae: Amaurobioidea), Records of the Australian Museum 54 (3), pp. 293-293 : 309-310

Therlinya angusta n.sp.

Figs. 14a–e , 17

Type material. AUSTRALIA: QUEENSLAND —H OLOTYPE: Ƌ, QM S42281 , Mount Misery road, 15°53'S 145°13'E, 6 Dec. 1990 – 17 Jan. 1991 , Qld Museum & ANZSES, 730 m, flight intercept site 1. PARATYPES: ♀, QM S42271 , Mt Hartley , 15°46'S 145°20'E, 6 Nov. 1974 , J. Covacevich, D. Joffe & V.E. Davies , under stone on creek bed in cell retreat with web; Ƌ, KS58195 , 4♀♀, KS69646–49, Windsor Tableland, near Forestry Hut , 16°16'S 145°02'E, 23 Jul. 1995 , J. Thompson, M. Moulds, M. Tio, F. Mackillop, J. Olive, platform webs on side of bank in rainforest; ♀♀, KS44197, Windsor Tableland , at highest point of tableland, 16°14'S 145°00'E, 23 Jul. 1995 , J. Thompson, M. Moulds, M. Tio, F. Mackillop, J. Olive, rainforest; ♀, KS43619, locality data as above, J. Thompson , 17 Apr. 1994 ; ♀, QM S42269 , Thornton Peak via Daintree , 16°10'S 145°23'E, 22 Sep. 1981 , G. Monteith & D. Cook, 700–1000 m, rainforest; Ƌ, QM S42282 , Mt Sampson , 15°48'S 145°12'E, 27 Dec. 1990 – 18 Jan. 1991 , ANZSES Expedition, 600–790 m, flight intercept trap; ♀, QM S42270 , Shipton’s Flat , 15°48'S 145°16'E, 19 Nov. 1975 , V. E. Davies, C. Roberts , small shawl web & deep funnel retreat of thick silk in bank of dry stream bed .

Diagnosis. CL 2.98–4.78. Separated from all species, except other northern Queensland species, by weakness of leg banding; from T. monteithi by greater length of scape and smaller RTA; from T. lambkinae by lesser width of scape and relatively narrower cymbial flange width; from T. nasuta by presence of scape.

ventral; d, lateral; e, dorsal—internal genitalia. Scale line 0.5 mm.

Male (holotype). BL 6.57, CL 3.22 (2.98–3.67), CW 2.37, CapW 1.43, EGW 0.92, LL 0.49, LW 0.49, SL 1.59, SW 1.39. Legs: 1423 (I 16.33, II 14.67, III 11.67, IV 14.83); ratio tibia I length:CW = 1:0.57. Male palp: Fig. 14a,b , KS58195. Cymbium wide with strongly developed retrolateral flange. Bulb subcircular; tegular lobe well developed, placed retrolaterally. Embolus origin retrolateral. Stem of T-shaped conductor prolaterally directed, posterior limb placed prolaterally; tegular window large, placed basally. RTA short, dorsad, mostly hidden in ventral view; RVTA broad, width about one-third tibial length, with beaklike apex turned toward upper side in ventral view.

Female ( S42271 ). BL 7.84, CL 3.84 (3.35–4.78), CW 2.24, CapW 1.80, EGW 1.10, LL 0.59, LW 0.57, SL 1.71, SW 1.43. Northern colour pattern. Legs: 1423 (I 12.92, II 11.33, III 9.25, IV 11.50); ratio tibia I length:CW = 1:0.65. Epigynum: Fig. 14c,d . Scape relatively narrow, sides subparallel, distally truncate, at least half of scape projecting behind level of epigastric groove; in side view distoventral scape curved inwards, not protuberant; epigynal fossae oriented diagonally. Internal genitalia: Fig. 14e .

Distribution. From the Windsor Tableland northwards to Helenvale, south of Cooktown, northeastern Queensland.

Etymology. The specific name means “narrow” (L.) and refers to the width of the female scape in comparison to the other north Queensland species.

Figures

Figure 14. Therlinya angusta. a,b, male palp (KS58195): a, ventral; b, retrolateral; c–e, epigynum (S42271): c,

Figure 17. Distribution of Therlinya species: north Queensland. O T. monteithi, Z T. lambkinae, Δ T. angusta, A T. nasuta.