Couranga kioloa, Gray & Smith, 2008

Gray, Michael R. & Smith, Helen M., 2008, A New Subfamily of Spiders with Grate-shaped Tapeta from Australia and Papua New Guinea (Araneae: Stiphidiidae: Borralinae), Records of the Australian Museum 60 (1), pp. 13-44 : 23-25

Couranga kioloa n.sp.

Figs 1a–f , 2a–d , 6a–d , 8b

Type material. New South Wales: HOLOTYPE:?, KS74065, 1.5 km W of Kiah on Towamba Rd , 37°09'S 149°50'E, 15 Apr. 1978, M.R. Gray, small, angled sheet webs projecting from shallow retreats in soil bank and guyed to vegetation . PARATYPES:!, KS74066, data as for holotype;!, KS74064, data as for holotype, sheet webs in mossy bank along road, female matured in captivity;? KS69662,!, KS86843, Mogo SF, 10 km S of Batemans Bay on Princes Highway, 35°48'S 150°08'E, 18 Apr. 1978, M.R. Gray, in webs under rock, open forest;? KS34571,!, KS86842, Smiths Lake turn-off, Myall Lakes, 32°23'S 152°30'E, 27 Apr. 1974, M.R. Gray .

Other material. New South Wales:!, KS1931, Kioloa SF, Forest Drive, 35°37'S 150°16'E, 2 Nov. 1978, C. Horseman, in litter, with egg sac 4 mm diameter in silk purse retreat 10 mm diameter, eggs pale orange;?, KS5546, Benandarah SF, 8 km N of Batemans Bay, 35°40'S 150°14'E, 4–30 Oct. 1979, C. Horseman;!, KS6470, Royal National Park, Sydney, 34°08'S 151°04'E, 16 Jan. 1981, M. Gray, dry sclerophyll, under log in small messy sheet web;!, KS34572, Darkes Forest , 34°14'S 150°55'E, 8 Sep. 1972, R.E. Mascord;?,!, KS34573, 13 km N of Bega on Bega –Bermagui back road, 36°25'S 150°04'E, 18 May 1973, M.R. Gray, under dry log in dry area open forest, tangled web in crevice;?,!, KS34574, 11 miles S of Kempsey on Joes Cutting turn-off, 31°15'S 152°49'E, 27 Apr. 1974, M.R. Gray, in bank in suspended sheet web;!, KS34576, Maria SF picnic area near Kempsey, 31°11'S 152°50'E, 23 Apr. 1974, M.R. Gray, with egg sac;?, KS41267, Bundjalung NP, on ridge between Big Marsh & Esk River , 29°17'35"S 153°16'40"E, 4 Feb.–9 Apr. 1993, M. Gray & G. Cassis, NE NSW NPWS Survey, pit trap;?, KS50515, Booti Booti NP, 32°16'S 152°31'E, 17 July 1996, L. Wilkie, Bitou Pilot Study, sand dunes, pit trap;?, KS50516, data as KS50515, 15 July 1996;!, KS60719, Booti Booti NP, 32°14'44"S 152°32'33"E, 9 Oct. 1997, L. Wilkie;?, KS68360, data as KS60719, 12 Nov. 1996, sand dunes, pit trap;?, KS62463, Booti Booti NP, 32°14'28"S 152°32'50"E, 9 Oct. 1997, L. Wilkie, sand dunes, pit trap; 2 !!, KS62178, Macquarie Pass, Macquarie Pass NP, 34°34'S 150°39'E, 12 Sep. 1999, H. Smith, in web on rotting log;?, KS62928, Booderee NP, southern headland of Jervis Bay , 35°08'49"S 150°45'05"E, 20–25 Aug. 1999, L. Gibson, pit trap;?, KS63013, Mount Kembla , Sydney Catchment Authority Reserve , 34°26'33"S 150°44'24"E, 6–10 Dec. 1998, L. Gibson, pit trap;?, KS63067, data as KS63013, 21–25 June 1999;?, KS63171, Royal NP, Sir Bertram Stevens Drive c. 0.3 km E Artillery Hill, 34°04'55"S 151°03'40"E, 6–20 Dec.1999, Gray, Milledge & Smith, STH SYD Hotspots, site 8, pit trap;?, KS63242,Woronora Dam Catchment, Princes Hwy c. 0.1 km NW Southern Freeway Overpass, 34°11'31"S 150°57'58"E, 8–22 Dec. 1999, Gray, Milledge & Smith STH SYD Hotspots, site 11, pit trap; 2 ??, KS69658, KS69663, 2 !!, KS69664–5, Bodalla SF, 8 km NNW Central Tilba near Mt Dromedary turn-off, 36°16'S 150°03'E, 17 Apr. 1978, M.R. Gray, on bank;!, KS69660, Bodalla Forest Park, 9 km S of Bodalla on Princes Highway, 36°10'S 150°06'E, 18 Apr. 1978, M.R. Gray, rotten log, in dry disturbed open forest;!, KS69659, Currawan SF, 35°37'S 150°05'E, 18 Apr. 1978, M.R. Gray;!, KS69661, Mogo SF, 10 km S of Batemans Bay on Princes Highway, 35°48'S 150°08'E, 18 Apr. 1978, M.R. Gray, in webs under rock, open forest, dry and burnt fairly recently;?, KS74067, Mt Warning Camp Ground ,Wallaby Track, 28°24'S 153°16'E, 18 May 1998, H. Smith, retreat in leaf litter, lines to rotting log, collected as juvenile, matured 27 May 1998;?, KS74068, data as KS74067, matured late July 1998;?, KS74071, Kiwarrak State Forest , S of Taree, 31°58'S 152°26'E, Oct. 1976, K.D. Fairy, NSW Forestry Survey material, BPK 76OC J/24 . Queensland:!, S64468 ( QM), nr. Girraween NP, 28°51'S 151°57'E, R. Raven, 7 Apr.1974;!, S64467 ( QM), Gt Dividing Range nr Teviot Brook, 27°27'S 152°33'E, 25 Dec. 1974, R. Raven, 2,700 ft, sclerophyll .

Diagnosis. Differs from C. diehappy as follows: Palpal RVTA with stalk of moderate length; RDTA a thick, distally hooked process; MA processes small, subequal in size. Epigynal septum widened at middle; paired fossae with short lateral extensions.

Description

Male (holotype). BL 5.93, CL 2.95 (range 2.78–3.47), CW 2.22, CapW 1.09, EGW 0.83, LL 0.40, LW 0.40, SL 1.45, SW 1.24. Legs: 1423 (I: 11.82; II: 9.42; III: 8.40; IV: 10.98); ratio tibia I length:CW = 1:0.73. Male palp ( Fig. 6a,b ). RVTA stalk longer than in C. diehappy ; RDTA thick, curved and hook-like distally. Distal loop of sperm duct U-shaped with parallel limbs. Embolus a basally wide, curved rod with a subapical barb ( Fig. 2b ). MA processes subequal, lateral process usually membraneous.

Female (KS74066). BL 6.40, CL 2.95 (range 2.24–3.47), CW 1.85, CapW 1.35, EGW 0.90, LL 0.41, LW 0.43, SL 1.41, SW 1.23. Legs: 1423 (I: 9.89; II: 8.13; III: 7.16; IV: 9.25); ratio tibia I length:CW = 1:0.73. Epigynum ( Fig. 6c,d ). Median septum widest at middle. Paired fossae with relatively short lateral extensions (cf. C. diehappy ). Internal genitalia with very short copulatory ducts, about as wide as spermathecae.

Distribution. South-eastern New South Wales to the Border Ranges area of NSW and southeast Queensland.

Etymology. The specific name refers to Kioloa State Forest, a collection site.

Figures

Fig.1. Couranga kioloa: a,d,f, female:(a), body, dorsal; (d,f), female carapace:d, lateral; f, frontal showing chilum.(b,c,e), male carapace: b, dorsal; c, lateral; e, frontal. Scale lines 1.0 mm: left, a–d; right, e,f.

Fig. 2. Male palps.a–d, Couranga kioloa (KS69663): (a), cymbium and bulb, ventral; (b), distal conductor and embolus (barb on subapical embolus arrowed); (c), tibia, retrolateral; (d), trichobothria on cymbium. (e–g), Karriella treenensis (KS14702): e, tibia, cymbium and bulb, ventral; f, conductor and bipartite median apophysis, proventral; g, RDTA, dorsal. (h,i), Jamberoo johnnoblei (KS8503): h, tibia, cymbium and bulb, ventral; i, bipartite MA processes, retrolateral.

Fig. 6. Couranga kioloa. (a,b), male palp (holotype): a, ventral; b, retrolateral. (c,d), epigynum: c, ventral (KS74064); d, dorsal—internal genitalia (KS69664). Scale lines 0.5 mm: upper, a,b; lower, c,d.

Fig. 8. Distribution records: (a), Jamberoo spp.: J. johnnoblei, d; J. boydensis, h; J. actensis, p; J. australis, s. (b), Couranga spp.: C. kioloa, d; C. diehappy, h. (c), Karriella spp.: K. treenensis, N; K. walpolensis, s. (d), Elleguna spp.: E. major, n; E. minor, d. (e), Asmea spp.: A. akrikensis, p; A. hayllari, s; A. capella, h; A. mullerensis, N.