Jamberoo johnnoblei, 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 : 27-30

Jamberoo johnnoblei n.sp.

Figs 2h,i , 3a–j , 4a–g , 5a–c , 8a , 9a–g

Type material. New South Wales: HOLOTYPE:?, KS84009, Mt Keira , 34°24'S 150°51'E, 25 Jan. 1978, M.R. Gray, in log . PARATYPES:!, KS84010, data as holotype;?, KS34756, Clyde Mtn, E of Braidwood, 35°33'S 149°57'E, 10 Sep. 1975, M.R. Gray, open forest web in dry log;?, KS58203, Macquarie Pass, 34°34'S 150°39'E, 12 Sep. 1999, H.M. Smith, in web on rotting log; 5 !!, KS57680, KS59251, KS60710, KS67201, KS84012, data as for KS58203, all reared to maturity between late Sep. and late Dec. 1999;?, KS8643,!, KS84013, Royal National Park , 34°08'S 151°04'E, 2 Dec. 1981, Horseman & Harland, under moss;!, KS60772, as KS8643, Sep. 1997, H.M. Smith, sheet web in rotting log, taken as juvenile, matured Jan. 1998;?, KS60773, as KS8643, Wattamolla Track, 27 Sep. 1997, H.M. Smith .

Other material. New South Wales:!, KS67897, Jamberoo Mtn , 34°40'S 150°43'E, 6 Nov. 1995 , J. Noble;?, KS46335, Brown Mtn , 16 km W of Bemboka, 36°36'S 149°23'E, 16 Apr. 1978 , M.R. Gray, small sheet webs in roadside bank, 800 m;!, KS59252, Macquarie Pass , 34°34'S 150°39'E, 12 Sep.1999 , H.M. Smith, in web on rotting log, matured 30 Sep; abdomen used for SEM;!, KS77021, Bodalla SF, 8 km NNW Central Tilba near Mt Dromedary t.o., 36°16'S 150°03'E, 17 Apr. 1978 , M.R. Gray, on bank;!, KS60771, Mt Keira, 34°24'S 150°51'E, M.R. Gray, in soil bank, abdomen used for SEM;?, KS8503, Mount Wilson , 33°30'S 150°23'E, 28 Oct. 1981 , C. Horseman, under log;!, KS69655, Mt Wilson, Cathedral of ferns, 33°30'S 150°22'E, M.R. Gray, 17 Jan. 1978 ;!, KS34763, data as KS69655, 21 Jan. 1975, M.R. Gray, large sheet web in upturned base of log at cleared edge of rainforest;!, KS75403, Mt Wilson, near Cathedral of Ferns , 33°30'S 150°23'E, 28 July 2001 , M.R. Gray, earth bank, sheet web (matured in captivity 11Aug.2001); 2 !!, KS6468–9, Royal National Park , 34°08'S 151°04'E, 16 Jan. 1981 , M.R. Gray, dry sclerophyll, in large sheet webs up to 40 × 40cm, from sides of fallen logs & stumps;!, KS8332, as KS6468, 14 Oct. 1981, C. Horseman, in bank; 2 !!, KS8725, KS10779, Somersby Falls , 33°24'S 151°17'E, 18 Jan. 1982 , M.R. Gray, under rock, conical sheet web;!, KS55753, Dampier SF, Coomerang Rd , 36°03'57"S 149°47'05"E, 11 Mar.1999 , H.M. Smith; 4 !!, KS9028, KS9030, KS9032, Minnamurra Falls Reserve , 34°38'S 150°44'E, 20 Apr.1982 , C. Horseman;!, KS55754, Monga SF, Link Rd , 35°34'04"S 149°54'14"E, 16 Mar.1999 , H.M. Smith; 2 !!, KS55755–6, data as KS55754, 29 Mar. 1999;!, KS55723, nr Monga , 35°35'S 149°55'E, 30 Mar. 1999 , H.M. Smith;!, KS77023, Mooney Mooney Ck , S of road bridge, 33°31'S 151°12'E, 12 Jan. 1977 , M.R. Gray , small sheet web in log;!, KS55724, 7.5 km S of Nelligen, Mogo SF, 35°43'19"S 150°06'50"E, 29 Mar. 1999 , H.M. Smith & M. Tio , laid egg sac c. 1 May 1999 .

Diagnosis. Separated from J. boydensis and J. australis by the distally “claw-like” appearance of the large sclerotized lateral process of MA; and from J. australis by the presence of an epigynal septum. Differs from the closely related J. actensis by the digitiform shape of the distal cymbium, relatively longer prolateral conductor limb and epigynal fossae narrowest anteriorly.

Description

Male (holotype). BL 7.50, CL 4.17 (range 2.65–4.24), CW 3.08, CapW 1.80, EGW 1.18, LL 0.68, LW 0.68, SL 2.08, SW 1.63. Legs 1243, long (I: 27.00; II: 22.50; III: 16.92;

IV: 20.33); ratio tibia I length:CW = 1:0.43. Male palp ( Fig. 9a,b ). Cymbium apex short digitiform. Bulb subcircular, about as wide as long. Conductor with a short to very short prolateral limb, about a third length of retrolateral limb. TW of moderate size, prolateral. TL basal, prolateral margin rounded to bluntly coniform. Sclerotized lateral MA process large with a strong spiniform “claw”—the curved, terminal spine wide basally and inner surface concave ( Fig. 2i )

Female (KS84010). BL 7.92, CL 3.02 (range 2.81–4.73), CW 2.08, CapW 1.39, EGW 0.94, LL 0.51, LW 0.51, SL 1.43, SW 1.31. Legs: 1423 (I: 12.78; II: 10.20; III: 8.90; IV:

Gray & Smith: Stiphidiid spiders with grate-shaped tapeta 29 10.49); ratio tibia I length:CW = 1:0.65. Epigynum ( Fig. 9c–g ). Fossae narrowest anteriorly. Median septum short, tapering posteriorly before expanding abruptly into a ventral sclerotized knob-like protuberance—note that the latter may vary in shape from the usual rounded to ovoid knob to a thin, keel-like lamina—that is usually placed clearly anterior to the epigastric groove. Internal genitalia with short, curved copulatory ducts and relatively small spermathecae, well separated.

Distribution. Southern and central coast and highlands of New South Wales.

Etymology. The species is named in honour of Mr John S. Noble OM, engineer, conservationist, spider collector and photographer, and a long-time friend of the museum’s Arachnology Section.

Jamberoo boydensis n.sp.

Figs 8a , 10a–f

Type material. New South Wales: HOLOTYPE:?, KS76979, Boyd Plateau , 34°00'S 150°03'E, M.R. Gray, in logs . PARATYPES:!, KS34761, Mt Edwards, Boyd Plateau, 33°50'S 150°00'E, 26 Nov. 1974, M.R. Gray, in log;!, KS34759, data as holotype;!, KS34762, Boyd River crossing, Boyd Plateau, 34°03'S 150°05'E, M.R. Gray, 26 Nov. 1974, under log.!, KS34760, Mt Wiburd , Boyd Plateau, 33°50'S 150°01'E, 5 May 1974, M.R. Gray, eucalypt- Poa assn, webs on logs .

Diagnosis. Differs from other species by the elongate palpal prolateral conductor limb and the relatively long, slender epigynal septum with a small, rounded posterior knob..

Description

Male (holotype). BL 6.86, CL 3.35, CW 2.45, CapW 1.31, EGW 0.94, LL 0.45, LW 0.49, SL 1.57, SW 1.37. Legs: 1423 (I: 14.82; II: 12.45; III: 10.41; IV: 12.65); ratio tibia I length:CW = 1:0.66. Male palp ( Fig. 10a,b ). RVTA with dorsal process prominent. Cymbium apex short digitiform. Bulb ovoid, wider than long. Prolateral conductor limb elongated, much longer than retrolateral limb. TW prolateral to basal and very large. TL retrobasal with prolateral margin rounded. Sclerotized lateral process of MA with small “claw-like” bifurcation apically (much smaller than in J. johnnoblei and J. actensis ).

Female (KS34761). BL 6.29, CL 2.82 (range 2.73–3.31), CW 1.88, CapW 1.18, EGW 0.88, LL 0.41, LW 0.47, SL 1.39, SW 1.21. Legs: 1423 (I: 10.49; II: 8.61; III: 7.59; IV: 9.06); ratio tibia I length:CW = 1:0.72. Epigynum ( Fig. 10c–f ). Median septum long and slender, with a small, rounded knob placed posteriorly near the epigastric groove. Internal genitalia with copulatory ducts looping dorsolaterally to enter the spermathecae posteriorly; spermathecae large, well separated.

Distribution. Known only from the type locality.

Etymology. The name is taken from the type locality.

Figures

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. 3. a–i, Jamberoo johnnoblei (KS55724, female).(a–f), spinnerets:a, spinneret field and spiracle; b, cribellum; c, ALS (LHS); d, PMS (LHS); e, PLS (RHS); f, PLS, apical (RHS). (g–i), tarsal sensillae: g, hair types, ventral; h, tarsal organ; i, trichobothrium and cuticular sculpturing. (j,k), serrate accessory claw setae, tarsus I (arrows): j, J. johnnoblei (Mogo SF, NSW); k, Stiphidion facetum (KS53620).

Fig. 4. a–g, Jamberoo johnnoblei (Royal National Park, NSW): (a–e), body, subadult male; (f,g), eyes, female. a, carapace; b, sternum and mouthparts; c,d, abdomen, dorsal and ventral; e, spinnerets, ventral; f, eye group, anterior; g, PME tapetum. (h–j), Stiphidion facetum, female: h, eyes, left side; i, PME tapetum (Hornsby, NSW); j, PLE tapetum (Jenolan, NSW).

Fig. 5. Jamberoo johnnoblei: (a), sheet web on log, from above (Royal National Park, NSW). (b),

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.

Fig. 9. Jamberoo johnnoblei. (a,b), male palp: a, ventral (holotype); b, retrolateral (KS46335). (c–g), epigynum: c, ventral, d, lateral (KS84010); e,f, plugged and damaged (KS69656); e, ventral; f, lateral; g, dorsal—internal genitalia (KS69656). Scale lines 0.5 mm: upper lines, a,b; lower line, c–g.

Fig. 10. Jamberoo boydensis. (a,b), male palp (holotype): a, ventral; b, retrolateral. (c–f), epigynum: c,d, ventral (KS34761, KS34759); e, lateral (KS34759); f, dorsal—internal genitalia (KS10256). Scale lines 0.5 mm: upper, a,b; lower, c–f.