Ischnothyreus stauntoni, Edward & Harvey, 2014

Edward, Karen L. & Harvey, Mark S., 2014, Australian Goblin Spiders Of The Genus Ischnothyreus (Araneae, Oonopidae), Bulletin of the American Museum of Natural History 2014 (389), pp. 1-144 : 106-110

Ischnothyreus stauntoni , new species Figures 62–63 , map 10

TYPES: AUSTRALIA: Queensland: Male holotype and female allotype from Tam O’Shanter National Park, Licuala Fan Palm walk, 17.915 ° S, 146.06833 ° E (7 May 2009, K. Edward and P. Cullen), deposited in QM (³ holotype: QM S95978 , PBI _ OON 00005545 ; ♀ allotype: QM S95979 , PBI _ OON 00005624 ) .

ETYMOLOGY: The specific epithet is a patronym in honor of Kyran Staunton, the collector of this species and many other interesting invertebrates of the Wet Tropics.

DIAGNOSIS: Male similar to that of I. monteithi , sp. nov., and I. barratus , sp. nov., but differs in a rounded basal bump on the fang (fig. 63C, D), and the palp has a stouter embolic region (fig. 63 A, B). The female epigynal region of this species has a heavily sclerotized round epigynal atrium with a very small triangular process overhanging the anterior section (fig. 63F).

MALE (PBI_OON 5545, figs. 62A–C, G– H, 63A–E). Total length 1.48. CEPHALO- THORAX: Carapace yellow-brown, broadly oval in dorsal view, pars cephalica strongly elevated in lateral view, anteriorly narrowed to between 0.5 and 0.75 times its maximum width, anterolateral corners without extension or projections, surface of elevated portion of pars cephalica finely reticulate, sides strongly reticulate. Clypeus margin unmodified, curved downward in front view, low, ALE separated from edge of carapace by less than their radius; setae dark. Eyes: ALE largest, ALE circular, PME circular, PLE oval; posterior eye row procurved from above; ALE touching, ALE-PLE touching. Sternum longer than wide, pale orange, uniform; setae dark, evenly scattered. Chelicerae, endites, and labium pale orange. Chelicerae straight, anterior face unmodified; promargin with one slightly larger denticle; fang shape normal, with small basal process; setae dark. Labium elongated hexagon, not fused to sternum, anterior margin indented at middle, same as sternum in sclerotization; with six or more setae on anterior margin. Endites distally not excavated, anteromedian tip with one strong, toothlike projection, same as sternum in sclerotization. ABDO- MEN: Ovoid; dorsum soft portions white. Book lung covers elliptical. Dorsal scutum yellow-brown, covering more than 3/4 of abdomen, more than 1/2 to most of abdomen width, middle surface smooth, sides smooth. Epigastric scutum small lateral sclerites present. Postepigastric scutum pale orange, covering about 2/3 of abdominal length. Dorsum, epigastric area, and postepigastric area setae dark. LEGS: Orange, without color pattern; patella plus tibia I shorter than carapace. Leg spination: femora: I p0-2-0; II p0-1-0; tibiae: I, II p2-2-0; v2-2-0; metatarsi: I, II p1-1-0; v1-1-0. GENITALIA: Palp proximal segments dark red-brown; embolus dark; femur shorter than trochanter; patella about as long as femur; cymbium dark redbrown; bulb dark red-brown, more than two times as long as cymbium, stout; embolic region simple, without enlarged or complex processes, stout, distal edge straight, small subdistal transparent membranous structure on dorsal aspect (fig. 63A, B).

FEMALE (PBI_OON 5624, figs. 62D–F, I, 63F). Total length 1.68. CEPHALOTHO- RAX: Carapace pars cephalica slightly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less. Eyes: posterior eye row straight from above. ABDOMEN: Dorsal scutum covering 1/2 to 3/4 of abdomen, between 1/4 and 1/2 abdomen width. Postepigastric scutum widely hexagonal, covering about 1/3 of the abdominal length. LEGS: Leg spination: femora: I p0-2-0; II p0-1-0; tibiae: I, II p2- 2-0; v2-2-0; metatarsi: I, II p1-1-0; v1-1-0. GENITALIA: Ventral view: epigynal atrium circular, small triangular process over anterior edge, heavily sclerotized around epigynal atrium, lateral edges with weaker sclerotization; convoluted duct tightly coiled, stout, thicker than apodemes (figs. 62I, 63F).

OTHER MATERIAL EXAMINED: AUS- TRALIA: Queensland: Atherton Tableland, Japonvale , rainforest, leaf litter, 80 m, 17.71694 ° S, 145.86111 ° E, Mar. 26, 2009 (K. Staunton, QM S95980 , PBI _ OON 5577 ), 1 ♀ ; Bowling Green Bay National Park, Alligator Creek section, rainforest, leaf litter, 19.44055 ° S, 146.94722 ° E, May 5, 2009 (K. Edward and P. Cullen, QM S95981 , PBI _ OON 5549 ), 1 ³ ; Cardwell SF, Murray Falls boardwalk, rainforest, leaf litter, 18.15250 ° S, 145.81777 ° E, May 2, 2009 (K. Edward and P. Cullen, QM S95982 , PBI _ OON 5553 ), 1 ³ ; Clump Mountain National Park, Bicton Hill Track , rainforest, leaf litter, 17.84722 ° S, 146.10027 ° E, May 1, 2007 (K. Edward and K. Pitz, QM S95983 , PBI _OON 25724), 2 ♀ ; Clump Mountain National Park, Bicton Hill Track , rainforest, leaf litter, 17.84722 ° S, 146.10027 ° E, May 1, 2007 (K. Edward and K. Pitz, QM S95984 , PBI _OON 25725), 1 ³ ; Clump Mountain National Park, Rainforest Walk , rainforest, leaf litter, 17.84722 ° S, 146.06611 ° E, May 1, 2007 (K. Edward and K. Pitz, QM S95985 , PBI _ OON 5627 ), 1 ♀ ; Eungella National Park, Sky Window , 21.15000 ° S, 148.50000 ° E (April 24, 1993, M.S. Harvey, B.J. Scott, WAM T66794, PBI _ OON 00004324 ), 1 ³, 3 ♀ ; Girringun National Park, Wallaman Falls area, Banggurru walk, rainforest, leaf litter, 18.61000 ° S, 145.80083 ° E, May 2, 2009 (K. Edward and P. Cullen, QM S95986 , PBI _OON 25844), 3 ³ ; same data ( WAM T130763 ), 1 ³ ; Hinchinbrook Island, Macushla to north Shepherd Beach , rainforest, leaf litter, 18.22138 ° S, 146.22666 ° E, May 3, 2009 (K. Edward and P. Cullen, QM S95987 , PBI _ OON 5551 ), 1 ³ ; Hinchinbrook Island, Macushla to north Shepherd Beach , rainforest, leaf litter, 18.22138 ° S, 146.22666 ° E, May 3, 2009 (K. Edward and P. Cullen, QM S95988 , PBI _OON 25842), 2 ³, 1 ♀ ; Hinchinbrook Island, track to Cape Richards from north Shepherd , rainforest, leaf litter, 18.19916 ° S, 146.22583 ° E, May 3, 2009 (K. Edward and P. Cullen, QM S95989 , PBI _OON 25840), 2 ♀ ; McNamee Creek , rainforest, 400 m, 17.00000 ° S, 145.00000 ° E, July 8, 1971 (Taylor and Feehan, ANIC, PBI _OON 25869), 1 ♀ ; Mission Beach , rainforest, 20 m, 17.52000 ° S, 146.05000 ° E, Jan. 29–Mar. 4, 1996 (M. Cermak, ANIC, PBI _OON 25875), 1 ♀ ; Mount Father Clancy , rainforest, leaf litter, 840 m, 17.58333 ° S, 145.63330 ° E, May 4, 1983 (G. Monteith, D. Yeates, QM S16081 , PBI _OON 25832), 2 ♀ ; Mount Tyson , 2 km W Tully, rainforest, leaf litter, 650 m, 17.91667 ° S, 145.90000 ° E, May 7, 1983 (D.K. Yeates, QM S12974 , PBI _OON 25834), 1 ♀ ; 7 km NW of Paluma , rainforest litter, 18.96700 ° S, 146.15000 ° E (April 20, 1993, M.S. Harvey, B.J. Scott, WAM T78967, PBI _ OON 00004319 ), 2 ♀ ; Paluma Range National Park ; Birthday Creek Falls track, rainforest, leaf litter, 18.98277 ° S, 146.15833 ° E, May 6, 2009 (K. Edward and P. Cullen, QM S95990 , PBI _ OON 5547 ), 1 ³ ; Paluma Range National Park ; Birthday Creek Falls track, rainforest, leaf litter, 18.98277 ° S, 146.15833 ° E, May 6, 2009 (K. Edward and P. Cullen, QM S95991 , PBI _ OON 5628 ), 1 ³ ; Upper Boulder, via Tully , rainforest, leaf litter, 17.83333 ° S, 145.90000 ° E, Oct. 27, 1983 (G. Monteith, D. Yeates, G. Thompson, QM S16808 , PBI _OON 25833), 1 ♀ ; Wooroonooran National Park ; Goldsborough section, Kearneys Falls walking track, rainforest, leaf litter, 17.23722 ° S, 145.77833 ° E, Apr. 25, 2009 (K. Edward and P. Cullen, QM S95992 , PBI _ OON 5537 ), 1 ³, 1 ♀ ; Wooroonooran National Park ; Goldsborough section, Kearneys Falls walking track, rainforest, leaf litter, 17.23722 ° S, 145.77833 ° E, Apr. 25, 2009 (K. Edward and P. Cullen, QM S95993 , PBI _ OON 5625 ), 1 ³ ; Wooroonooran National Park ; the boulders, start of Goldsborough track, rainforest, leaf litter, 17.33888 ° S, 145.86694 ° E, Apr. 24, 2009 (K. Edward and P. Cullen, QM S95994 , PBI _OON 25845), 2 ♀ .

DISTRIBUTION: This species is found within the southern section of Wet Tropics Bioreigon, from Atherton Uplands, Hinchinbrook Island, south to Elliot Uplands, in northeastern Queensland (map 10).

Figures

Fig. 62. Ischnothyreus stauntoni, sp. nov. Holotype male (PBI_OON 00005545): A. habitus, dorsal view; B. habitus, ventral view; C. habitus, lateral view; G. carapace, anterior view; H. sternum, ventral view. Allotype female (PBI_OON 00005624): D. habitus, dorsal view; E. habitus, ventral view; F. habitus, lateral view; I. epigynum, ventral view.

Fig. 63. Ischnothyreus stauntoni, sp. nov. Holotype male (PBI_OON 00005545): A. left palp, prolateral view; B. left palp, retrolateral view; C. left chelicerae, anterior view; D. left chelicerae, posterior view; E. left palp, dorsal view. Allotype female (PBI_OON 00005624): F. epigynum, ventral view. Scale lines 5 0.1 mm.