Ischnothyreus bupariorbis, 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 : 115-119

Ischnothyreus bupariorbis , new species Figures 66–67 , map 12

TYPES: AUSTRALIA: Queensland: Male holotype and female allotype from North Stradbroke Island, ‘‘ Yarraman ,’’ 27.44867 ° S, 153.5167 ° E, 50 m (1 Jan 1900, U. Nolte), deposited in QM (³ holotype: QM S40927 , PBI _ OON 00021970 ; ♀ allotype: QM S96001 , PBI _ OON 00025760 ) .

ETYMOLOGY: The specific epithet derived from the Latin bu, par, and orbis, meaning ‘‘pair of large circles’’ ( Brown, 1956), and refers to large paired circles of the female epigynal region.

DIAGNOSIS: This species can be easily distinguished by the elongate lateral process of the male palp, which is bent retrolaterally, ending with a curved, caplike distal tip (fig. 67A, B). Dorsal scute of both sexes small and covering only 1/2–2/3 of the abdomen length (fig. 66A, D). The female epigynum is characterized by a pair of large epigynal atriums positioned posteriorly to a short convoluted duct (figs. 66I, 67F).

MALE (PBI_OON 00021970, figs. 66A–C, G–H, 67A–E). Total length 1.43. CEPHALO- THORAX: Carapace pale orange, broadly

oval in dorsal view, pars cephalica strongly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, anterolateral corners without extension or projections, surface of elevated portion of pars cephalica smooth, sides finely reticulate. Clypeus margin unmodified, straight in front view, low, ALE separated from edge of carapace by less than their radius; setae dark. Eyes: ALE largest, ALE circular, PME oval, PLE oval; posterior eye row straight from above; ALE touching, ALE-PLE touching. Sternum longer than wide, pale orange, uniform; setae dark, evenly scattered. Chelicerae pale orange, endites, and labium dark red brown. Chelicerae slightly divergent, anterior face unmodified; promargin with one larger denticle; fang shape normal, with small basal process; setae dark. Labium elongated hexagon, not fused to sternum, anterior margin indented at middle, more sclerotized than sternum, with six or more setae on anterior margin. Endites anteromedian tip with one strong, broad toothlike projection, much more heavily sclerotized than sternum. AB- DOMEN: Ovoid; dorsum soft portions white. Book lung covers elliptical. Dorsal scutum pale orange, 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 1/2 of abdominal length. Dorsum, epigastric area, and postepigastric area setae dark. LEGS: Pale orange, without color pattern; patella plus tibia I shorter than carapace. Leg spination: femora: I p0-1-1; 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 red-brown; bulb dark red-brown, more than two times as long as cymbium, stout; embolic region with enlarged and complex processes, obtusely bent, lateral process bent retrolaterally, distal tip caplike (fig. 67A, B).

FEMALE (PBI_OON 25760, figs. 66D–F, I, 67F). Total length 1.53. CEPHALOTHO- RAX: Carapace pars cephalica slightly elevated in lateral view. Chelicerae, endites, and labium pale orange. ABDOMEN: Dorsal scutum covering about 1/2 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 p0-1-1; 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 paired, large, circular, sclerotization uniform; convoluted duct very short, thicker than apodemes (figs. 66I, 67F).

OTHER MATERIAL EXAMINED: AUS- TRALIA: Queensland: Beerwah Forestry Reserve (B3), 26.85000 ° S, 152.95000 ° E, Aug. 25, 1991 (M. Glover, QM S63197 , PBI _OON 22228), 1 ³ ; Canungra , 21 km SSW, IBISCA Plot IQ –900–OF, open forest, fungi and litter, 900 m, 28.21000 ° S, 153.12694 ° E, Jan. 14–19, 2007 (G. Monteith, QM S86444, PBI _OON 26268) ; Dan Dan Scrub ( Site 1), 100 m, 24.16667 ° S, 151.08330 ° E, Dec. 14, 1983 (G. Monteith, V. Davies, J. Gallon, G. Thompson, QM S16090 , PBI _OON 25762), 1 ♀ ; Enoggera Reservoir , site 1, 100 m, 27.43850 ° S, 152.92120 ° E, Dec. 21, 1999, to Jan. 27, 2000 (G. Monteith, J. Holt, QM S57280, PBI _OON 22096), 1 ♀ ; Enoggera Reservoir , site 1, 100 m, 27.43850 ° S, 152.92120 ° E, Jan. 27–Mar. 15, 2000 (G. Monteith, J. Holt, QM S57327 , PBI _OON 22110), 1 ♀ ; Enoggera Reservoir , site 1, 100 m, 27.43850 ° S, 152.92120 ° E, Mar. 15–18, 2000 (G. Monteith, QM S57364 , PBI _OON 22113), 1 ♀ ; Enoggera Reservoir , site 2, 125 m, 27.43800 ° S, 152.91930 ° E, Mar. 15–18, 2000 (G. Monteith, QM S57386 , PBI _OON 22118), 1 ♀ ; Enoggera Reservoir , site 9, 130 m, 27.43833 ° S, 152.90780 ° E, Jan. 27– Mar. 15, 2000 (G. Monteith, J. Holt, QM S57324 , PBI _OON 22076), 1 ♀ ; Enterprise Mine, Blackbutt # 1, 90 m, 27.55383 ° S, 153.45570 ° E, Jan. 8, 2002 (C. Burwell, QM S55563 , PBI _OON 20674), 3 ♀ ; Enterprise Mine, Blackbutt # 2, 60 m, 27.55617 ° S, 153.45100 ° E, Jan. 9, 2002 (Queensland Museum Party, QM S56552 , PBI _ OON 6433 ), 1 ♀ ; Enterprise Mine, Mallee # 1, 120 m, 27.57117 ° S, 153.43670 ° E, Jan. 10, 2002 (C. Burwell, QM S55521, PBI _OON 20663), 1 ³ ; Enterprise Mine, Mallee # 2, 100 m, 27.58733 ° S, 153.43920 ° E, Jan. 10, 2002 (C. Burwell, QM S56239 , PBI _OON 20673), 1 ♀ ; Enterprise Mine, Scribbly Gum # 2, 120 m, 27.60800 ° S, 153.44180 ° E, Jan. 9, 2002 (C. Burwell, QM S55550 , PBI _OON 20675), 2 ♀ ; Ewan Maddock Dam (B/3), 26.80000 ° S, 152.98330 ° E, Oct. 27, 1992, to Jan. 30, 1993 (M. Glover, QM S48856 , PBI _OON 22051), 1 ³ ; Fig Tree Pocket, Brisbane , 27.46667 ° S, 153.05000 ° E, Nov. 5, 1976 (V.E. Davies, QM S16116 , PBI _ OON 5912 ), 1 ³ ; Laidley Creek , 27.51667 ° S, 152.41670 ° E, Apr. 28, 1981 (M. Grant, QM S16009 , PBI _OON 25885), 1 ³ ; Lamington National Park IBISCA, 300 B, rainforest, leaf litter, 300 m, 28.00000 ° S, 153.00000 ° E, Jan. 25, 2008 (S. Wright, A. Nakamura, QM S86453 , PBI _ OON 26266), 1 ♀ ; Mount Coot-tha, Brisbane , 27.47050 ° S, 152.95580 ° E, Nov. 4, 1996, to July 4, 1997 (R.J. Raven, QM S31382 , PBI _OON 21953), 1 ♀ ; Mount Coot-tha, Brisbane , 27.48334 ° S, 152.95000 ° E, Dec. 1– 22, 1979 (R.J. Raven, QM S16202 , PBI _ OON 25941), 4 ³ ; Mudlo Gap , bottom, rainforest, 200 m, 26.16667 ° S, 152.23330 ° E, Dec. 17, 1998, to Jan. 25, 1999 (G. Monteith, C. Gough, QM S57661 , PBI _OON 22240), 1 ♀ ; N Stradbroke Island: ‘‘ Ibis Alpha ,’’ 20 m, 27.63333 ° S, 153.43330 ° E, Jan. 1, 1900 (U. Nolte, QM S40960 , PBI _OON 22032), 1 ³, 1 ♀ ; N Stradbroke Island: ‘‘ Ibis Alpha ,’’ 30 m, 27.63333 ° S, 153.43330 ° E, Jan. 1, 1900 (U. Nolte, QM S40962 , PBI _OON 21969), 1 ³, 1 ♀ ; N Stradbroke Island: ‘‘ Yarraman ,’’ 50 m, 27.44867 ° S, 153.51670 ° E, Jan. 1, 1900 (U. Nolte, QM S40941 , PBI _OON 21958), 1 ♀ .

DISTRIBUTION: This species can be found from Stradbroke Island, Lamington National Park to north of Bundaberg, in northeastern Queensland (map 12).

Figures

Fig. 66. Ischnothyreus bupariorbis, sp. nov. Holotype male (PBI_OON 00021970): A. habitus, dorsal view; B. habitus, ventral view; C. habitus, lateral view; G. carapace, anterior view; H. sternum, ventral view. Allotype female (PBI_OON 00025760): D. habitus, dorsal view; E. habitus, ventral view; F. habitus, lateral view; I. epigynum, ventral view.

Fig. 67. Ischnothyreus bupariorbis, sp. nov. Holotype male (PBI_OON 00021970): 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 00025760): F. epigynum, ventral view. Scale lines 5 0.1 mm.