Ischnothyreus corniculatum, 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: 77-81

publication ID

http://doi.org/ 10.1206/865.1

persistent identifier

http://treatment.plazi.org/id/E466E016-FFE6-FFEC-FF67-7F723D6EFD69

treatment provided by

Felipe

scientific name

Ischnothyreus corniculatum
status

new species

Ischnothyreus corniculatum   , new species Figures 45–46 View Fig View Fig , map 6

TYPES: AUSTRALIA: Queensland: Male holotype, female allotype and three female paratypes from Herberton Range State Forest, Forestry track, 17.27111 ° S, 145.42277 ° E (23 Apr. 2009, K. Edward and P. Cullen), deposited in QM (³ holotype: QM S95945 View Materials , PBI _ OON 00005611; ♀ allotype and paratypes: QM S95946 View Materials , PBI _ OON 00026309) GoogleMaps   .

ETYMOLOGY: The specific epithet is the Latin corniculatum   meaning ‘‘little horn’’ ( Brown, 1956), and refers to the small hornshaped process on the distal tip of the male palp.

DIAGNOSIS: Like I. cornuatus   , sp. nov., the male of this species possesses a hornlike modification on the embolic region of the male pedipalp. However, I. corniculatum   , sp. nov., has two small lateral processes and only one dorsal hornlike process, instead of two (fig. 46 A, B). The epigynal atrium of the female epigynal region is not paired, and exists as a wide, but short depression that is heavily sclerotized around the posterior edge (figs. 45J, 46F).

MALE (PBI_OON 5611, figs. 45A–C, G–I, 46A–E). Total length 1.53. CEPHALOTHO- RAX: 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 strongly reticulate, sides strongly reticulate. Clypeus margin unmodified, curved downward in front view, high, ALE separated from edge of carapace by their radius or more; setae dark. Eyes: ALE largest, ALE oval, PME circular, PLE oval; posterior eye row straight from above; ALE touching, ALE-PLE touching. Sternum as long as wide, pale orange, darker anteriorly near labium forming unique pattern (fig. 45H, I); setae dark, evenly scattered. Chelicerae, endites, and labium dark redbrown. Chelicerae straight, anterior face unmodified; promargin with one larger denticle; fang shape normal, without prominent basal process; setae dark. Labium elongated hexagon, not fused to sternum, anterior margin indented at middle, much more heavily sclerotized than sternum, with six or more setae on anterior margin. Endites anteromedian tip with one strong, toothlike projection, much more heavily sclerotized than sternum. ABDOMEN: Ovoid; dorsum soft portions white. Book lung covers elliptical. Dorsal scutum yellow-brown, covering 1/2 to 3/4 of abdomen, more than 1/2 to most of abdomen width, middle surface finely reticulate, sides finely reticulate. 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 p0-2-0; 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 with one posteriorly directed hornlike process and two small lateral processes (fig. 46A, B).

FEMALE (PBI_ OON 26309 View Materials , figs. 45D–F, J, 46F). Total length 1.50. CEPHALOTHO- RAX: Carapace pars cephalica slightly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less. Chelicerae, endites, and labium pale orange. ABDOMEN: Dorsal scutum 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; r0-1-1; II p0-1-0; r0-1-0; tibiae: I, II p2-2-0; v2-2-0; metatarsi: I, II p1- 1-0; v1-1-0; spines on retrolateral side much smaller than prolateral side. GENITALIA: Ventral view: epigynal atrium wider than high, sclerotization heavier around curved posterior edge; convoluted duct thicker than apodemes (figs. 45J, 46F).

OTHER MATERIAL EXAMINED: AUS- TRALIA: Queensland: 2 km E of South Johnstone Forestry Camp , 17.60000 ° S, 146.00000 ° E, Dec. 1, 1993, to Feb. 25, 1994 (J. Hasenpusch, QM S63216 View Materials , PBI _ OON 22037 View Materials ), 1 ♀ GoogleMaps   ; Boulder Creek, via Tully , rainforest, leaf litter, 17.83333 ° S, 145.90000 ° E, Oct. 27, 1983 (G. Monteith, D. Yeates, G. Thompson, QM S16024 View Materials , PBI _ OON 25798 View Materials ), 1 ³ GoogleMaps   ; Downey Creek , 25 km SE Millaa Millaa, 400 m, 17.65000 ° S, 145.78330 ° E, Dec. 7, 1988 (G. Monteith, G. Thompson, QM S31962 View Materials , PBI _ OON 21746 View Materials ), 1 ♀ GoogleMaps   ; Herberton Range State Forest, Forestry track, rainforest, leaf litter, 17.27111 ° S, 145.42277 ° E, Apr. 23, 2009 (K. Edward and P. Cullen, QM S95947 View Materials , PBI _ OON 5535), 1 ³ GoogleMaps   ; Kenny Road , 850 m, 17.46667 ° S, 145.53330 ° E, Nov. 25, 1994, to Jan. 10, 1995 (G. Monteith, J. Hasenpusch, QM S27980 View Materials , PBI _ OON 21789 View Materials ), 1 ³ GoogleMaps   ; Longlands Gap SF, forest, 17.45500 ° S, 145.47420 ° E, July 23–Nov. 26, 1992 (R. Raven, P. Lawless, E. Lawless, M. Shaw, QM S19940 View Materials , PBI _ OON 25927 View Materials ), 1 ³, 1 ♀ GoogleMaps   ; Malaan SF, rainforest, 17.58834 ° S, 145.60750 ° E, Nov. 26, 1992, to Apr. 15, 1993 (R. Raven, P. Lawless, QM S24383 View Materials , PBI _ OON 21735 View Materials ), 1 ³ GoogleMaps   ; Malaan SF, rainforest, 1000 m, 17.58333 ° S, 145.58330 ° E, Apr. 20–24, 1978 (R. Raven, V. Davies, QM S16126 View Materials , PBI _ OON 25796 View Materials ), 4 ³ GoogleMaps   ; Malaan SF, rainforest, 1000 m, 17.58333 ° S, 145.58330 ° E, Apr. 20–24, 1978 (R. Raven, V. Davies, QM S16126 View Materials , PBI _ OON 25915 View Materials ), 3 ³ GoogleMaps   ; McNamee Creek , rainforest, leaf litter, 400 m, 17.63333 ° S, 145.8500 ° E, July 8, 1971 (Taylor and Feehan, ANIC, PBI _ OON 25848 View Materials ), 2 ³ GoogleMaps   ; Mount Fisher, 7 km SW Millaa Millaa, Kjellberg Road , 1000 m, 17.55000 ° S, 145.56670 ° E, May 3, 1983 (G. Monteith, D. Yeates, QM S16097 View Materials , PBI _ OON 25800 View Materials ), 1 ³ GoogleMaps   ; Mount Fisher, 7 km SW Millaa Millaa, Kjellberg Road , 1000 m, 17.55000 ° S, 145.56670 ° E, May 3, 1983 (G. Monteith, D. Yeates, QM S16091 View Materials , PBI _ OON 26241 View Materials ), 2 ♀ GoogleMaps   ; Mount Fisher, Kjellberg Road , 1000 m, 17.53333 ° S, 145.55000 ° E, Dec. 1, 1993, to Feb. 25, 1994 (J. Hasenpusch, QM S34940 View Materials , PBI _ OON 21947 View Materials ), 1 ³ GoogleMaps   ; Palmerston National Park , rainforest, 670 m, 17.58834 ° S, 145.70000 ° E, Nov. 30, 1992, to Apr. 15, 1993 (R.J. and S. Raven, P. and E. Lawless, QM S22948 View Materials , PBI _ OON 25919 View Materials ), 1 ³ GoogleMaps   ; Palmerston National Park , rainforest, 670 m, 17.58834 ° S, 145.70000 ° E, July 25–Nov. 30, 1992 (R. Raven, P. Lawless, E. Lawless, M. Shaw, QM S21922 View Materials , PBI _ OON 25931 View Materials ), 1 ³ GoogleMaps   ; Palmerston National Park, Downey Creek Road, rainforest, 17.60500 ° S, 145.76670 ° E, July 25–Nov. 30, 1992 (R. Raven, P. Lawless, M. Shaw, QM S24238 View Materials , PBI _ OON 21705 View Materials ), 2 ³ GoogleMaps   ; Palmerston National Park, Downey Creek Road, rainforest, 17.60500 ° S, 145.76670 ° E, Oct. 30, 1991, to July 24, 1992 (R. Raven, P. Lawless, M. Shaw, QM S24577 View Materials , PBI _ OON 21708 View Materials ), 2 ♀ GoogleMaps   ; the Millstream , 10 km NNE Ravenshoe, 1040 m, 17.53333 ° S, 145.51670 ° E, Dec. 6, 1998, to Feb. 5, 1999 (G. Monteith, D. Cook, QM S49225 View Materials , PBI _ OON 22202 View Materials ), 1 ³, 1 ♀ GoogleMaps   ; Tully Gorge National Park , rainforest, leaf litter, 750 m, 17.7000 ° S, 145.5500 ° E, July 2, 1971 (Taylor and Feehan, ANIC, PBI _ OON 5848), 1 ♀ GoogleMaps   ; Upper Boulder Creek , 8 km N of Tully, 250 m, Dec. 4–7, 1989 (G. Monteith, G. Thompson, H. Janetzki, QM S46824 View Materials , PBI _ OON 22027 View Materials ), 1 ♀   ; Upper Boulder Creek, Walter Hill Range , 950 m, 17.83333 ° S, 145.90000 ° E, Nov. 17–18, 1984 (V. Davies, G. Monteith, J. Gallon, D. Cook, G. Thompson, QM S12923 View Materials , PBI _ OON 6434), 1 ♀ GoogleMaps   ; Wooroonooran National Park, Tchupala Falls track, rainforest, leaf litter, 17.61000 ° S, 145.77722 ° E, Apr. 27, 2009 (K. Edward and P. Cullen, QM S95948 View Materials , PBI _ OON 5566), 1 ♀ GoogleMaps   ; Wooroonooran National Park, Tchupala Falls track, rainforest, leaf litter, 17.61000 ° S, 145.77722 ° E, Apr. 27, 2009 (K. Edward and P. Cullen, QM S95949 View Materials , PBI _ OON 26306 View Materials ), 1 ♀ GoogleMaps   ; Wooroonooran National Park, Tchupala Falls track, rainforest, leaf litter, 17.61000 ° S, 145.77722 ° E, May 17, 2007 (K. Edward and K. Pitz, QM S95950 View Materials , PBI _ OON 26312 View Materials ), 1 ♀ GoogleMaps   .

DISTRIBUTION: This species is only known from the Atherton Tablelands (AU) and the Cairns-Cardwell Lowlands (CC), of the Wet Tropics Bioregion, in northeastern Queensland (map 6).

QM

Queensland Museum

ANIC

Australian National Insect Collection