Ischnothyreus ker, 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: 53-57

publication ID

http://doi.org/ 10.1206/865.1

persistent identifier

http://treatment.plazi.org/id/E466E016-FF9E-FF84-FCEB-7F4A3F53FE81

treatment provided by

Felipe

scientific name

Ischnothyreus ker
status

new species

Ischnothyreus ker   , new species Figures 27–28 View Fig View Fig , map 6

TYPES: AUSTRALIA: Queensland: Male holotype, female allotype, and two female paratypes from Bellenden Ker Range , summit TV Station, 17.25883 °S, 145.8548 ° E, 1560 m (28 Aug–8 Oct 1991, G. Monteith, H. Janetzki), deposited in QM (³ holotype: S95935 View Materials , PBI _ OON 00022001; ♀ allotype: QM S95936 View Materials , PBI _ OON 00025753) GoogleMaps   .

ETYMOLOGY: The specific epithet is a noun in apposition, taken from the type locality.

DIAGNOSIS: Males can be distinguished by the presence of a rounded medial scleriotized process on the posterior aspect of the cheliceral fang and lacks any basal process (fig. 28D). The female epigynal region is similar to that of I. comicus   , sp. nov., but differs in the smaller width of the epigynal atrium opening, which is more jelly-bean shaped, and the faint but visible lines running down each side of the convoluted duct (figs. 27I, 28E).

MALE (PBI_ OON 22001 View Materials , figs. 27A–C, G, H, 28A–D). Total length 1.36. CEPHALO- THORAX: Carapace pale orange, broadly oval in dorsal view, pars cephalica slightly 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 finely reticulate, 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 procurved from above; ALE touching, ALE-PLE touching. Sternum longer than wide, pale orange, uniform; setae light, evenly scattered. Chelicerae, endites, and labium pale orange. Chelicerae straight, anterior face unmodified; fang shape normal, with prominent medial process; setae light; promargin with one larger denticle. Labium elongated hexagon, not fused to sternum, anterior margin indented at middle, same as sternum in sclerotization. Endites anteromedian tip with one strong, toothlike projection, same as sternum in sclerotization. ABDOMEN: Ovoid; dorsum soft portions white. Book lung covers round. 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 absent. Postepigastric scutum pale

Map 6. Map of northeastern Queensland, central Wet Tropics Bioregion, showing recorded distributions of Ischnothyreus ker   (Z), I. binorbis   (), I. boonjee   (+) and I. corniculatum   (N). Wet Tropics upland subregions outlined in grey (see map 1).

orange, covering about 2/3 of abdominal length. Dorsum, epigastric area, and postepigastric area setae light. LEGS: White, without color pattern; patella plus tibia I nearly as long as 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. GEN- ITALIA: Palp proximal segments dark redbrown; embolus light; femur one to two times as long as trochanter, without posteriorly rounded lateral dilation; patella shorter than femur; cymbium dark redbrown, without distal patch of setae; bulb dark red-brown, more than two times as long as cymbium, stout; embolic region obtusely bent, slightly bent back toward cymbium, distal tip curved anteriorly, darkened apparent embolus opening positioned distal to thin conductor.

FEMALE (PBI_ OON 25753 View Materials , figs. 27 D–F, I, 28E). Total length 1.50. CEPHALOTHO- RAX: Dorsal scutum covering 1/2 to 3/4 of abdomen, between 1/4 and 1/2 abdomen width. Postepigastric scutum widely hexagonal, only around epigastric furrow. LEGS: Yellow; 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: Ventral view: epigynal atrium slightly wider than high, jelly-bean shaped, lateral edges round- ed, heavily sclerotized processes absent; convoluted duct thicker than apodemes, faint but visible lines running down each side of the convoluted duct (figs. 27I, 28E).

OTHER MATERIAL EXAMINED: AUS- TRALIA: Queensland: Bellenden Ker Range , 0.5 km S Cable tower 7, rainforest, 500 m, 17.26667 ° S, 145.85000 ° E, Nov. 1–7, 1981 (EARTHWATCH/ Qld Museum, QM S27626 View Materials , PBI _ OON 25930 View Materials ), 1 ³ GoogleMaps   ; Bellenden Ker Range , cable tower 3, rainforest, leaf litter, 1054 m, 17.26667 ° S, 145.85000 ° E, Oct. 17–24, 1981 (EARTHWATCH/ Qld Museum, QM S27896 View Materials , PBI _ OON 22156 View Materials ), 2 ³, 1 ♀ GoogleMaps   ; Bellenden Ker Range, Centre Peak Summit , rainforest, leaf litter, 1560 m, 17.26667 ° S, 145.85000 ° E, Oct. 23, 1980 (G. Monteith, QM S12999 View Materials , PBI _ OON 25805 View Materials ), 1 ³ GoogleMaps   ; Bellenden Ker Range , summit TV Station, rainforest, leaf litter, 1560 m, 17.25883 ° S, 145.85480 ° E, Dec. 1, 1998 (G. Monteith, QM S78698 View Materials , PBI _ OON 7143), 1 ♀ GoogleMaps   ; Bellenden Ker Range , summit TV Station, rainforest, 1560 m, 17.25883 ° S, 145.85480 ° E, Nov. 1, 1981 (EARTHWATCH/ Qld Museum, QM S27849 View Materials , PBI _ OON 22148 View Materials ), 1 ♀ GoogleMaps   ; Bellenden Ker Range , summit TV Station, rainforest, leaf litter, 1560 m, 17.25883 ° S, 145.85480 ° E, Oct. 25, 1981 (EARTHWATCH/ Qld Museum, QM S27850 View Materials , PBI _ OON 22149 View Materials ), 1 ♀ GoogleMaps   ; Bellenden Ker Range, Summit TV Station , rainforest, leaf litter, 1560 m, 17.26667 ° S, 145.85000 ° E, Apr. 29– May 2, 1983 (G. Monteith, D. Yeates, QM S16016 View Materials , PBI _ OON 25801 View Materials ), 1 ³ GoogleMaps   ; Bellenden Ker Range, Summit TV Station , rainforest, leaf litter, 1560 m, 17.26667 ° S, 145.85000 ° E, Apr. 29–May 2, 1983 (G. Monteith, D. Yeates, QM S16172 View Materials , PBI _ OON 25803 View Materials ), 1 ♀ GoogleMaps   ; Bellenden Ker Range , Summit TV Station., rainforest, 1560 m, Oct. 1–Dec. 1, 1982 (S. Montague, QM S16092 View Materials , PBI _ OON 25804 View Materials ), 3 ³, 2 ♀   ; Mount Bartle Frere , 0.5 km N Sth Peak summit, rainforest, leaf litter, 17.40000 ° S, 145.81666 ° E, Nov. 6–8, 1981 (EARTHWATCH/ Qld Museum, QM S75931 View Materials , PBI _ OON 22775 View Materials ), 1 ♀ GoogleMaps   ; Mount Bartle Frere, Centre Peak Ridge , rainforest, leaf litter, 17.38333 ° S, 145.81666 ° E, Nov. 7–8, 1981 (EARTHWATCH/ Qld Museum, QM S75930 View Materials , PBI _ OON 22776 View Materials ), 1 ³ GoogleMaps   ; Mount Bartle Frere, Sth Peak summit, rainforest, leaf litter, 17.40000 ° S, 145.81666 ° E, Nov. 6–8, 1981 (EARTHWATCH/ Qld Museum, QM S75928 View Materials , PBI _ OON 22780 View Materials ), 1 ³ GoogleMaps   .

DISTRIBUTION: This species is only known from Mount Bartle Frere and Bellenden Ker Range of the Wet Tropics Bioregion (BK subregion), in northeastern Queensland (map 6).

QM

Queensland Museum