Australian Goblin Spiders Of The Genus Ischnothyreus (Araneae, Oonopidae)
Edward, Karen L.
Harvey, Mark S.
Bulletin of the American Museum of Natural History
2014
2014-06-06
2014
389
1
144
3Q662
Edward & Harvey, 2014
Edward & Harvey
2014
[787,990,1333,1356]
Arachnida
Oonopidae
Ischnothyreus
Animalia
Araneae
53
53
Arthropoda
species
ker
sp. nov.
ETYMOLOGY: The specific epithet is a noun in apposition, taken from the typelocality.
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, figs. 27A–C, G, H, 28A–D). Total length 1.36. CEPHALO- THORAX: Carapacepale 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. Clypeusmargin 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. Sternumlonger 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, 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 kmS Cabletower 7, rainforest, 500 m, 17.26667 °S, 145.85000 °E, Nov. 1–7, 1981(EARTHWATCH/ Qld Museum, QM S27626, PBI_OON 25930), 1 ³; 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, PBI_OON 22156), 2 ³, 1 ♀; Bellenden Ker Range, Centre Peak Summit, rainforest, leaf litter, 1560 m, 17.26667 °S, 145.85000 °E, Oct. 23, 1980( G. Monteith, QM S12999, PBI_ OON 25805), 1 ³; Bellenden Ker Range, summit TV Station, rainforest, leaf litter, 1560 m, 17.25883 °S, 145.85480 °E, Dec. 1, 1998( G. Monteith, QM S78698, PBI_ OON 7143), 1 ♀; Bellenden Ker Range, summit TV Station, rainforest, 1560 m, 17.25883 °S, 145.85480 °E, Nov. 1, 1981(EARTHWATCH/ Qld Museum, QM S27849, PBI_OON 22148), 1 ♀; 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, PBI_OON 22149), 1 ♀; Bellenden Ker Range, SummitTV Station, rainforest, leaf litter, 1560 m, 17.26667 °S, 145.85000 °E, Apr. 29– May 2, 1983( G. Monteith, D. Yeates, QM S16016, PBI_OON 25801), 1 ³; Bellenden Ker Range, SummitTV Station, rainforest, leaf litter, 1560 m, 17.26667 °S, 145.85000 °E, Apr. 29–May 2, 1983( G. Monteith, D. Yeates, QM S16172, PBI_OON 25803), 1 ♀; Bellenden Ker Range, Summit TV Station., rainforest, 1560 m, Oct. 1–Dec. 1, 1982( S. Montague, QM S16092, PBI_OON 25804), 3 ³, 2 ♀; Mount Bartle Frere, 0.5 kmN Sth Peaksummit, rainforest, leaf litter, 17.40000 °S, 145.81666 °E, Nov. 6–8, 1981(EARTHWATCH/ Qld Museum, QMS75931, PBI_OON 22775), 1 ♀; Mount Bartle Frere, Centre Peak Ridge, rainforest, leaf litter, 17.38333 °S, 145.81666 °E, Nov. 7–8, 1981(EARTHWATCH/ Qld Museum, QMS75930, PBI_OON 22776), 1 ³; Mount Bartle Frere, Sth Peaksummit, rainforest, leaf litter, 17.40000 °S, 145.81666 °E, Nov. 6–8, 1981(EARTHWATCH/ Qld Museum, QMS75928, PBI_OON 22780), 1 ³.
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).
S95935, S95936
1991-08-28
1991-10-08
1991-08-28
QM, PBI
TV Station & G. Monteith & H. Janetzki
Australia
1560
-17.25883
Bellenden Ker Range
5
145.8548
Male
53
53
OON 00022001, OON 00025753
5
2
Queensland
holotype
S27626, OON 25930
1981-11-01
1981-11-07
1981-11-01
QM, PBI
Qld Museum
500
-17.26667
Bellenden Ker Range
1
145.85
57
57
1
Queensland
S27896, OON 22156
1981-10-17
1981-10-24
1981-10-17
QM, PBI
Qld Museum
1054
-17.26667
Bellenden Ker Range
1
145.85
57
57
1
1
Queensland
S12999, OON 25805
1980-10-23
QM, PBI
G. Monteith
1560
-17.26667
Centre Peak Summit
1
145.85
Bellenden Ker Range
57
57
1
Queensland
S78698
1998-12-01
QM, PBI
TV Station & G. Monteith
1560
-17.25883
Bellenden Ker Range
1
145.8548
57
57
OON 7143
1
1
Queensland
S27849, OON 22148
1981-11-01
QM, PBI
TV Station & Qld Museum
1560
-17.25883
Bellenden Ker Range
1
145.8548
57
57
1
1
Queensland
S27850, OON 22149
1981-10-25
QM, PBI
TV Station & Qld Museum
1560
-17.25883
Bellenden Ker Range
1
145.8548
57
57
1
1
Queensland
S16016, OON 25801
1983-04-29
1983-05-02
1983-04-29
QM, PBI
G. Monteith & D. Yeates
Bellenden Ker Range
1560
-17.26667
Station
1
145.85
Summit
57
57
1
Queensland
S16172, OON 25803
1983-04-29
1983-05-02
1983-04-29
QM, PBI
G. Monteith & D. Yeates
Bellenden Ker Range
1560
-17.26667
Station
1
145.85
Summit
57
57
1
1
Queensland
S16092, OON 25804
1982-10-01
1982-12-01
1982-10-01
QM, PBI
Summit TV Station. & S. Montague
1560
Bellenden Ker Range
57
57
2
2
Queensland
S75931, OON 22775
1981-11-06
1981-11-08
1981-11-06
QM, PBI
Qld Museum
-17.4
Mount Bartle Frere
1
145.81667
57
57
1
1
Queensland
S75930, OON 22776
1981-11-07
1981-11-08
1981-11-07
QM, PBI
Qld Museum
-17.38333
Centre Peak Ridge
1
145.81667
Mount Bartle Frere
57
57
1
Queensland
S75928, OON 22780
1981-11-06
1981-11-08
1981-11-06
QM, PBI
Qld Museum
-17.4
Sth Peak
1
145.81667
Mount Bartle Frere
57
57
1
Queensland