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OONOPIDAE SPECIES DESCRIPTION
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(Female redundant descriptions removed)
Ischnothyreus crenulatus       Get publication



            Male (PBI_OON 25966). Total length 1.56. CEPHALOTHORAX: Carapace pale orange, with dark brown egg-shaped patches behind eyes, broadly oval in dorsal view, pars cephalica strongly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, with rounded posterolateral corners, posterolateral edge without pits, posterior margin not bulging below posterior rim, anterolateral corners with slightly sclerotized triangular projections, posterolateral surface without spikes, surface of elevated portion of pars cephalica finely reticulate, sides strongly reticulate, thorax without depressions, fovea absent, carapace of fresh specimens olive brown in colour, without radiating rows of pits; lateral margin straight, smooth, without denticles; plumose setae near posterior margin of pars thoracica absent; non-marginal pars cephalica setae light, needle-like, present, scattered; non-marginal pars thoracica setae absent; marginal setae absent. Clypeus margin unmodified, curved downwards in front view, vertical in lateral view, low, ALE separated from edge of carapace by less than their radius, median projection absent; setae present, light, needle-like. Eyes six, well developed, ALE largest, ALE circular, PME circular, PLE oval; posterior eye row straight from above, procurved from front; ALE touching, ALE-PLE touching, PME touching throughout most of their length, PLE-PME touching. Sternum as long as wide, pale orange, darker anteriorly than posteriorly, not fused to carapace, median concavity absent, without radial furrows between coxae I-II, II-III, III-IV, furrow smooth, radial furrow opposite coxae III absent, surface smooth, without pits, microsculpture absent, sickle-shaped structures absent, posterior margin not extending posteriorly of coxae IV, anterior corner unmodified, lateral margin without infra-coxal grooves, distance between coxae approximately equal, extensions of pre-coxal triangles present, lateral margins unmodified, without posterior hump, sternum heavily sclerotised anteriorly near labium forming a unique shape, the inverted T-shaped base of which has a large patch of 26 fine setae; setae sparse, light, needle-like, evenly scattered, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium dark red-brown. Chelicerae slightly divergent, anterior face unmodified; promargin with three or more teeth, retromargin without teeth; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae light, needle-like, evenly scattered; paturon inner margin with scattered setae, distal region unmodified, posterior surface unmodified, promargin unmodified, inner margin with medial denticles, laminate groove absent. Labium elongated hexagon, not fused to sternum, anterior margin indented at middle, much more heavily sclerotized than sternum; with 6 or more setae on anterior margin, subdistal portion with unmodified setae. Endites anteromedian tip with one strong, tooth-like projection, posteromedian part unmodified, much more heavily sclerotized than sternum. ABDOMEN: ovoid, without long posterior extension, rounded posteriorly, inter-scutal membrane rows of small sclerotized platelets absent posteriorly; dorsum soft portions white, without color pattern. Book lung covers large, elliptical, without setae, anterolateral edge unmodified. Posterior spiracles not connected by groove. Pedicel tube short, unmodified, scuto-pedicel region unmodified, scutum extending far dorsal of pedicel, plumose hairs absent, matted setae on anterior ventral abdomen in pedicel area absent, cuticular outgrowths near pedicel absent. Dorsal scutum weakly sclerotized, pale orange, without color pattern, covering more than 3/4 of abdomen, more than 1/2 to most of abdomen width, not fused to epigastric scutum, middle surface smooth, sides smooth, anterior half without projecting denticles, dorsal scutum in fresh specimens olive brown in colour. Epigastric scutum weakly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum weakly sclerotized, pale orange, short, almost rectangular, covering about 3/4 of abdominal length, fused to epigastric scutum, anterior margin unmodified, without posteriorly directed lateral apodemes. Spinneret scutum present, incomplete ring. Dorsum setae present, dark, needle-like. Epigastric area setae uniform, dark, needle-like. Postepigastric area setae present, dark, needle-like. Spinneret scutum with fringe of needle-like setae. Dense patch of setae anterior to spinnerets absent. Interscutal membrane with setae. LEGS: pale orange, without color pattern; femur IV not thickened, same size as femora I-III, patella plus tibia I shorter than carapace. Leg spination (only surfaces bearing spines listed, all spines longer than segment width): 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. Tarsi I to IV superior claws tooth examined in detail; tarsal proclaws and retroclaws inner face striate; tarsus IV superior claws with zero teeth on lateral surface of proclaw, three teeth on median surface of proclaw, zero teeth on lateral surface of retroclaw, three teeth on median surface of retroclaw. Tarsi I to IV without inferior claw. Trichobothria examined with SEM; tibia: each with three; metatarsus: each with one; base longitudinally narrowed, aperture internal texture grate-like, hood covered by numerous low, closely spaced ridges, trichobothrial base of male palp rounded. Tarsal organ with 2 sensilla visible, visible on legs I and IV. GENITALIA: Epigastric region with sperm pore large, triangular with rounded angles, situated in front of anterior spiracles, unmodified; furrow without omega-shaped insertions, without setae. Palp normal size, strongly sclerotized, right and left palps symmetrical, proximal segments dark red-brown; embolus dark, prolateral excavation absent; trochanter normal size, with ventral projection; femur normal size, shorter than trochanter, without posteriorly rounded lateral dilation, attaching to patella basally; patella about as long as femur, not enlarged, without prolateral row of ridges, setae unmodified; tibia trichobothria with 3 trichobothria; cymbium dark red-brown, ovoid in dorsal view, fused with bulb but with clearly defined seam between, not extending beyond distal tip of bulb, plumose setae absent, without stout setae, without distal patch of setae; bulb dark red-brown, more than 2 times as long as cymbium, slender, tapering apically.
Ischnothyreus crenulatus, male palp, dorsal view (image by KE, specimen ID: ---25966)

ischncrenumdpald25966KE.tif

Ischnothyreus crenulatus, male palp, prolateral view (image by KE, specimen ID: ---25966)

ischncrenumdpalp25966KE.tif

Ischnothyreus crenulatus, male palp, retrolateral view (image by KE, specimen ID: ---25966)

ischncrenumdpalr25966KE.tif

Ischnothyreus crenulatus, male chelicerae, anterior view (image by KE, specimen ID: ---25966)

ischncrenumdchea25966KE.tif

Ischnothyreus crenulatus, male chelicerae, posterior view (image by KE, specimen ID: ---25966)

ischncrenumdcheT25966KE.tif

Ischnothyreus crenulatus, male carapace, anterior view (image by KE, specimen ID: ---25966)

ischncrenumpcara25966KE.tif

Ischnothyreus crenulatus, male habitus, dorsal view (image by KE, specimen ID: ---25966)

ischncrenumphabd25966KE.tif

Ischnothyreus crenulatus, male habitus, ventral view (image by KE, specimen ID: ---25966)

ischncrenumphabv25966KE.tif

Ischnothyreus crenulatus, male sternum, ventral view (image by KE, specimen ID: ---25966)

ischncrenumpstev25966KE.tif


            Female (PBI_OON 25754). Total length 1.80. As in male except as noted. CEPHALOTHORAX: Carapace without any pattern, pars cephalica slightly elevated in lateral view, carapace of fresh specimens olive brown in colour. Sternum longer than wide, uniform. Mouthparts: Chelicerae, endites and labium pale orange. paturon inner margin unmodified. Endites distally not excavated, anteromedian tip unmodified. ABDOMEN: Pedicel scutum not extending far dorsal of pedicel. Dorsal scutum dorsal scutum in fresh specimens olive brown in colour. Epigastric scutum small lateral sclerites present, without lateral joints. Postepigastric scutum widely hexagonal, covering about 1/3 of the abdominal length, not fused to epigastric scutum, with short posteriorly directed lateral apodemes. Dense patch of setae anterior to spinnerets present. LEGS: Leg spination (only surfaces bearing spines listed, all spines longer than segment width): 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. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria examined with Compound microscope.
Ischnothyreus crenulatus, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---25754)

ischncrenufdepiv25754KE.tif

Ischnothyreus crenulatus, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---25754)

ischncrenufpepiv25754KE.tif

Ischnothyreus crenulatus, female habitus, dorsal view (image by KE, specimen ID: ---25754)

ischncrenufphabd25754KE.tif

Ischnothyreus crenulatus, female habitus, ventral view (image by KE, specimen ID: ---25754)

ischncrenufphabv25754KE.tif

 

DISTRIBUTION

AUSTRALIA
Ischnothyreus crenulatus coordinates
Click the following link for a map from Discover Life which displays the records below. You can click anywhere on that map to zoom in, and clicking on any point will display the full data for that locality Ischnothyreus crenulatus, Discover Life Map
 

MATERIAL EXAMINED
Order by:    
PBI USI Country State Division Locality Sex Type Status Elevation(m) GPS Coordinate Habitat Collection_Date Collector Inst. Code
PBI_OON 00005556  AUSTRALIA  Queensland    Tully Gorge National Park, start of Rhyolite Pinnacle trail  1 Adult Male      -17.69500; 145.52333  rainforest, Leaf Litter  28 Apr 2009  K. Edward & P. Cullen  QM 
PBI_OON 00025966  AUSTRALIA  Queensland    Mt Hypipamee NP  1 Adult Male  Holotype  950  -17.43333; 145.48330  rainforest, Leaf Litter  05 Oct 1980  G. Monteith  QM 
PBI_OON 00025792  AUSTRALIA  Queensland    Baldy Mountain, SW. of Atherton  4 Mixed    1200  -17.26666; 145.41666  rainforest, Leaf Litter  10 Oct 1980  G. Monteith  QM 
PBI_OON 00026314  AUSTRALIA  Queensland    Herberton Range State Forest, Forestry track  7 Mixed      -17.28805; 145.42722  rainforest, Leaf Litter  24 Apr 2009  K. Edward & P. Cullen  QM 
PBI_OON 00021966  AUSTRALIA  Queensland    Longlands Gap SF  8 Mixed      -17.45500; 145.47420  forest  23 Jul 1992  R. Raven, P. Lawless, E. Lawless, M. Shaw  QM 
PBI_OON 00025789  AUSTRALIA  Queensland    Mt Fisher, 7km SW Millaa Millaa, Kjellberg Rd  1 Adult Female    1000  -17.55000; 145.56670  rainforest, Leaf Litter  03 May 1983  G. Monteith, D. Yeates  QM 
PBI_OON 00005304  AUSTRALIA  Queensland    Mt Hypipamee National Park, 14 km SW Malanda  2 Mixed    950  -17.43333; 145.48333  rainforest, Leaf Litter  24 Jul 1982  Peck, S., Peck, J.  AMNH 
PBI_OON 00021712  AUSTRALIA  Queensland    Palmerston NP (NQ 11b)  3 Mixed    670  -17.58834; 145.70000  rainforest  25 Jul 1992  R. Raven, P. Lawless, E. Lawless, M. Shaw  QM 
PBI_OON 00025788  AUSTRALIA  Queensland    Tully Falls State Forest  3 Mixed      -17.62472; 145.59361  rainforest, Leaf Litter  04 Oct 1978  A. Walford-Huggins  ANIC 
PBI_OON 00025795  AUSTRALIA  Queensland    Baldy Mountain, SW. of Atherton  2 Mixed    1200  -17.26666; 145.41666  rainforest, Leaf Litter  10 Oct 1980  G. Monteith  QM 
PBI_OON 00005563  AUSTRALIA  Queensland    Herberton Range State Forest, Forestry track  4 Mixed      -17.28805; 145.42138  rainforest, Leaf Litter  24 Apr 2009  K. Edward & P. Cullen  QM 
PBI_OON 00025790  AUSTRALIA  Queensland    Lake Barrine  2 Mixed    750  -17.25000; 145.63330  rainforest, Leaf Litter  04 Oct 1980  G. Monteith  QM 
PBI_OON 00022025  AUSTRALIA  Queensland    Millaa Millaa Falls  2 Adult Female    800  -17.46667; 145.60000  rainforest, Leaf Litter  17 May 1995  G. Monteith  QM 
PBI_OON 00005303  AUSTRALIA  Queensland    Mt Hypipamee National Park, 14 km SW Malanda  1 Adult Female    950  -17.43333; 145.48333  rainforest  24 Jul 1982  Peck, S., Peck, J.  AMNH 
PBI_OON 00021669  AUSTRALIA  Queensland    Palmerston NP (NQ 11b)  8 Mixed    670  -17.58834; 145.70000  rainforest  25 Jul 1992  R. Raven, P. Lawless, E. Lawless, M. Shaw  QM 
PBI_OON 00022130  AUSTRALIA  Queensland    Baldy Mt Rd, SW Atherton  3 Mixed    1150  -17.26667; 145.41670  rainforest, Leaf Litter  09 Dec 1988  G. Monteith, G. Thompson  QM 
PBI_OON 00025787  AUSTRALIA  Queensland    Evelyn River, SE Herberton  3 Mixed      -17.53333; 145.33333  rainforest, Leaf Litter  29 Aug 1977  A. Walford-Huggins  ANIC 
PBI_OON 00025794  AUSTRALIA  Queensland    Lake Barrine  2 Adult Female    750  -17.25000; 145.63330  rainforest, Leaf Litter  08 Oct 1980  G. Monteith  QM 
PBI_OON 00022061  AUSTRALIA  Queensland    Maalan Rd,2km S Palmerston H'way  3 Mixed    750  -17.60000; 145.70000  rainforest  26 Nov 1994  G. Monteith, J. Hasenpusch  QM 
PBI_OON 00025754  AUSTRALIA  Queensland    Mt Hypipamee NP  3 Mixed  Paratype  950  -17.43333; 145.48330  rainforest, Leaf Litter  05 Oct 1980  G. Monteith  QM 
PBI_OON 00021670  AUSTRALIA  Queensland    Palmerston NP  6 Mixed    670  -17.58834; 145.70000  rainforest  30 Nov 1992  R.J. & S. Raven, P. & E. Lawless  QM 
PBI_OON 00021765  AUSTRALIA  Queensland    Plath Road  2 Adult Female    1150  -17.37667; 145.46170  rainforest, Leaf Litter  30 Nov 1997  G. Monteith  QM 
PBI_OON 00026313  AUSTRALIA  Queensland    Tully Gorge National Park, start of Rhyolite Pinnacle trail  3 Mixed      -17.69500; 145.52333  rainforest, Leaf Litter  28 Apr 2009  K. Edward & P. Cullen  QM 
PBI_OON 00021793  AUSTRALIA  Queensland    3k W of Bones Knob  1 Adult Male    1140  -17.23333; 145.41670  rainforest  10 Dec 1995  G. Monteith, D. Cook, G. Thompson  QM 
PBI_OON 00025938  AUSTRALIA  Queensland    Boonjee, nr Malanda  1 Adult Male    700  -17.40000; 145.73330  rainforest, Leaf Litter  08 Dec 1988  G. Monteith, G. Thompson  QM 
PBI_OON 00005536  AUSTRALIA  Queensland    Herberton Range State Forest, Forestry track  1 Adult Male      -17.27111; 145.42277  rainforest, Leaf Litter  23 Apr 2009  K. Edward & P. Cullen  QM 
PBI_OON 00021780  AUSTRALIA  Queensland    Maalan Rd,1.5km S Palmerston H'way  1 Adult Female    750  -17.60000; 145.70000  rainforest, Leaf Litter  26 Nov 1994  G. Monteith  QM 
PBI_OON 00025793  AUSTRALIA  Queensland    Mt Hypipamee NP  1 Adult Female    950  -17.43333; 145.48330  rainforest, Leaf Litter  05 Oct 1980  G. Monteith  QM 
PBI_OON 00005555  AUSTRALIA  Queensland    Mt Hypipamee National Park, walking track to crater  1 Adult Female      -17.42361; 145.48500  rainforest, Leaf Litter  29 Apr 2009  K. Edward & P. Cullen  QM 
PBI_OON 00022140  AUSTRALIA  Queensland    Palmerston NP (NQ 11b)  13 Adult Male    670  -17.58834; 145.70000  rainforest  30 Oct 1991  R. Raven, P. Lawless, M. Shaw  QM 


 
 
 
 
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