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



            Male (PBI_OON 5889). Total length 1.26. CEPHALOTHORAX: Carapace olive-green, with dark brown egg-shaped patches behind eyes, ovoid 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 without extension or projections, posterolateral surface without spikes, surface of elevated portion of pars cephalica finely reticulate, sides strongly reticulate, thorax without depressions, fovea absent, without radiating rows of pits; lateral margin straight, 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 light, needle-like. Clypeus margin unmodified, straight 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, posterior eye row from above very slightly procurved but mostly straight, ALE largest, all eyes circular; 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, yellow, uniform, 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, anterior margin unmodified, 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; setae sparse, light, needle-like, evenly scattered, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium yellow. Chelicerae straight, anterior face unmodified; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae light; paturon distal region unmodified, inner margin unmodified. Labium elongated hexagon, not fused to sternum, anterior margin indented at middle, same as sternum in sclerotization; with 6 or more setae on anterior margin, subdistal portion with unmodified setae. Endites distally not excavated, anteromedian tip unmodified, posteromedian part unmodified, same as sternum in sclerotization. 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. Posterior spiracles 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, olive-green, 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. Epigastric scutum weakly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum weakly sclerotized, yellow, short, almost rectangular, covering about 2/3 of abdominal length, fused to epigastric scutum, anterior margin unmodified, without posteriorly directed lateral apodemes. Spinneret scutum absent. 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. Colulus absent. LEGS: pale orange, without color pattern; femur IV not thickened, same size as femora I-III, patella plus tibia I near as long as carapace. Leg spination (only surfaces bearing spines listed, all spines longer than segment width): femora: I, II p0-0-2; tibiae: I p2-2-0; v2-2-0; II p2-1-1; v2-1-1; metatarsi: I, II p1-1-0; v1-1-0; (leg I: spines on femora less than leg segment width, spines on tibia and metatarsus longer than segment width, leg II: spines on femora less than leg segment width, spines on tibia and metatarsus longer than segment width. ). Tarsi I to IV superior claws tooth not examined in detail. Trichobothria examined with Compound microscope; tibia: I three, II three; metatarsus: I one, II one; base rounded. GENITALIA: Epigastric region with sperm pore large, circular, situated at level of anterior spiracles, unmodified; furrow without setae. Palp normal size, strongly sclerotized, right and left palps symmetrical, proximal segments dark red-brown; embolus dark; trochanter normal size, with ventral projection; femur normal size, shorter than trochanter, attaching to patella basally; patella about as long as femur, not enlarged, setae unmodified; tibia trichobothria with 1 trichobothrium; 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, with distal patch of setae; bulb dark red-brown, more than 2 times as long as cymbium, stout, tapering apically.
Ischnothyreus darwini, male chelicerae, anterior view (image by KE, specimen ID: ---05889)

ischndarwimdchea05889KE.tif

Ischnothyreus darwini, male chelicerae, posterior view (image by KE, specimen ID: ---05889)

ischndarwimdcheT05889KE.tif

Ischnothyreus darwini, male palp, dorsal view (image by KE, specimen ID: ---05889)

ischndarwimdpald05889KE.tif

Ischnothyreus darwini, male palp, prolateral view (image by KE, specimen ID: ---05889)

ischndarwimdpalp05889KE.tif

Ischnothyreus darwini, male palp, retrolateral view (image by KE, specimen ID: ---05889)

ischndarwimdpalr05889KE.tif

Ischnothyreus darwini, male carapace, anterior view (image by KE, specimen ID: ---05889)

ischndarwimpcara05889KE.tif

Ischnothyreus darwini, male habitus, dorsal view (image by KE, specimen ID: ---05889)

ischndarwimphabd05889KE.tif

Ischnothyreus darwini, male habitus, lateral view (image by KE, specimen ID: ---05889)

ischndarwimphabl05889KE.tif

Ischnothyreus darwini, male habitus, ventral view (image by KE, specimen ID: ---05889)

ischndarwimphabv05889KE.tif

Ischnothyreus darwini, male sternum, ventral view (image by KE, specimen ID: ---05889)

ischndarwimpstev05889KE.tif


            Female (PBI_OON 5892). Total length 1.34. As in male except as noted. CEPHALOTHORAX: Carapace without any pattern, broadly oval in dorsal view, pars cephalica slightly elevated in lateral view, anteriorly narrowed to between 0.5 and 0.75 times its maximum width, surface of elevated portion of pars cephalica smooth; non-marginal pars cephalica setae dark; marginal setae dark. Clypeus setae dark. Eyes PME oval, PLE oval. Sternum pale orange; setae dark. Female palp spines absent; tarsus unmodified. ABDOMEN: cylindrical, pointed posteriorly; dorsum soft portions pale orange. Pedicel scutum not extending far dorsal of pedicel. Dorsal scutum covering 1/2 to 3/4 of abdomen, between 1/4 and 1/2 abdomen width. Epigastric scutum without lateral joints. Postepigastric scutum pale orange, widely hexagonal, covering about 1/3 of the abdominal length, not fused to epigastric scutum. Dorsum setae serrate. Epigastric area frontal setae thickened, light, serrate. Postepigastric area setae serrate. Dense patch of setae anterior to spinnerets present. LEGS: Leg spination (only surfaces bearing spines listed, all spines longer than segment width): femora: I p0-0-2; II p0-0-1; tibiae: I p2-2-0; r2-2-0; II p2-1-0; r2-1-0; metatarsi: I, II p1-1-0; r1-1-0. Trichobothria examined with Compound microscope.
Ischnothyreus darwini, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---05892)

ischndarwifdepiv05892KE.tif

Ischnothyreus darwini, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---05892)

ischndarwifpepiv05892KE.tif

Ischnothyreus darwini, female habitus, dorsal view (image by KE, specimen ID: ---05892)

ischndarwifphabd05892KE.tif

Ischnothyreus darwini, female habitus, lateral view (image by KE, specimen ID: ---05892)

ischndarwifphabl05892KE.tif

Ischnothyreus darwini, female habitus, ventral view (image by KE, specimen ID: ---05892)

ischndarwifphabv05892KE.tif

 

DISTRIBUTION

AUSTRALIA
Ischnothyreus darwini 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 darwini, 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 00025693  AUSTRALIA  Northern Territory    Mary River National Park, Bryan Creek monsoon patch  1 Adult Male  Paratype    -12.66083; 131.78194  monsoon rainforest, rotted log litter  25 Apr 2008  K. Edward & P. Cullen  WAMP 
PBI_OON 00025703  AUSTRALIA  Northern Territory    Howard Springs National Park, forest walk trail  1 Adult Female  Paratype    -12.45750; 131.05194  spring fed creek, moist litter  09 May 2008  K. Edward & P. Cullen  WAMP 
PBI_OON 00005992  AUSTRALIA  Northern Territory    Mt Brockman, Radon Ck  1 Adult Female      -12.75000; 132.88330  wet rainforest, Leaf Litter  14 Jul 1979  G. Monteith  QM 
PBI_OON 00025700  AUSTRALIA  Northern Territory    Umbrawarra Gorge, gorge walk  1 Adult Male  Paratype    -13.96583; 131.69388  spring fed creek, moist litter  03 May 2008  K. Edward & P. Cullen  MNT 
PBI_OON 00025697  AUSTRALIA  Northern Territory    Kakadu National Park, Mary River Area, between kambolgie and yirimikmik tracks  1 Adult Female  Paratype    -13.50833; 132.42500  spring fed creek, moist litter  02 May 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00005970  AUSTRALIA  Northern Territory    Kakadu National Park, Sth Alligator River area, Gu-ngarre monsoon forest walk  4 Mixed  Paratype    -12.67777; 132.48916  monsoon rainforest, moist litter  24 Apr 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00025692  AUSTRALIA  Northern Territory    Mary River National Park, Bryan Creek monsoon patch  1 Adult Female  Paratype    -12.66083; 131.78194  monsoon rainforest, rotted log litter  25 Apr 2008  K. Edward & P. Cullen  WAMP 
PBI_OON 00025704  AUSTRALIA  Northern Territory    Howard Springs National Park, forest walk trail  1 Adult Male  Paratype    -12.45750; 131.05194  spring fed creek, moist litter  09 May 2008  K. Edward & P. Cullen  WAMP 
PBI_OON 00023651  AUSTRALIA  Northern Territory    Fish River Station, F 26, Heath woodland on sandstone  2 Adult Female      -14.04750; 130.76638  riparian monsoon forest, litter  22 Apr 2012  R. Whyte  QM 
PBI_OON 00005965  AUSTRALIA  Northern Territory    Radon Ck  1 Adult Female      -12.75000; 132.88330  dry rainforest, Leaf Litter  14 Nov 1979  R.J. Raven  QM 
PBI_OON 00025699  AUSTRALIA  Northern Territory    Umbrawarra Gorge, gorge walk  1 Adult Female  Paratype    -13.96583; 131.69388  spring fed creek, moist litter  03 May 2008  K. Edward & P. Cullen  MNT 
PBI_OON 00025696  AUSTRALIA  Northern Territory    Kakadu National Park. Mary River Area, boulder creek walk  1 Adult Male  Paratype    -13.52527; 132.45361  monsoon rainforest, moist litter  01 May 2008  K. Edward & P. Cullen  WAMP 
PBI_OON 00025702  AUSTRALIA  Northern Territory    Litchfield National Park, Wangi falls  1 Adult Female  Paratype    -13.15250; 130.68416  spring fed creek, moist litter  07 May 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00005969  AUSTRALIA  Northern Territory    Howard Springs National Park, forest walk trail  6 Mixed  Paratype    -12.45750; 131.05194  spring fed creek, rotted log litter  09 May 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00005971  AUSTRALIA  Northern Territory    Kakadu National Park. Mary River Area, boulder creek walk  9 Mixed  Paratype    -13.52527; 132.45361  spring fed creek, moist litter  01 May 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00005889  AUSTRALIA  Northern Territory    Mary River National Park, Bryan Creek monsoon patch  1 Adult Male  Holotype    -12.66083; 131.78194  rainforest, under logs  25 Apr 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00005967  AUSTRALIA  Northern Territory    North Point, Kapalga  2 Juvenile sex unknown    -12.41666; 132.36666  rainforest, Leaf Litter  11 Nov 1979  R.J. Raven  QM 
PBI_OON 00025695  AUSTRALIA  Northern Territory    Kakadu National Park. Mary River Area, boulder creek walk  1 Adult Female  Paratype    -13.52527; 132.45361  monsoon rainforest, moist litter  01 May 2008  K. Edward & P. Cullen  WAMP 
  AUSTRALIA  Northern Territory    Kakadu National Park, Mary River Area, between kambolgie and yirimikmik tracks  4 Mixed      -13.50833; 132.42500  spring fed creek, moist litter  02 May 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00005892  AUSTRALIA  Northern Territory    Mary River National Park, Bryan Creek monsoon patch  1 Adult Female  Paratype    -12.66083; 131.78194  monsoon rainforest, rotted log litter  25 Apr 2008  K. Edward & P. Cullen  MNT 
PBI_OON 00005891  AUSTRALIA  Northern Territory    Mary River National Park, Bryan Creek monsoon patch  1 Adult Male  Paratype    -12.66083; 131.78194  monsoon rainforest, rotted log litter  25 Apr 2008  K. Edward & P. Cullen  WAMP 
PBI_OON 00005968  AUSTRALIA  Northern Territory    Mary River National Park, Bryan Creek monsoon patch  4 Mixed  Paratype    -12.66083; 131.78194  spring fed creek, moist litter  25 Apr 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00005884  AUSTRALIA  Northern Territory    South Alligator Inn  3 Mixed    -12.66666; 132.50000  rainforest, under logs  10 Nov 1979  R.J. Raven  QM 
  AUSTRALIA  Northern Territory    Umbrawarra Gorge, gorge walk  4 Mixed      -13.96583; 131.69388  spring fed creek, moist litter  03 May 2008  K. Edward & P. Cullen  MNT 
PBI_OON 00025698  AUSTRALIA  Northern Territory    Kakadu National Park, Mary River Area, between kambolgie and yirimikmik tracks  1 Adult Male  Paratype    -13.50833; 132.42500  spring fed creek, moist litter  02 May 2008  K. Edward & P. Cullen  NTM 
PBI_OON 00025691  AUSTRALIA  Northern Territory    Kakadu National Park, Sth Alligator River area, Gu-ngarre monsoon forest walk  1 Adult Female  Paratype    -12.67777; 132.48222  monsoon rainforest, leaf litter around decaying tree trunk  24 Apr 2008  K. Edward & P. Cullen  NTM 


 
 
 
 
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