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



            Male (PBI_OON 5888). Total length 1.65. CEPHALOTHORAX: Carapace brown, 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 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, smooth, without denticles; plumose setae near posterior margin of pars thoracica absent; non-marginal pars cephalica setae dark, 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, dark, 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 longer than wide, pale orange, uniform, not fused to carapace, median concavity absent, without radial furrows between coxae I-II, II-III, III-IV, 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, dark, needle-like, densest laterally, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium labium and endites dark red brown, chelicerae pale. Chelicerae slightly divergent, anterior face unmodified; promargin with three or more teeth, retromargin without teeth; fangs without tooth-like projections, directed medially, dorsoventrally flattened and strongly bent medially, with prominent basal process, tip unmodified; setae dark, 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, brown, 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 present. Postepigastric scutum weakly sclerotized, pale orange, short, almost rectangular, covering about 2/3 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 absent. Spinneret scutum with fringe of needle-like setae. Dense patch of setae anterior to spinnerets absent. Interscutal membrane with setae. LEGS: orange-brown, 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. Trichobothria examined with Compound microscope; tibia: each with three; metatarsus: each with one. GENITALIA: Epigastric region with sperm pore large, triangular with rounded angles, situated at level of anterior spiracles, unmodified; furrow with pair of omega-shaped insertions, 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, one to two times as long as 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 2 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, 1 to 1.5 times as long as cymbium, stout, tapering apically.
Ischnothyreus rixi, male palp, retrolateral view (image by KE, specimen ID: ---05888)

ischnrixi9mdpalr05888KE.tif

Ischnothyreus rixi, male palp, prolateral view (image by KE, specimen ID: ---05888)

ischnrixi9mdpalp05888KE.tif

Ischnothyreus rixi, male chelicerae, anterior view (image by KE, specimen ID: ---05888)

ischnrixi9mdchea05888KE.tif

Ischnothyreus rixi, male chelicerae, posterior view (image by KE, specimen ID: ---05888)

ischnrixi9mdcheT05888KE.tif

Ischnothyreus rixi, male palp, dorsal view (image by KE, specimen ID: ---05888)

ischnrixi9mdpald05888KE.tif

Ischnothyreus rixi, male carapace, anterior view (image by KE, specimen ID: ---05888)

ischnrixi9mpcara05888KE.tif

Ischnothyreus rixi, male habitus, dorsal view (image by KE, specimen ID: ---05888)

ischnrixi9mphabd05888KE.tif

Ischnothyreus rixi, male habitus, lateral view (image by KE, specimen ID: ---05888)

ischnrixi9mphabl05888KE.tif

Ischnothyreus rixi, male habitus, ventral view (image by KE, specimen ID: ---05888)

ischnrixi9mphabv05888KE.tif

Ischnothyreus rixi, male sternum, ventral view (image by KE, specimen ID: ---05888)

ischnrixi9mpstev05888KE.tif


            Female (PBI_OON 5597). Total length 1.88. As in male except as noted. CEPHALOTHORAX: Carapace without any pattern, pars cephalica slightly elevated in lateral view. Clypeus straight in front view. Sternum setae evenly scattered. Mouthparts: Chelicerae, endites and labium pale orange. fangs shape normal, without prominent basal process. Endites anteromedian tip unmodified. ABDOMEN: 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 widely hexagonal, only around epigastric furrow, not fused to epigastric scutum, with short posteriorly directed lateral apodemes. Postepigastric area setae present, dark, needle-like. Dense patch of setae anterior to spinnerets present. Colulus present. LEGS: pale orange. 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. Trichobothria examined with Compound microscope.
Ischnothyreus rixi, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---05597)

ischnrixi9fdepiv05597KE.tif

Ischnothyreus rixi, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---05597)

ischnrixi9fpepiv05597KE.tif

Ischnothyreus rixi, female habitus, lateral view (image by KE, specimen ID: ---05597)

ischnrixi9fphabl05597KE.tif

Ischnothyreus rixi, female habitus, ventral view (image by KE, specimen ID: ---05597)

ischnrixi9fphabv05597KE.tif

Ischnothyreus rixi, female habitus, dorsal view (image by KE, specimen ID: ---05597)

ischnrixi9fphabd05597KE.tif

 

DISTRIBUTION

AUSTRALIA
Ischnothyreus rixi 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 rixi, Discover Life Map
 

MATERIAL EXAMINED
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PBI USI Country State Division Locality Sex Type Status Elevation(m) GPS Coordinate Habitat Collection_Date Collector Inst. Code
PBI_OON 00021957  AUSTRALIA  Queensland    Nob Ck, Byfield (B&R Healy Property)  4 Adult Female      -22.86667; 150.61670    01 Aug 1994  D. Wallace, Healy  QM 
PBI_OON 00026300  AUSTRALIA  Queensland    Bunya Mts, Mowbullan  1 Adult Female      -26.85000; 151.56666  rainforest, Leaf Litter  10 Aug 1955  T.E. Woodward  QM 
  AUSTRALIA  Queensland    D'Aguilar Range NP, Boombana, 24 km W of Brisbane  1 Adult Female    520  -27.40194; 152.79222  eucalypt woodland, Leaf Litter  04 May 2009  H. Wood  CAS 
PBI_OON 00005597  AUSTRALIA  Queensland    Bunya Mountains  2 Adult Female  Paratype    -26.88333; 151.60000  rainforest, Leaf Litter  07 Nov 2005  M. Rix  QM 
PBI_OON 00025735  AUSTRALIA  Queensland    D'Aguilar NP, Mt Glorious Walk  1 Adult Male      -27.32194; 152.76250  rainforest, Leaf Litter  12 May 2007  K. Edward & K. Pitz  QM 
PBI_OON 00005888  AUSTRALIA  Queensland    Bunya Mountains  1 Adult Male  Holotype    -26.88333; 151.60000  rainforest, Leaf Litter  07 Nov 2005  M. Rix  QM 
PBI_OON 00025734  AUSTRALIA  Queensland    D'Aguilar NP, Mt Glorious Walk  1 Adult Female      -27.32194; 152.76250  rainforest, Leaf Litter  12 May 2007  K. Edward & K. Pitz  QM 
PBI_OON 00021957  AUSTRALIA  Queensland    Nob Ck, Byfield (B&R Healy Property)  10 Adult Male      -22.86667; 150.61670  rainforest, Leaf Litter  01 Aug 1994  D. Wallace, Healy  QM 
PBI_OON 00025730  AUSTRALIA  Queensland    D'Aguilar NP, Boombana Walk  1 Adult Male      -27.40611; 152.79083  rainforest, Leaf Litter  12 May 2007  K. Edward & K. Pitz  QM 
PBI_OON 00005635  AUSTRALIA  Queensland    D'Aguilar Range NP, Boombana, 24 km W of Brisbane  1 Adult Female    520  -27.40194; 152.79222  eucalypt woodland, Leaf Litter  04 May 2009  H. Wood  CAS 


 
 
 
 
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