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OONOPIDAE SPECIES DESCRIPTION
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Ischnothyreus eungella       Get publication



            Male (PBI_OON 25722). Total length 1.43. CEPHALOTHORAX: Carapace yellow, with dark brown egg-shaped patches behind eyes, broadly oval in dorsal view, pars cephalica strongly elevated in lateral view, anteriorly narrowed to between 0.5 and 0.75 times its maximum width, 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, straight in front view, vertical in lateral view, high, ALE separated from edge of carapace by their radius or more, median projection absent; setae present, dark, needle-like. Eyes six, well developed, ALE largest, ALE circular, PME oval, 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, yellow, 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, evenly scattered, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium orange-brown. Chelicerae straight, anterior face unmodified; promargin with two teeth, retromargin without teeth; fangs without tooth-like projections, directed medially, shape normal, without 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. 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 anteromedian tip unmodified, posteromedian part unmodified. 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, yellow, 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, 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 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 p0-2-0; II p2-2-0; v2-2-0; patellae: II p1-1-0; v1-1-0; tibiae: I p2-2-0; v2-2-0; metatarsi: I p1-1-0; v1-1-0; tarsi: I p0-1-0. Tarsi I to IV superior claws tooth not examined in detail. 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, shorter than trochanter, without posteriorly rounded lateral dilation, attaching to patella basally; patella shorter than 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, more than 2 times as long as cymbium, stout, tapering apically.

            Female (PBI_OON 25721). Total length 1.43. As in male except as noted. CEPHALOTHORAX: Carapace without any pattern, pars cephalica slightly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, sides finely reticulate. Clypeus curved downwards in front view, low, ALE separated from edge of carapace by less than their radius. Mouthparts: Chelicerae, endites and labium yellow. fangs directed posteriorly. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. 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 pale orange, 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 p0-2-0; II p2-2-0; v2-2-0; patellae: II p1-1-0; v1-1-0; tibiae: I p2-2-0; v2-2-0; metatarsi: I p1-1-0; v1-1-0; tarsi: I p0-1-0. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria examined with Compound microscope.
 

DISTRIBUTION

AUSTRALIA
Ischnothyreus eungella 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 eungella, 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 00025721  AUSTRALIA  Queensland    Eungella National Park, Cedar Grove Track  1 Adult Female  Paratype    -21.13555; 148.49805  rainforest, Leaf Litter  01 Jun 2007  K. Edward & K. Pitz  QM 
PBI_OON 00021962  AUSTRALIA  Queensland    Finch Hatton NP  3 Adult Male    350  -21.15000; 148.63330  rainforest, Leaf Litter  14 Feb 1986  R. Raven, J. Gallon  QM 
PBI_OON 00021690  AUSTRALIA  Queensland    Eungella NP, Finch Hatton Gorge (NQ 37)  2 Adult Male      -21.07166; 148.63830  rainforest, Leaf Litter  03 Dec 1992  R.J. & S. Raven, P. & E. Lawless  QM 
PBI_OON 00025722  AUSTRALIA  Queensland    Eungella National Park, Cedar Grove Track  1 Adult Male  Holotype    -21.13555; 148.49805  rainforest, Leaf Litter  01 Jun 2007  K. Edward & K. Pitz  QM 


 
 
 
 
The American Museum of Natural History, New York, in collaboration with
The California Academy of Sciences, San Francisco   The University of California, Berkeley
The Field Museum of Natural History, Chicago   George Washington University, Washington DC
 
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This material is based upon work supported by the National Science Foundation under Grant No. DEB 0613754. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
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