Welcome Locality Data Entry        | Links | About Oonopidae | Outreach | Sign In 
Home | Project Description | Investigators | Species Pages |
Home >> Species Pages >>
OONOPIDAE SPECIES DESCRIPTION
(1) List all species     
OR       (2) Search by: Select the genus
Select the species
(Female redundant descriptions removed)
Ischnothyreus bifidus       Get publication



            Male (PBI_OON_0005674). Total length 1.81. 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 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 with strongly sclerotized, triangular extension, 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, clypeus very strongly curved downwards; 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, evenly scattered, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium dark red-brown. Chelicerae slightly divergent, anterior face with hyaline grooves and distal complex projections, medial section of fang with broad, fluted transparent process; without teeth on both promargin and retromargin; fangs without tooth-like projections, directed medially, shape normal, 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 pale 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 1/2 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. Postepigastric area setae present, 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 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, 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 shorter than 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, stout, tapering apically.
Ischnothyreus bifidus, male carapace, anterior view (image by KE, specimen ID: ---05674)

ischnbifidmpcara05674KE.tif

Ischnothyreus bifidus, male habitus, dorsal view (image by KE, specimen ID: ---05674)

ischnbifidmphabd05674KE.tif

Ischnothyreus bifidus, male habitus, lateral view (image by KE, specimen ID: ---05674)

ischnbifidmphabl05674KE.tif

Ischnothyreus bifidus, male habitus, ventral view (image by KE, specimen ID: ---05674)

ischnbifidmphabv05674KE.tif

Ischnothyreus bifidus, male sternum, ventral view (image by KE, specimen ID: ---05674)

ischnbifidmpstev05674KE.tif


            Female (PBI_OON 5640). Total length 1.78. 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. Clypeus straight in front view. Mouthparts: Chelicerae, endites and labium pale orange. fangs without prominent basal process. Endites anteromedian tip unmodified. 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 widely hexagonal, covering about 1/3 of the abdominal length, not fused to epigastric scutum, with short posteriorly directed lateral apodemes. Epigastric area needle-like. Postepigastric area setae dark. Dense patch of setae anterior to spinnerets present. Colulus 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 bifidus, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---05675)

ischnbifidfpepiv05675KE.tif

Ischnothyreus bifidus, female habitus, lateral view (image by KE, specimen ID: ---05675)

ischnbifidfphabl05675KE.tif

Ischnothyreus bifidus, female habitus, ventral view (image by KE, specimen ID: ---05675)

ischnbifidfphabv05675KE.tif

Ischnothyreus bifidus, female habitus, dorsal view (image by KE, specimen ID: ---05675)

ischnbifidfphabd05675KE.tif

 

DISTRIBUTION

AUSTRALIA
Ischnothyreus bifidus 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 bifidus, 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 00005674  AUSTRALIA  Queensland  N. E. Queensland  Mt Lewis Forest Reserve, 16 km from hwy, along Mt Lewis Rd  1 Adult Male  Holotype    -16.57611; 145.26416  rainforest alongside creek, Leaf Litter  02 Apr 2009  K. Edward & J. Waldock  QM 
PBI_OON 00005675  AUSTRALIA  Queensland  N. E. Queensland  Mt Lewis Forest Reserve, 16 km from hwy, along Mt Lewis Rd  1 Adult Female  Paratype    -16.57611; 145.26416  rainforest alongside creek, Leaf Litter  02 Apr 2009  K. Edward & J. Waldock  QM 
PBI_OON 00005559  AUSTRALIA  Queensland  N. E. Queensland  Mt Lewis Forest Reserve, Mt Lewis Rd, 21-22 km from Hwy  1 Adult Male      -16.54250; 145.28388  rainforest, Leaf Litter  02 Apr 2009  K. Edward & J. Waldock  QM 
PBI_OON 00005640  AUSTRALIA  Queensland  N. E. Queensland  Mt Lewis Forest Reserve, 16 km from hwy, along Mt Lewis Rd  4 Mixed  Paratype    -16.57611; 145.26416  rainforest alongside creek, Leaf Litter  02 Apr 2009  K. Edward & J. Waldock  QM 
  AUSTRALIA  Queensland  N. E. Queensland  Mt Lewis Forest Reserve, Mt Lewis Rd, 21-22 km from Hwy  2 Adult Male      -16.54250; 145.28388  rainforest, Leaf Litter  02 Apr 2009  K. Edward & J. Waldock  QM 
PBI_OON 00025809  AUSTRALIA  Queensland    Black Mt, 17km ESE Julatten  1 Adult Female    1000  -16.65000; 145.48330  rainforest, moss forest litter  29 Apr 1982  G. Monteith, D. Yeates, D. Cook  QM 
PBI_OON 00005863  AUSTRALIA  Queensland    Julatten, Mt Lewis Rd  2 Mixed      ;   rainforest, moss forest litter  12 Nov 1975  A. Walford-Huggins  ANIC 
PBI_OON 00025810  AUSTRALIA  Queensland    Mt Demi, 7km SW Mossman  1 Adult Male    950  -16.50000; 145.31670  rainforest, Leaf Litter  26 Apr 1983  G. Monteith, D. Yeates  QM 
PBI_OON 00025813  AUSTRALIA  Queensland    Mt Lewis  1 Adult Female    914  -16.58333; 145.28330  rainforest, Leaf Litter  04 Sept 1983  A. Williamson  QM 
PBI_OON 00021769  AUSTRALIA  Queensland    Mt Spurgeon (Star house)  1 Adult Female    1100  -16.45500; 145.20660  rainforest  19 Nov 1997  D. Clyne  QM 
PBI_OON 00022137  AUSTRALIA  Queensland    Mt Spurgeon;2km SE,via Mt Carbine  4 Mixed    1100  -16.45000; 145.20000  rainforest, Leaf Litter  20 Dec 1988  G. Monteith, G. Thompson  QM 
PBI_OON 00025808  AUSTRALIA  Queensland    Mt Lewis, 2km N  2 Adult Female    1000  -16.56667; 145.26670  rainforest, Leaf Litter  09 Sept 1981  G. Monteith, D. Cook  QM 
PBI_OON 00005580  AUSTRALIA  Queensland    Carbine Uplands area, Mt Lewis Road  1 Adult Male    600  -16.57722; 145.30916  rainforest, Leaf Litter  01 Apr 2009  K. Staunton  QM 
PBI_OON 00021968  AUSTRALIA  Queensland    Mt Demi summit, 7km SW Mossman  7 Mixed    1100  -16.50000; 145.31670  rainforest  17 Dec 1995  G. Monteith, G. Thompson, Ford  QM 
PBI_OON 00021531  AUSTRALIA  Queensland    Mt Demi, 7km SW Mossman  1 Adult Female    1100  -16.50000; 145.31670  rainforest, Leaf Litter  29 Oct 1983  D. Yeates, G. Thompson  QM 
PBI_OON 00021965  AUSTRALIA  Queensland    Mt Lewis Road, Windmill Creek  1 Adult Female    900  -16.56983; 145.26750  rainforest  18 Nov 1997  G. Monteith, D. Cook  QM 
PBI_OON 00021776  AUSTRALIA  Queensland    Mt Spurgeon (Star house)  1 Adult Male    1100  -16.45500; 145.20660  rainforest  19 Nov 1997  G. Monteith  QM 
PBI_OON 00005576  AUSTRALIA  Queensland    Carbine Uplands area, Mt Lewis Rd  1 Adult Female    820  -16.58638; 145.29250  rainforest, Leaf Litter  01 Apr 2009  K. Staunton  QM 
PBI_OON 00021798  AUSTRALIA  Queensland    Mt Demi Nth Peak  5 Mixed    1050  -16.50000; 145.31670  rainforest  17 Dec 1995  G. Monteith, G. Thompson, Ford  QM 
PBI_OON 00025817  AUSTRALIA  Queensland    Mt Demi, 7km SW Mossman  4 Mixed    1100  -16.50000; 145.31670  rainforest, Leaf Litter  29 Oct 1983  D. Yeates, G. Thompson  QM 
PBI_OON 00021985  AUSTRALIA  Queensland    Mt Spurgeon (Star house)  2 Adult Female    1100  -16.45500; 145.20660  rainforest, Leaf Litter  19 Nov 1997  G. Monteith  QM 
PBI_OON 00025816  AUSTRALIA  Queensland    The Bluff, 11km W Mossman  1 Adult Female    1000  -16.45000; 145.26670  rainforest, Leaf Litter  02 Nov 1983  G. Monteith, D. Yeates, G. Thompson  QM 
PBI_OON 00022180  AUSTRALIA  Queensland    Carbine Tableland, Pauls Luck-Doolins Creek  1 Adult Male    1100  -16.43333; 145.26666  rainforest, Leaf Litter  30 Nov 1990  G. Monteith, G. Thompson, D. Cook, H. Janetzki  QM 
PBI_OON 00025723  AUSTRALIA  Queensland    Mossman Gorge National Park, circuit track  1 Adult Male      -16.47222; 145.33055  rainforest, Leaf Litter  21 May 2007  K. Edward & K. Pitz  QM 
PBI_OON 00025812  AUSTRALIA  Queensland    Mt Demi, 7km SW Mossman  3 Adult Female    950  -16.50000; 145.31670  rainforest, Leaf Litter  26 Apr 1983  G. Monteith, D. Yeates  QM 
PBI_OON 00021790  AUSTRALIA  Queensland    Mt Spurgeon (Star house)  1 Adult Female    1100  -16.45500; 145.20660  rainforest, Leaf Litter  20 Nov 1997  G. Monteith  QM 
PBI_OON 00025807  AUSTRALIA  Queensland    The Bluff, 11km W Mossman  1 Adult Male    950  -16.45000; 145.26670  rainforest, Leaf Litter  27 Apr 1983  G. Monteith, D. Yeates  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
 
©Copyright 2006-2022. All Rights Reserved.
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.
If the format of any material on the website interferes with your ability to access that material, please contact us at [email protected]