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 cornuatus       Get publication



            Male (PBI_OON 25944). Total length 1.50. 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, 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, 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 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, pale orange, 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 pale orange. 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, same as sternum in sclerotization; 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, 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. 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. Epigastric scutum weakly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. 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, 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: yellow, 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 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; 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.
Ischnothyreus cornuatus, male palp, prolateral view (image by KE, specimen ID: ---25944)

ischncornumdpalp25944KE.tif

Ischnothyreus cornuatus, male palp, retrolateral view (image by KE, specimen ID: ---25944)

ischncornumdpalr25944KE.tif

Ischnothyreus cornuatus, male chelicerae, anterior view (image by KE, specimen ID: ---25944)

ischncornumdchea25944KE.tif

Ischnothyreus cornuatus, male chelicerae, posterior view (image by KE, specimen ID: ---25944)

ischncornumdcheT25944KE.tif

Ischnothyreus cornuatus, male palp, dorsal view (image by KE, specimen ID: ---25944)

ischncornumdpald25944KE.tif

Ischnothyreus cornuatus, male carapace, anterior view (image by KE, specimen ID: ---25944)

ischncornumpcara25944KE.tif

Ischnothyreus cornuatus, male habitus, dorsal view (image by KE, specimen ID: ---25944)

ischncornumphabd25944KE.tif

Ischnothyreus cornuatus, male habitus, lateral view (image by KE, specimen ID: ---25944)

ischncornumphabl25944KE.tif

Ischnothyreus cornuatus, male habitus, ventral view (image by KE, specimen ID: ---25944)

ischncornumphabv25944KE.tif

Ischnothyreus cornuatus, male sternum, ventral view (image by KE, specimen ID: ---25944)

ischncornumpstev25944KE.tif


            Female (PBI_OON 25757). Total length 1.73. As in male except as noted. CEPHALOTHORAX: Carapace without any pattern. Sternum setae dark. Mouthparts: paturon inner margin unmodified. 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 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. Colulus present. LEGS: pale orange. Leg spination (only surfaces bearing spines listed, all spines longer than segment width): femora: I p0-2-0; 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 cornuatus, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---25757)

ischncornufdepiv25757KE.tif

Ischnothyreus cornuatus, female epigynum, epigynal area, ventral view (image by KE, specimen ID: ---25757)

ischncornufpepiv25757KE.tif

Ischnothyreus cornuatus, female habitus, dorsal view (image by KE, specimen ID: ---25757)

ischncornufphabd25757KE.tif

Ischnothyreus cornuatus, female habitus, lateral view (image by KE, specimen ID: ---25757)

ischncornufphabl25757KE.tif

Ischnothyreus cornuatus, female habitus, ventral view (image by KE, specimen ID: ---25757)

ischncornufphabv25757KE.tif

 

DISTRIBUTION

AUSTRALIA
Ischnothyreus cornuatus 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 cornuatus, 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 00021982  AUSTRALIA  Queensland    Tower nr The Crater NP  5 Mixed    1230  -17.45000; 145.48330  rainforest  25 Nov 1994  G. Monteith, J. Hasenpusch  QM 
PBI_OON 00005847  AUSTRALIA  Queensland    Mt Fisher  1 Adult Female    1150  -17.33000; 145.32000  rainforest  03 May 1995  P. Zborowski  ANIC 
PBI_OON 00022107  AUSTRALIA  Queensland    Millaa Millaa Lookout  1 Adult Male    1000  -17.51667; 145.56670  rainforest  01 Dec 1993  J. Hasenpusch  QM 
PBI_OON 00022177  AUSTRALIA  Queensland    Tower nr The Crater  1 Adult Female    1230  -17.45000; 145.48330  rainforest, Leaf Litter  23 Nov 1994  G. Monteith  QM 
PBI_OON 00025797  AUSTRALIA  Queensland    21km S Atherton  1 Adult Male    1070  -17.45000; 145.46670  rainforest, Leaf Litter  05 Nov 1983  D. Yeates, G. Thompson  QM 
PBI_OON 00025799  AUSTRALIA  Queensland    Mt Fisher, 7 km SW. of Millaa Millaa  1 Adult Male    1100  -17.55000; 145.55000  rainforest, Leaf Litter  27 Apr 1982  G. Monteith, D. Yeates, D. Cook  QM 
PBI_OON 00025757  AUSTRALIA  Queensland    21km S Atherton  1 Adult Female  Paratype  1070  -17.45000; 145.46670  rainforest, Leaf Litter  05 Nov 1983  D. Yeates, G. Thompson  QM 
PBI_OON 00025944  AUSTRALIA  Queensland    21km S Atherton  1 Adult Male  Holotype  1070  -17.45000; 145.46670  rainforest, Leaf Litter  05 Nov 1983  D. Yeates, G. Thompson  QM 
PBI_OON 00021955  AUSTRALIA  Queensland    Mt Fisher (Kjelberg)  1 Adult Female    1100  -17.53333; 145.55000  rainforest, Leaf Litter  18 May 1995  G. Monteith  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]