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 hooki       Get publication



            Male (PBI_OON 31692). Total length 1.33. 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 without extension or projections, posterolateral surface without spikes, surface of elevated portion of pars cephalica smooth, sides smooth, thorax without depressions, fovea absent, egg-shaped patches behind eyes pale orange, 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 light, needle-like, present, scattered; non-marginal pars thoracica setae light, needle-like; marginal setae light, needle-like. 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, light, needle-like, setae on clypeus rather long, anteriorly directed. Chilum absent. Eyes six, well developed, ALE largest, ALE circular, PME oval, PLE circular; posterior eye row straight from above, procurved from front; ALE separated by less than their radius, ALE-PLE separated by less than ALE radius, 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, distance between coxae II and III greater than distance between coxae I and II, and coxae III and IV, extensions of pre-coxal triangles present, lateral margins unmodified, without posterior hump; setae abundant, 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 posteriorly, shape normal, without prominent basal process, tip unmodified; setae light, needle-like, evenly scattered; paturon inner margin with scattered setae, distal region unmodified. Labium triangular, fused to sternum, same as sternum in sclerotization; with 3-5 setae on anterior margin, subdistal portion with unmodified setae. Endites distally not excavated, 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, booklung covers very pale, difficult to see. 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. Dorsal scutum weakly sclerotized, pale orange, without color pattern, covering about 1/2 of abdomen, between 1/4 and 1/2 abdomen width, 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, anterior margin of sperm pore with a fringe of needle-like setae. Postepigastric scutum weakly sclerotized, pale orange, short, almost rectangular, covering about 1/2 of abdominal length, not fused to epigastric scutum, anterior margin unmodified, without posteriorly directed lateral apodemes. Spinneret scutum present, incomplete ring. Dorsum setae present, light, needle-like, slightly more setae on anterior part of dorsal scutum. Epigastric area setae uniform, light, needle-like. Postepigastric area setae present, light, needle-like. Spinneret scutum with fringe of needle-like setae. Dense patch of setae anterior to spinnerets absent. Colulus represented only by setae. LEGS: yellow, without color pattern; femur IV not thickened, same size as femora I-III, patella plus tibia I shorter than carapace, tibia IV specialized hairs on ventral apex absent, tibia IV ventral scopula absent, metatarsi III and IV weak ventral scopula absent. Leg spination (only surfaces bearing spines listed, all spines longer than segment width): femora: I p0-1-1; r0-0-1; II v0-0-2; tibiae: I, II v4-2-2; metatarsi: I, II v2-2-0; (leg I: right femur with only one spine prolaterally. ). Tarsi I to IV superior claws tooth not examined in detail. Tarsi I to IV without inferior claw. Trichobothria not examined. GENITALIA: Epigastric region with sperm pore large, circular, situated in front of anterior spiracles, unmodified; furrow without setae. Palp normal size, strongly sclerotized, right and left palps symmetrical, proximal segments brown; embolus light, embolus short hook; 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; tibia trichobothria with 3 trichobothria; cymbium brown, ovoid in dorsal view, fused with bulb but with clearly defined seam between, not extending beyond distal tip of bulb, without stout setae, without distal patch of setae; bulb brown, more than 2 times as long as cymbium, stout, tapering apically, middle part with ventral protuberance and lobe, distal part with ear-like outgrowth prolaterally.
Ischnothyreus hooki, male habitus, dorsal view (image by YK, specimen ID: ---31692)

ischnhookimphabd31692YK.tif

Ischnothyreus hooki, male habitus, ventral view (image by YK, specimen ID: ---31692)

ischnhookimphabv31692YK.tif

Ischnothyreus hooki, male habitus, lateral view (image by YK, specimen ID: ---31692)

ischnhookimphabl31692YK.tif

Ischnothyreus hooki, male carapace, dorsal view (image by YK, specimen ID: ---31692)

ischnhookimpcard31692YK.tif

Ischnothyreus hooki, male carapace, ventral view (image by YK, specimen ID: ---31692)

ischnhookimpcarv31692YK.tif

Ischnothyreus hooki, male carapace, lateral view (image by YK, specimen ID: ---31692)

ischnhookimpcarl31692YK.tif

Ischnothyreus hooki, male carapace, anterior view (image by YK, specimen ID: ---31692)

ischnhookimpcara31692YK.tif

Ischnothyreus hooki, male abdomen, dorsal view (image by YK, specimen ID: ---31692)

ischnhookimpabdd31692YK.tif

Ischnothyreus hooki, male abdomen, ventral view (image by YK, specimen ID: ---31692)

ischnhookimpabdv31692YK.tif

Ischnothyreus hooki, male palp, prolateral view (image by YK, specimen ID: ---31692)

ischnhookimdpalp31692YK.tif

Ischnothyreus hooki, male palp, retrolateral view (image by YK, specimen ID: ---31692)

ischnhookimdpalr31692YK.tif


            Female (PBI_OON 31769). Total length 1.80. As in male except as noted. CEPHALOTHORAX: Carapace without any pattern. Clypeus setae setae on clypeus rather long, anteriorly directed. Eyes posterior eye row procurved from above. Mouthparts: fangs directed medially. Endites anteromedian tip unmodified. Female palp claws absent; spines present, formula: femur v2-1-1; tarsus unmodified; trichobothria tibia with three trichobothria. ABDOMEN: Book lung covers booklung covers very pale, difficult to see. Pedicel scutum not extending far dorsal of pedicel. Dorsal scutum covering less than 1/2 of abdomen, less than 1/4 abdomen width, not fused to epigastric scutum. Postepigastric scutum widely hexagonal, only around epigastric furrow, 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 p0-2-1; r0-0-1; II p0-0-2; tibiae: I, II p2-1-1; r2-1-1; metatarsi: I, II p1-1-0; r1-1-0. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria examined with Compound microscope; tibia: I three, II three, III three; metatarsus: I one, II one, III one. GENITALIA: Shape: the posterior margin of the epigastric scutum is lined with numerous needle-like setae. In the middle of the postepigastric scutum is a strongly winding tube visible, which runs posteriorly.
Ischnothyreus hooki, female habitus, dorsal view (image by YK, specimen ID: ---31769)

ischnhookifphabd31769YK.tif

Ischnothyreus hooki, female habitus, ventral view (image by YK, specimen ID: ---31769)

ischnhookifphabv31769YK.tif

Ischnothyreus hooki, female habitus, lateral view (image by YK, specimen ID: ---31769)

ischnhookifphabl31769YK.tif

Ischnothyreus hooki, female carapace, dorsal view (image by YK, specimen ID: ---31769)

ischnhookifpcard31769YK.tif

Ischnothyreus hooki, female carapace, ventral view (image by YK, specimen ID: ---31769)

ischnhookifpcarv31769YK.tif

Ischnothyreus hooki, female carapace, lateral view (image by YK, specimen ID: ---31769)

ischnhookifpcarl31769YK.tif

Ischnothyreus hooki, female abdomen, ventral view (image by YK, specimen ID: ---31769)

ischnhookifpabdv31769YK.tif

Ischnothyreus hooki, female epigynum, epigynal area, ventral view (image by YK, specimen ID: ---31769)

ischnhookifpepiv31769YK.tif

Ischnothyreus hooki, female epigynum, epigynal area, dorsal view (image by YK, specimen ID: ---31769)

ischnhookifpepid31769YK.tif

Ischnothyreus hooki, female epigynum, epigynal area, ventral view (image by YK, specimen ID: ---31769)

ischnhookifdepiv31769YK.tif

Ischnothyreus hooki, female epigynum, epigynal area, dorsal view (image by YK, specimen ID: ---31769)

ischnhookifdepid31769YK.tif

 

DISTRIBUTION

INDONESIA
Ischnothyreus hooki 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 hooki, 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 00031692  INDONESIA  Kalimantan Timur    Tenggarong  1 Adult Male  Holotype    -0.41555; 116.98111  light forest, Leaf Litter  04 Aug 1980  Deeleman, Christa  RMNH 
PBI_OON 00031628  INDONESIA  Kalimantan Timur    Sungai Wain Protection Forest  1 Adult Male    80  -1.14333; 116.84972  secondary forest  05 Oct 2008  P. Schwendinger  MHNG 
PBI_OON 00031777  INDONESIA  Kalimantan Timur    Sepaku  1 Adult Female      -0.92000; 116.77000  degraded rainforest, litter  02 Aug 1980  C.L. Deeleman and P.R. Deeleman  RMNH 
PBI_OON 00031363  INDONESIA  Kalimantan Timur    Sepaku  2 Adult Female  Paratype    -0.92000; 116.77000  primary forest  21 Jul 1982  Deeleman, Christa  RMNH 
PBI_OON 00031363  INDONESIA  Kalimantan Timur    Sepaku  1 Adult Male  Paratype    -0.92000; 116.77000  degraded primary forest  02 Aug 1980  Deeleman, Christa  RMNH 


 
 
 
 
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]