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



            Male (PBI_OON 15673). Total length 1.30. CEPHALOTHORAX: Carapace pale orange, with dark brown egg-shaped patches behind eyes, ovoid 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 finely reticulate, thorax without depressions, fovea absent, egg-shaped patches behind eyes very pale, barely visible, without radiating rows of pits; lateral margin straight, rebordered, 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 slightly rebordered, 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, light, needle-like. Chilum absent. Eyes six, well developed, ALE largest, ALE circular, PME oval, PLE circular; posterior eye row procurved from both above and 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, 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 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, with sclerotized, spine-like apophyses on the anterior face of the paturon, about as long as paturon, originating near its base, branched and with three trichobothria-like setae.; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae light, needle-like, evenly scattered; paturon distal region unmodified. Labium rectangular, fused to sternum, anterior margin not indented at middle, same as sternum in sclerotization; with 6 or more 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. Posterior spiracles not connected by groove. Pedicel tube short, unmodified, scuto-pedicel region unmodified, scutum not 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 1/2 to 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, not protruding, small lateral sclerites absent. Postepigastric scutum weakly sclerotized, pale orange, long, almost rectangular, covering about 3/4 of abdominal length, fused to epigastric scutum, anterior margin unmodified, without posteriorly directed lateral apodemes. Spinneret scutum present, incomplete ring. Dorsum setae present, light, needle-like. Epigastric area setae uniform, light, needle-like, sperm pore with a fringe of needle-like setae. 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: pale orange, without color pattern; femur IV not thickened, same size as femora I-III, patella plus tibia I near as long as carapace. Leg spination (only surfaces bearing spines listed, all spines longer than segment width): femora: I p0-1-1; II p0-0-1; r0-0-1; 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. Tarsi I to IV without inferior claw. Trichobothria not examined. GENITALIA: Epigastric region with sperm pore small, circular, situated at level of anterior spiracles, unmodified; furrow without omega-shaped insertions, without setae. Palp normal size, strongly sclerotized, right and left palps symmetrical, proximal segments brown; embolus emoblus not discernible; trochanter normal size, with ventral projection, with large ventral projection; femur normal size, one to two times as long as trochanter, 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; bulb brown, stout, tapering apically, middle part with ventral protuberance, distal part with collar-like membrane retrolaterally and membranous apophysis apically..
Ischnothyreus tekek, male habitus, dorsal view (image by YK, specimen ID: ---15673)

Ischntekekmphabd15673YK.tif

Ischnothyreus tekek, male habitus, ventral view (image by YK, specimen ID: ---15673)

Ischntekekmphabv15673YK.tif

Ischnothyreus tekek, male habitus, lateral view (image by YK, specimen ID: ---15673)

Ischntekekmphabl15673YK.tif

Ischnothyreus tekek, male carapace, anterior view (image by YK, specimen ID: ---15673)

Ischntekekmpcara15673YK.tif

Ischnothyreus tekek, male chelicerae, prolateral view (image by YK, specimen ID: ---15673)

Ischntekekmdchep15673YK.tif

Ischnothyreus tekek, male palp, prolateral view (image by YK, specimen ID: ---15673)

Ischntekekmdpalp15673YK.tif

Ischnothyreus tekek, male palp, retrolateral view (image by YK, specimen ID: ---15673)

Ischntekekmdpalr15673YK.tif


            Female (PBI_OON 15673). Total length 1.87. As in male except as noted. CEPHALOTHORAX: Carapace without any pattern, broadly oval in dorsal view, pars cephalica slightly elevated in lateral view, fovea present. Clypeus margin unmodified. Sternum radial furrow opposite coxae III absent; setae abundant. Endites anteromedian tip unmodified. Female palp claws absent; spines present, formula: femur v1-1-0. ABDOMEN: Dorsal scutum covering about 1/2 of abdomen, between 1/4 and 1/2 abdomen width. Epigastric scutum slightly protuding, small lateral sclerites present, posterior margin lined with numerous needle-like setae. Postepigastric scutum widely hexagonal, only around epigastric furrow, 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 p0-1-2; r0-0-1; tibiae: I p2-1-1; r2-1-1; metatarsi: I p1-1-0; r1-1-0; (leg I: the most distal spine very small. ). GENITALIA: Shape: the posterior margin of the epigastric scutum is lined with numerous needle-like setae. The anterior margin of the postepigastric scutum is sclerotized, in it's middle starts a winding tube (strongly winding in dorsal view) running posteriorly, ending in a goblet-like atrium. The lateral apodemes are short..
Ischnothyreus tekek, female habitus, dorsal view (image by YK, specimen ID: ---15673)

Ischntekekfphabd15673YK.tif

Ischnothyreus tekek, female habitus, ventral view (image by YK, specimen ID: ---15673)

Ischntekekfphabv15673YK.tif

Ischnothyreus tekek, female habitus, lateral view (image by YK, specimen ID: ---15673)

Ischntekekfphabl15673YK.tif

Ischnothyreus tekek, female abdomen, ventral view (image by YK, specimen ID: ---15673)

Ischntekekfpabdv15673YK.tif

Ischnothyreus tekek, female epigynum, epigynal area, ventral view (image by YK, specimen ID: ---15673)

Ischntekekfdepiv15673YK.tif

Ischnothyreus tekek, female epigynum, epigynal area, dorsal view (image by YK, specimen ID: ---15673)

Ischntekekfdepid15673YK.tif

 

DISTRIBUTION

MALAYSIA
Ischnothyreus tekek 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 tekek, 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 00032368  MALAYSIA  Johor  Pulau Tioman  2 km E of Kampung Tekek  1 Adult Female  Paratype  500  2.81666; 104.18333    04 Jul 2001  A. Schultz, K. Vock  MHNG 
PBI_OON 00015673  MALAYSIA  Johor  Pulau Tioman  2 km E of Kampung Tekek  1 Adult Male  Holotype  500  2.81666; 104.18333    04 Jul 2001  A. Schultz, K. Vock  MHNG 
PBI_OON 00015671  MALAYSIA  Johor  Pulau Tioman  2 km E of Kampung Tekek  1 Adult Male  Paratype  500  2.81666; 104.18333    04 Jul 2001  A. Schultz, K. Vock  MHNG 
PBI_OON 00032351  MALAYSIA  Johor  Pulau Tioman  Path from Kampung Paya to Gunung Kajang  1 Adult Female  Paratype  400  2.76666; 104.11666    06 Jun 2007  A. Schultz  MHNG 


 
 
 
 
The American Museum of Natural History, New York, in collaboration with
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