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OONOPIDAE SPECIES DESCRIPTION
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Ischnothyreus elvis       Get publication



            Male (PBI_OON 15590). Total length 1.45. CEPHALOTHORAX: Carapace pale orange, without any pattern, ovoid in dorsal view, pars cephalica domed 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 strongly reticulate, sides strongly reticulate, thorax without depressions, fovea absent, only the most upper part and a small part of the pars thoracica are smooth., 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, 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, light, needle-like. Chilum absent. Eyes six, well developed, ALE largest, ALE circular, PME oval, PLE oval; 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 as long as wide, white, 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 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 two small processes at base of fangs, fang groove with few small and one larger denticles, third process at base of fang with brush-like tip on retromargin; fangs 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, inner margin with medial denticles. Labium rectangular, fused to sternum, anterior margin indented at middle, same as sternum in sclerotization; with 1 or 2 setae on anterior margin, subdistal portion with unmodified setae. Endites distally not excavated, anteromedian tip with one strong, tooth-like projection, same as sternum in sclerotization, with needle-like hairs ventrally. 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 medium, 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 strongly sclerotized, pale orange, covering full length of abdomen, no soft tissue visible from above, fused to epigastric scutum, middle surface striated, sides striated, anterior half without projecting denticles, anterior and posterior half of scutum are darkened. Epigastric scutum strongly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum strongly sclerotized, pale orange, long, semicircular, covering about 3/4 of abdominal length, fused to epigastric scutum, anterior margin unmodified, without posteriorly directed lateral apodemes. Spinneret scutum absent. Dorsum setae present, light, needle-like. Epigastric area setae uniform, light, needle-like. Postepigastric area setae present, light, needle-like. Spinneret scutum without fringe of setae. Dense patch of setae anterior to spinnerets absent. Interscutal membrane with setae. 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, 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 p0-0-1; 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 examined with Compound microscope; tibia: each with three; metatarsus: each with one. GENITALIA: Epigastric region with sperm pore large, 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 dark; trochanter normal size, with 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, 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 enlarged, with big roundish opening on retrolateral side, membranous outgrowth and small, pointed apophysis ventrally.
Ischnothyreus elvis, male habitus, dorsal view (image by YK, specimen ID: ---15590)

ischnelvismphabd15590YK.tif

Ischnothyreus elvis, male habitus, ventral view (image by YK, specimen ID: ---15590)

ischnelvismphabv15590YK.tif

Ischnothyreus elvis, male habitus, lateral view (image by YK, specimen ID: ---15590)

ischnelvismphabl15590YK.tif

Ischnothyreus elvis, male carapace, dorsal view (image by YK, specimen ID: ---15590)

ischnelvismpcard15590YK.tif

Ischnothyreus elvis, male carapace, ventral view (image by YK, specimen ID: ---15590)

ischnelvismpcarv15590YK.tif

Ischnothyreus elvis, male carapace, anterior view (image by YK, specimen ID: ---15590)

ischnelvismpcara15590YK.tif

Ischnothyreus elvis, male chelicerae, retrolateral view (image by YK, specimen ID: ---15590)

ischnelvismdcher15590YK.tif

Ischnothyreus elvis, male palp, prolateral view (image by YK, specimen ID: ---15590)

ischnelvismdpalp15590YK.tif

Ischnothyreus elvis, male palp, retrolateral view (image by YK, specimen ID: ---15590)

ischnelvismdpalr15590YK.tif

 

DISTRIBUTION

BRUNEI DARUSSALAM
Ischnothyreus elvis 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 elvis, 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 00015590  BRUNEI DARUSSALAM  Belait District    Sungai Liang, Arboretum Forest Reserve  1 Adult Male  Holotype  20  4.68638; 114.50000  primary forest, Mixed dipterocarp forest  29 Nov 1996  Hauser, B.  MHNG 


 
 
 
 
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