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OONOPIDAE SPECIES DESCRIPTION
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Xyphinus distortus       Get publication



            Male (PBI_OON 12061). Total length 1.71. CEPHALOTHORAX: Carapace orange-brown, without any pattern, ovoid in dorsal view, pars cephalica strongly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, with angular posterolateral corners, posterolateral edge with pair of pits, posterior margin not bulging below posterior rim, anterolateral corners without extension or projections, posterolateral surface with 1 pair of spikes, surface of elevated portion of pars cephalica smooth, sides smooth, thorax without depressions, fovea absent, posterior margin with four lobate, sclerotized extensions, dorsal from the pedicel, without radiating rows of pits; lateral margin straight, rebordered, with sharply pointed 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, 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, PME largest, all eyes oval; posterior eye row recurved from above, straight from front; ALE separated by their radius to diameter, ALE-PLE touching, PME touching throughout most of their length, PLE-PME touching. Sternum longer than wide, pale orange, uniform, 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 not touching, anterior margin unmodified, posterior margin not extending posteriorly of coxae IV, anterior corner unmodified, distance between coxae approximately equal, extensions of pre-coxal triangles absent, lateral margins unmodified, without posterior hump, anterior margin of sternum sclerotized. A pair of sclerotized impressions opposite coxae III, extending fan-like anteriorly. Sickle-shaped structures extending fan-like anteriorly; setae abundant, light, needle-like, densest laterally, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium pale orange. Chelicerae slightly divergent, anterior face unmodified; 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 indented at middle, same as sternum in sclerotization, distal part of labium slightly sclerotized; with 3-5 setae on anterior margin. Endites distally not excavated, anteromedian tip with backwards folded ridge, 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 connected by groove. Pedicel tube long, ribbed, scuto-pedicel region with straight scutal ridge, scutum extending far dorsal of pedicel, plumose hairs absent, matted setae on anterior ventral abdomen in pedicel area absent, scutal ridge interrupted. Dorsal scutum strongly sclerotized, orange-brown, without color pattern, covering full length of abdomen, no soft tissue visible from above, not fused to epigastric scutum, middle surface smooth, sides smooth, anterior half without projecting denticles. Epigastric scutum strongly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum strongly sclerotized, pale orange, long, semicircular, covering nearly full length of abdominal length, fused to epigastric scutum, anterior margin unmodified, with short posteriorly directed lateral apodemes. Spinneret scutum present, incomplete ring. Dorsum setae present, light, needle-like. 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. 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, tibiae leg I and II with one row of stronger setae pro- and retrolaterally, metatarsi leg III and IV with harpoon-like setae prolaterally spur on dorsal apex. Leg spines absent. 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 in front of anterior spiracles, unmodified; furrow without omega-shaped insertions, without setae. Palp normal size, not strongly sclerotized, right and left palps symmetrical, proximal segments pale orange; embolus not discernible; trochanter normal size, unmodified; femur normal size, one to two times as long as trochanter, attaching to patella basally; patella about as long as femur, not enlarged; tibia with two slightly longer and stronger setae, directed anteriorly, trichobothria with 3 trichobothria; cymbium pale orange, completely fused with bulb, no seam visible; bulb pale orange, stout, spherical, distal part with Brown, plate-like extension, half-circle shaped and small membranous apophyses.
Xyphinus distortus, male habitus, dorsal view (image by YK, specimen ID: ---12061)

xyphidistomphabd12061YK.tif

Xyphinus distortus, male habitus, ventral view (image by YK, specimen ID: ---12061)

xyphidistomphabv12061YK.tif

Xyphinus distortus, male habitus, lateral view (image by YK, specimen ID: ---12061)

xyphidistomphabl12061YK.tif

Xyphinus distortus, male carapace, dorsal view (image by YK, specimen ID: ---12061)

xyphidistompcard12061YK.tif

Xyphinus distortus, male carapace, ventral view (image by YK, specimen ID: ---12061)

xyphidistompcarv12061YK.tif

Xyphinus distortus, male carapace, lateral view (image by YK, specimen ID: ---12061)

xyphidistompcarl12061YK.tif

Xyphinus distortus, male carapace, anterior view (image by YK, specimen ID: ---12061)

xyphidistompcara12061YK.tif

Xyphinus distortus, male abdomen, ventral view (image by YK, specimen ID: ---12061)

xyphidistompabdv12061YK.tif

Xyphinus distortus, male abdomen, anterior view (image by YK, specimen ID: ---12061)

xyphidistompabda12061YK.tif

Xyphinus distortus, male palp, prolateral view (image by YK, specimen ID: ---12061)

xyphidistomppalp12061YK.tif

Xyphinus distortus, male palp, retrolateral view (image by YK, specimen ID: ---12061)

xyphidistomppalr12061YK.tif

Xyphinus distortus, male palp, prolateral view (image by YK, specimen ID: ---12061)

xyphidistomdpalp12061YK.tif

Xyphinus distortus, male palp, ventral view (image by YK, specimen ID: ---12061)

xyphidistomdpalv12061YK.tif

Xyphinus distortus, male palp, retrolateral view (image by YK, specimen ID: ---12061)

xyphidistomdpalr12061YK.tif


            Female (PBI_OON 12061). Total length 1.89. As in male except as noted. CEPHALOTHORAX: Carapace pars cephalica slightly elevated in lateral view, posterior margin with four lobate, sclerotized extensions, dorsal from the pedicel. Sternum a pair of sclerotized impressions opposite coxae III, extending fan-like anteriorly. Sickle-shaped structures extending fan-like anteriorly. Endites anteromedian tip unmodified. Female palp claws absent; spines absent; tarsus unmodified; trichobothria tibia with three trichobothria. ABDOMEN: Pedicel scutal ridge interrupted. Epigastric scutum strongly protruding. Postepigastric scutum not fused to epigastric scutum. LEGS: metatarsi leg III and IV with harpoon-like setae prolaterally spur on dorsal apex. Leg spines absent. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria examined with Compound microscope. GENITALIA: Shape: the posterior margin of the epigastric scutum is lined with numerous setae. The margin of the postepigastric scutum is strongly sclerotized and thick. In its middle is a very broad tongue-like structure visible.
Xyphinus distortus, female habitus, dorsal view (image by YK, specimen ID: ---32590)

xyphidistofphabd32590YK.tif

Xyphinus distortus, female habitus, ventral view (image by YK, specimen ID: ---32590)

xyphidistofphabv32590YK.tif

Xyphinus distortus, female habitus, lateral view (image by YK, specimen ID: ---32590)

xyphidistofphabl32590YK.tif

Xyphinus distortus, female carapace, dorsal view (image by YK, specimen ID: ---32590)

xyphidistofpcard32590YK.tif

Xyphinus distortus, female carapace, ventral view (image by YK, specimen ID: ---32590)

xyphidistofpcarv32590YK.tif

Xyphinus distortus, female carapace, lateral view (image by YK, specimen ID: ---32590)

xyphidistofpcarl32590YK.tif

Xyphinus distortus, female carapace, anterior view (image by YK, specimen ID: ---32590)

xyphidistofpcara32590YK.tif

Xyphinus distortus, female abdomen, ventral view (image by YK, specimen ID: ---32590)

xyphidistofpabdv32590YK.tif

Xyphinus distortus, female abdomen, lateral view (image by YK, specimen ID: ---32590)

xyphidistofpabdl32590YK.tif

Xyphinus distortus, female epigynum, epigynal area, ventral view (image by YK, specimen ID: ---32590)

xyphidistofpepiv32590YK.tif

Xyphinus distortus, female epigynum, epigynal area, dorsal view (image by YK, specimen ID: ---32590)

xyphidistofpepid32590YK.tif

Xyphinus distortus, female epigynum, epigynal area, ventral view (image by YK, specimen ID: ---32590)

xyphidistofdepiv32590YK.tif

Xyphinus distortus, female epigynum, epigynal area, dorsal view (image by YK, specimen ID: ---32590)

xyphidistofdepid32590YK.tif

 

DISTRIBUTION

MALAYSIA
Xyphinus distortus coordinates
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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 00012069  MALAYSIA  Kelantan    1 km S Gua Musang railway station  1 Adult Female  Paratype  120  4.87536; 101.96847  rainforest  13 Jun 2004  Peter Schwendinger  MHNG 
PBI_OON 00012062  MALAYSIA  Kelantan    1 km S Gua Musang railway station  1 Adult Male  Paratype  120  4.87536; 101.96847  rainforest  13 Jun 2004  Peter Schwendinger  MHNG 
PBI_OON 00032590  MALAYSIA  Kelantan    1 km S Gua Musang railway station  6 Adult Female  Paratype  120  4.87536; 101.96847  rainforest  13 Jun 2004  Peter Schwendinger  MHNG 
PBI_OON 00012061  MALAYSIA  Kelantan    1 km S Gua Musang railway station  1 Adult Male  Holotype  120  4.87536; 101.96847  rainforest  13 Jun 2004  Peter Schwendinger  MHNG 
PBI_OON 00015448  MALAYSIA  Terengganu    Lake Kenyir, 5 km SW of dam, 50 km SW of Kuala Terengganu  1 Adult Male  Paratype  350  4.96667; 102.81667  rainforest  11 Jul 2001  A. Schultz, K. Vock  MHNG 
PBI_OON 00015419  MALAYSIA  Terengganu    Lake Kenyir, 5 km SW of dam, 50 km SW of Kuala Terengganu  1 Adult Female  Paratype  350  4.96667; 102.81667  rainforest  11 Jul 2001  A. Schultz, K. Vock  MHNG 


 
 
 
 
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