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OONOPIDAE SPECIES DESCRIPTION
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(Female redundant descriptions removed)
Aposphragisma salewskii       Get publication



            Male (PBI_OON00031351). Total length 1.90. CEPHALOTHORAX: Carapace red-brown, without any pattern, ovoid in dorsal view, pars cephalica slightly 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 granulate, sides strongly reticulate, thorax without depressions, fovea absent, carapace margin: sluice restricted to posterior margin, 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 in u-shaped row, setae arranged in a long u-shaped row reaching posterior edge of pars cephalica; each setae originating from the middle of a pitlike structure with partly swollen edges, especially pronounced at posterior edge of pars cephalica, where hair bases are modified to pointed denticles; non-marginal pars thoracica setae absent; marginal setae light, needle-like, denticles at carapace margin represent modified hair bases; setae originating from anterior face of denticles, pointing anteriorly. Clypeus sinuous 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, a pair of long, needle-like setae on each half of the clypeus, with the inner ones being longer than the outer ones. Chilum absent. Eyes six, well developed, ALE largest, all eyes oval; posterior eye row recurved from above, procurved from front; ALE separated by their radius to diameter, ALE-PLE separated by less than ALE radius, PME touching throughout most of their length, PLE-PME separated by less than PME radius. Sternum longer than wide, red-brown, uniform, fused to carapace, median concavity absent, with radial furrows between coxae I-II, II-III, III-IV, radial furrow opposite coxae III absent, surface finely reticulate, without pits, microsculpture everywhere but middle, sickle-shaped structures absent, anterior margin with continuous transverse groove, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, anterior corner unmodified, distance between coxae approximately equal, lateral margins unmodified, without posterior hump, infra-coxal grooves present, but not possible to assess whether openings are present or not; radial furrows between coxae I-II, II-III and III-IV only very weakly developed, rather appearing as indentions of sternum margin; sternum microsculptures lobed / blossom-shaped; sternum surface setae originating from middle of microsculptures, marginal setae originating from surface, smooth middle strip without setae; posterior edge of sternum protruding as single extension, covered with blunt denticles (i.e. modified hair bases); setae abundant, light, needle-like, evenly scattered, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium red-brown. Chelicerae straight, inner margin of paturon anterior face distally with small toothlike projection (outgrowth of paturon promargin), pointing inwards; promargin without teeth; fangs without tooth-like projections, directed posteriorly, shape normal, without prominent basal process, tip unmodified; setae light, needle-like, evenly scattered; paturon distal region unmodified, posterior surface unmodified, promargin with row of flattened setae, inner margin unmodified. Labium triangular, fused to sternum, anterior margin deeply incised, same as sternum in sclerotization; subdistal portion with unmodified setae, ventral surface with 5 needle-like setae: two subdistal setae (one on each side of labium incision) and a transverse line of 3 more proximal setae. Endites distally not excavated, anteromedian tip unmodified, posteromedian part unmodified, same as sternum in sclerotization, outer margin subdistally with a pair of long setae, distally flattened and feathered and tips bent inwards. 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, elongated, about 3-4x longer than wide, slightly dumbbell shaped, darker brown than surroundings (the latter being true for both known males of A. salewskii, but in other species of the genus colouration of booklung covers showing intra-specific variation). Posterior spiracles connected by groove. Pedicel tube short, ribbed, scuto-pedicel region with widely oval scutal ridge, scutum not extending far dorsal of pedicel, plumose hairs absent, matted setae on anterior ventral abdomen in pedicel area absent, dorsal part of epigastric scutum with subterminal ridge (=widely oval scutal ridge). Dorsal scutum strongly sclerotized, red-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, surface smooth, but pitlike surrounding of hair bases giving a punctate impression. Epigastric scutum strongly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum strongly sclerotized, red-brown, almost 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 long setae. Dense patch of setae anterior to spinnerets absent. Interscutal membrane with setae. Colulus present. LEGS: orange-brown, without color pattern; femur IV not thickened, same size as femora I-III, patella plus tibia I shorter than carapace, tibia I unmodified, tibia IV ventral scopula absent, metatarsi I and II meso-apical comb absent , metatarsi III and IV weak ventral scopula absent, femora in dorsal view: femora I-II procurved, femur III more or less straight, femur IV recurved, tibiae tibia III & IV with a cluster of special hairs on ventral apex, metatarsi metatarsi III & IV with a cluster of dagger like hairs on ventral apex serrated lateral margins; dorsal apex of metatarsi I-IV with small, shieldlike appendage. 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 small, oval, situated at level of anterior spiracles, rebordered; furrow without omega-shaped insertions, without setae. Palp normal size, not strongly sclerotized, right and left palps symmetrical, proximal segments pale orange; embolus dark, prolateral excavation absent; femur normal size, two or more times as long as 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 3 trichobothria; cymbium pale orange, ovoid in dorsal view, fused with bulb but with clearly defined seam between, not extending beyond distal tip of bulb, plumose setae absent, with distal patch of setae; bulb pale orange, 1 to 1.5 times as long as cymbium, stout, tapering apically, distal part male palp "gamasomorphic"; bulb apically bearing two processes (embolus and conductor): embolus and conductor both long, laminar and tapering, being closely associated over most of their length.
Aposphragisma salewskii, male habitus, dorsal view (image by MT, specimen ID: ---31351)

apospsalewmphabd31351MT.tif

Aposphragisma salewskii, male habitus, lateral view (image by MT, specimen ID: ---31351)

apospsalewmphabl31351MT.tif

Aposphragisma salewskii, male habitus, ventral view (image by MT, specimen ID: ---31351)

apospsalewmphabv31351MT.tif

Aposphragisma salewskii, male abdomen, lateral view (image by MT, specimen ID: ---31351)

apospsalewmpabdl31351MT.tif

Aposphragisma salewskii, male abdomen, posterior view (image by MT, specimen ID: ---31351)

apospsalewmpabdT31351MT.tif

Aposphragisma salewskii, male abdomen, ventral view (image by MT, specimen ID: ---31351)

apospsalewmpabdv31351MT.tif

Aposphragisma salewskii, male carapace, anterior view (image by MT, specimen ID: ---31351)

apospsalewmpcara31351MT.tif

Aposphragisma salewskii, male carapace, dorsal view (image by MT, specimen ID: ---31351)

apospsalewmpcard31351MT.tif

Aposphragisma salewskii, male carapace, lateral view (image by MT, specimen ID: ---31351)

apospsalewmpcarl31351MT.tif

Aposphragisma salewskii, male carapace, retrolateral view (image by MT, specimen ID: ---31351)

apospsalewmpcarr31351MT.tif

Aposphragisma salewskii, male sternum, ventral view (image by MT, specimen ID: ---31351)

apospsalewmpstev31351MT.tif

 

DISTRIBUTION

SINGAPORE
Aposphragisma salewskii 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 Aposphragisma salewskii, 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 00031387  SINGAPORE  Singapore    Bukit Timah  1 Adult Male  Holotype    1.35470; 103.77605    21 Feb 1983  Deeleman, Christa  RMNH 
PBI_OON 00031351  SINGAPORE  Singapore    Bukit Timah  1 Adult Male  Paratype    1.35470; 103.77605    21 Feb 1983  Deeleman, Christa  RMNH 


 
 
 
 
The American Museum of Natural History, New York, in collaboration with
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The Field Museum of Natural History, Chicago   George Washington University, Washington DC
 
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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.
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