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OONOPIDAE SPECIES DESCRIPTION
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Prethopalpus alexanderi       Get publication



            Male (PBI_OON 46551). Total length 1.05. CEPHALOTHORAX: Carapace pale orange, without any pattern, ovoid in dorsal view, pars cephalica flat 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, sides slightly granulate, 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 in u-shaped row; 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, median projection absent; setae present, light, needle-like. Chilum absent. Eyes absent. Sternum longer than wide, pale orange, uniform, fused to carapace, median concavity absent, without radial furrows between coxae I-II, II-III, III-IV, furrow smooth, 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, lateral margin without infra-coxal grooves, distance between coxae approximately equal, extensions of pre-coxal triangles absent, lateral margins unmodified, without posterior hump; setae sparse, light, needle-like, evenly scattered, originating from small pits, without hair tufts. Mouthparts: Chelicerae, endites and labium pale orange. Chelicerae straight, anterior face unmodified; without teeth on both promargin and retromargin; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae light, needle-like, densest medially; paturon distal region unmodified, posterior surface unmodified, promargin unmodified, inner margin unmodified, laminate groove absent. Labium triangular, 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, serrula present in single row, anteromedian tip with one strong, tooth-like projection, posteromedian part unmodified, same as sternum in sclerotization, endites twice as long as wide, directed medially. ABDOMEN: cylindrical, 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, ovoid, without setae, anterolateral edge unmodified. Posterior spiracles 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, cuticular outgrowths near pedicel absent. Dorsal scutum weakly sclerotized, pale orange, 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 weakly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum weakly sclerotized, pale orange, long, almost rectangular, covering nearly full length 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. Postepigastric area setae present, light, needle-like. Spinneret scutum with fringe of stout 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 shorter than carapace, tibia I unmodified, tibia IV specialized hairs on ventral apex absent, tibia IV ventral scopula absent, metatarsi I and II meso-apical comb absent, metatarsi III and IV weak ventral scopula absent. Leg spines absent. 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 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 light, prolateral excavation absent; trochanter normal size, unmodified; femur normal size, two or more times as long as trochanter, without posteriorly rounded lateral dilation, attaching to patella subbasally; patella longer than femur, slightly larger than femur, without prolateral row of ridges, setae unmodified, patella ventrally slightly bulged with conical base; tibia trichobothria not examined; cymbium pale orange, ovoid in dorsal view, not fused with bulb, not extending beyond distal tip of bulb, plumose setae absent, without stout setae, without distal patch of setae; bulb pale orange, more than 2 times as long as cymbium, slender, tapering apically, bulb pear-shaped with narrow curled tip.
Prethopalpus alexanderi, male carapace, dorsal view (image by BB, specimen ID: ---46551)

prethalexampcard46551BB.tif

Prethopalpus alexanderi, male habitus, dorsal view (image by BB, specimen ID: ---46551)

prethalexamphabd46551BB.tif

Prethopalpus alexanderi, male palp, dorsal view (image by BB, specimen ID: ---46551)

prethalexamppald46551BB.tif

Prethopalpus alexanderi, male palp, prolateral view (image by BB, specimen ID: ---46551)

prethalexamppalp46551BB.tif

Prethopalpus alexanderi, male palp, retrolateral view (image by BB, specimen ID: ---46551)

prethalexamppalr46551BB.tif

Prethopalpus alexanderi, male habitus, lateral view (image by BB, specimen ID: ---46551)

prethalexamphabl46551BB.tif

Prethopalpus alexanderi, male habitus, ventral view (image by BB, specimen ID: ---46551)

prethalexamphabv46551BB.tif

Prethopalpus alexanderi, male abdomen, ventral view (image by BB, specimen ID: ---46551)

prethalexampabdv46551BB.tif

Prethopalpus alexanderi, male carapace, anterior view (image by BB, specimen ID: ---46551)

prethalexampcara46551BB.tif

Prethopalpus alexanderi, male sternum, ventral view (image by BB, specimen ID: ---46551)

prethalexampstev46551BB.tif

Prethopalpus alexanderi, male carapace, lateral view (image by BB, specimen ID: ---46551)

prethalexampcarl46551BB.tif

Prethopalpus alexanderi, male bulb, prolateral view (image by BB, specimen ID: ---46551)

prethalexampbulp46551BB.tif

 

DISTRIBUTION

AUSTRALIA
Prethopalpus alexanderi 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 Prethopalpus alexanderi, 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 00046551  AUSTRALIA  Western Australia    Exmouth Limestone, 9.4 km S Exmouth WGS84  1 Adult Male  Holotype  -20  -22.05000; 114.06666  bore  25 Jul 2008  J. Alexander, J. Cairnes  WAMP 


 
 
 
 
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