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OONOPIDAE SPECIES DESCRIPTION
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Opopaea rixi       Get publication



            Male (PBI_OON 23633). Total length 1.35. CEPHALOTHORAX: Carapace orange-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 angular 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 striated, thorax without depressions, fovea absent, without radiating rows of pits; lateral margin straight, rebordered, with blunt 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, curved downwards in front view, sloping forward 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: 0.066; PME:0.070; PLE:0.055, PME largest, ALE circular, PME oval, PLE circular; posterior eye row recurved from above, straight from front; ALE separated by less than their radius, ALE-PLE separated by less than ALE radius, PME touching for less than half their length, PLE-PME separated by less than PME radius. Sternum longer than wide, orange-brown, uniform, fused to carapace, median concavity absent, with radial furrows between coxae I-II, II-III, III-IV, furrow with rows of small pits, 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 with infra-coxal grooves and anterior and posterior openings, distance between coxae approximately equal, extensions of pre-coxal triangles absent, lateral margins unmodified, without posterior hump, radial furrow shallow; setae sparse, light, needle-like, evenly scattered, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium orange-brown. 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, evenly scattered; paturon distal region unmodified, posterior surface unmodified, promargin unmodified, inner margin unmodified, laminate groove present. Labium triangular, fused to sternum, anterior margin indented at middle, same as sternum in sclerotization; with 3-5 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. 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, ovoid, without setae, anterolateral edge unmodified. Posterior spiracles connected by groove. Pedicel tube short, with small, dorsolateral, triangular extensions, scuto-pedicel region with paired curved scutal ridges, 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, scuto-pedicel region about diameter of pedicel, paired scutal ridges shallow, not connected.. 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, orange-brown, long, semicircular, covering nearly full length of abdominal length, fused to epigastric scutum, anterior margin unmodified, with long posteriorly directed lateral apodemes, between lateral apodemes slitghtly concave. 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, 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 orange-brown; embolus light, prolateral excavation present; trochanter normal size, unmodified; femur normal size, two or more times as long as trochanter, without posteriorly rounded lateral dilation, attaching to patella medially; patella longer than femur, much larger than femur, without prolateral row of ridges, setae unmodified, palpal patella 0.282 long, 0.149 wide, connection to femur at 0.56.; tibia trichobothria not examined; cymbium orange-brown, narrow in dorsal view, completely fused with bulb, no seam visible, not extending beyond distal tip of bulb, covered with plumose setae, without stout setae, without distal patch of setae; bulb orange-brown, 1 to 1.5 times as long as cymbium, slender, tapering apically, bulb ventrally strongly bulged, tip narrow with small prolateral incision, fentestra small.
Opopaea rixi, male abdomen, ventral view (image by BB, specimen ID: ---18031)

opoparixi9msabdv18031BB.tif

Opopaea rixi, male embolus, dorsal view (image by BB, specimen ID: ---18031)

opoparixi9msembd18031BB.tif

Opopaea rixi, male endites, ventral view (image by BB, specimen ID: ---18031)

opoparixi9msendv18031BB.tif

Opopaea rixi, male palp, dorsal view (image by BB, specimen ID: ---18031)

opoparixi9mspald18031BB.tif

Opopaea rixi, male palp, prolateral view (image by BB, specimen ID: ---18031)

opoparixi9mspalp18031BB.tif

Opopaea rixi, male pedicel, ventral view (image by BB, specimen ID: ---18031)

opoparixi9mspedv18031BB.tif

Opopaea rixi, male sternum, ventral view (image by BB, specimen ID: ---18031)

opoparixi9msstev18031BB.tif

Opopaea rixi, male abdomen, anterior view (image by BB, specimen ID: ---23633)

opoparixi9mpabda23633BB.tif

Opopaea rixi, male abdomen, ventral view (image by BB, specimen ID: ---23633)

opoparixi9mpabdv23633BB.tif

Opopaea rixi, male carapace, anterior view (image by BB, specimen ID: ---23633)

opoparixi9mpcara23633BB.tif

Opopaea rixi, male carapace, prolateral view (image by BB, specimen ID: ---23633)

opoparixi9mpcarp23633BB.tif

Opopaea rixi, male habitus, dorsal view (image by BB, specimen ID: ---23633)

opoparixi9mphabd23633BB.tif

Opopaea rixi, male palp, dorsal view (image by BB, specimen ID: ---23633)

opoparixi9mppald23633BB.tif

Opopaea rixi, male habitus, lateral view (image by BB, specimen ID: ---23633)

opoparixi9mphabl23633BB.tif

Opopaea rixi, male palp, prolateral view (image by BB, specimen ID: ---23633)

opoparixi9mppalp23633BB.tif

Opopaea rixi, male palp, retrolateral view (image by BB, specimen ID: ---23633)

opoparixi9mppalr23633BB.tif

Opopaea rixi, male sternum, ventral view (image by BB, specimen ID: ---23633)

opoparixi9mpstev23633BB.tif


            Female (PBI_OON 23634). Total length 1.57. As in male except as noted. CEPHALOTHORAX: Eyes aLE: 0.073; PME:0.061; PLE:0.052, ALE largest; posterior eye row straight from above. Sternum furrow with row of large pits, radial furrow shallow. Endites anteromedian tip unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: Pedicel scuto-pedicel region about diameter of pedicel, paired scutal ridges shallow, just touching.. Postepigastric scutum not fused to epigastric scutum. LEGS: Leg spines absent. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria not examined.
Opopaea rixi, female abdomen, anterior view (image by BB, specimen ID: ---23634)

opoparixi9fpabda23634BB.tif

Opopaea rixi, female abdomen, ventral view (image by BB, specimen ID: ---23634)

opoparixi9fpabdv23634BB.tif

Opopaea rixi, female carapace, anterior view (image by BB, specimen ID: ---23634)

opoparixi9fpcara23634BB.tif

Opopaea rixi, female carapace, prolateral view (image by BB, specimen ID: ---23634)

opoparixi9fpcarp23634BB.tif

Opopaea rixi, female habitus, dorsal view (image by BB, specimen ID: ---23634)

opoparixi9fphabd23634BB.tif

Opopaea rixi, female habitus, lateral view (image by BB, specimen ID: ---23634)

opoparixi9fphabl23634BB.tif

Opopaea rixi, female sternum, ventral view (image by BB, specimen ID: ---23634)

opoparixi9fpstev23634BB.tif

Opopaea rixi, female epigynum, epigynal area, ventral view (image by BB, specimen ID: ---23634)

opoparixi9fpepiv23634BB.jpg

Opopaea rixi, female epigynum, epigynal area, dorsal view (image by BB, specimen ID: ---23634)

opoparixi9fpepid23634BB.tif

 

DISTRIBUTION

AUSTRALIA
Opopaea rixi coordinates
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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 00018032  AUSTRALIA  Western Australia    Hepburn Heights, site HH4  3 Adult Male      -31.81583; 115.77805    13 Jul 1995  M. Harvey, J. Waldock  WAMP 
PBI_OON 00023633  AUSTRALIA  Western Australia    Hepburn Heights, site HH4  1 Adult Male  Holotype    -31.81583; 115.77805  litter  25 Sept 1995  M. Harvey, J. Waldock  WAMP 
PBI_OON 00018031  AUSTRALIA  Western Australia    Hepburn Heights, site HH4  8 Adult Female      -31.81583; 115.77805  litter  25 Sept 1995  M. Harvey, J. Waldock  WAMP 
PBI_OON 00018031  AUSTRALIA  Western Australia    Hepburn Heights, site HH4  5 Adult Male      -31.81583; 115.77805  litter  25 Sept 1995  M. Harvey, J. Waldock  WAMP 
PBI_OON 00018032  AUSTRALIA  Western Australia    Hepburn Heights, site HH4  10 Adult Female      -31.81583; 115.77805  litter  13 Jul 1995  M. Harvey, J. Waldock  WAMP 
PBI_OON 00023634  AUSTRALIA  Western Australia    Hepburn Heights, site HH4  1 Adult Female  Allotype    -31.81583; 115.77805  litter  25 Sept 1995  M. Harvey, J. Waldock  WAMP 


 
 
 
 
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