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OONOPIDAE SPECIES DESCRIPTION
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(Female redundant descriptions removed)
Opopaea millbrook       Get publication



            Male (PBI_OON 22884). Total length 1.23. 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: 0.047; PME:0.049; PLE:0.043, PME largest, ALE circular, PME squared, PLE circular; posterior eye row straight from both above and front; ALE separated by less than their radius, ALE-PLE touching, PME touching throughout most of their length, PLE-PME touching. Sternum longer than wide, orange-brown, uniform, not 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 only in furrows, 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; setae sparse, light, needle-like, densest laterally, 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 widely oval scutal ridge, 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 1/2 diameter of pedicel,paired scutal ridges shallow, just touching.. 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 concave with wide, shallow triangular extension.. 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, unmodified; furrow without omega-shaped insertions, without setae. Palp normal size, not strongly sclerotized, right and left palps symmetrical, proximal segments orange-brown; embolus dark, 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 0.228 long, 0.135 wide, connection to femur at 0.48.; 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 slightly bulged, tip broad with rectangular striated prolateral fold, fentestra small.
Opopaea millbrook, male abdomen, anterior view (image by BB, specimen ID: ---22884)

opopamillbmpabda22884BB.tif

Opopaea millbrook, male abdomen, ventral view (image by BB, specimen ID: ---22884)

opopamillbmpabdv22884BB.tif

Opopaea millbrook, male carapace, anterior view (image by BB, specimen ID: ---22884)

opopamillbmpcara22884BB.tif

Opopaea millbrook, male carapace, prolateral view (image by BB, specimen ID: ---22884)

opopamillbmpcarp22884BB.tif

Opopaea millbrook, male habitus, dorsal view (image by BB, specimen ID: ---22884)

opopamillbmphabd22884BB.tif

Opopaea millbrook, male habitus, lateral view (image by BB, specimen ID: ---22884)

opopamillbmphabl22884BB.tif

Opopaea millbrook, male palp, dorsal view (image by BB, specimen ID: ---22884)

opopamillbmppald22884BB.tif

Opopaea millbrook, male palp, prolateral view (image by BB, specimen ID: ---22884)

opopamillbmppalp22884BB.tif

Opopaea millbrook, male sternum, ventral view (image by BB, specimen ID: ---22884)

opopamillbmpstev22884BB.tif

Opopaea millbrook, male palp, retrolateral view (image by BB, specimen ID: ---22884)

opopamillbmppalr22884BB.tif

Opopaea millbrook, male endites, ventral view (image by BB, specimen ID: ---22884)

opopamillbmsendv22884BB.tif

Opopaea millbrook, male palp, dorsal view (image by BB, specimen ID: ---22884)

opopamillbmspald22884BB.tif

Opopaea millbrook, male palp, prolateral view (image by BB, specimen ID: ---22884)

opopamillbmspalp22884BB.tif

Opopaea millbrook, male sternum, ventral view (image by BB, specimen ID: ---22884)

opopamillbmsstev22884BB.tif


            Female (PBI_OON 23667). Total length 1.36. As in male except as noted. CEPHALOTHORAX: Eyes aLE: 0.051; PME:0.035; PLE:0.033, ALE largest. Endites anteromedian tip unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: Pedicel scuto-pedicel region 1/2 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 millbrook, female abdomen, anterior view (image by BB, specimen ID: ---23667)

opopamillbfpabda23667BB.tif

Opopaea millbrook, female carapace, anterior view (image by BB, specimen ID: ---23667)

opopamillbfpcara23667BB.tif

Opopaea millbrook, female abdomen, ventral view (image by BB, specimen ID: ---23667)

opopamillbfpabdv23667BB.tif

Opopaea millbrook, female carapace, prolateral view (image by BB, specimen ID: ---23667)

opopamillbfpcarp23667BB.tif

Opopaea millbrook, female epigynum, epigynal area, ventral view (image by BB, specimen ID: ---23667)

opopamillbfpepiv23667BB.tif

Opopaea millbrook, female habitus, dorsal view (image by BB, specimen ID: ---23667)

opopamillbfphabd23667BB.tif

Opopaea millbrook, female habitus, lateral view (image by BB, specimen ID: ---23667)

opopamillbfphabl23667BB.tif

Opopaea millbrook, female habitus, ventral view (image by BB, specimen ID: ---23667)

opopamillbfphabv23667BB.tif

 

DISTRIBUTION

AUSTRALIA
Opopaea millbrook 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 Opopaea millbrook, Discover Life Map
 

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 00023666  AUSTRALIA  South Australia    Millbrook Reservoir  1 Adult Male      -34.81666; 138.80000    22 Feb 2002  D. Hirst  SAMA 
PBI_OON 00022884  AUSTRALIA  South Australia    Millbrook Reservoir  1 Adult Male  Holotype    -34.81666; 138.80000    22 Feb 2002  D. Hirst  SAMA 
PBI_OON 00022887  AUSTRALIA  South Australia    Yarra Glen HS  1 Adult Male      -34.15833; 140.16638  eucalypt forest, litter  13 Nov 2004  Murray Valley Svy  SAMA 
PBI_OON 00023667  AUSTRALIA  South Australia    Millbrook Reservoir  1 Adult Female  Allotype    -34.81666; 138.80000  eucalypt forest, litter  22 Feb 2002  D. Hirst  SAMA 


 
 
 
 
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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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