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(Female redundant descriptions removed)
Opopaea nadineae       Get publication

            Male (PBI_OON 4700). Total length 1.18. 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:0.049; PME:0.068; PLE:0.044, PME largest, ALE circular, PME squared, PLE circular; posterior eye row straight from both above and front; ALE separated by more than their diameter, ALE-PLE touching, PME touching throughout most of their length, PLE-PME touching. 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 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, evenly scattered, originating from small pits, 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, pointed posteriorly, inter-scutal membrane rows of small sclerotized platelets absent posteriorly; dorsum soft portions white, without color pattern. Book lung covers small, 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 lateral of pedicel, matted setae on anterior ventral abdomen in pedicel area absent, cuticular outgrowths near pedicel absent, scuto pedicel region less that diameter of pedicel, paired curved ridges connected medially by arc. 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, almost semicircular, covering nearly full length of abdominal length, fused to epigastric scutum, with short posteriorly directed lateral apodemes, anterior margin of postepigastric scutum with wide, elevated triangle of ridges. 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. Interscutal membrane with setae. Colulus represented only by setae. LEGS: yellow, 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 0.278 long, 0.138 wide, connection to femur at 0.55.; tibia trichobothria not examined; cymbium pale orange, 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 pale orange, 1 to 1.5 times as long as cymbium, slender, tapering apically, bulb ventrally strongly bulged with strong prolateral spine, tip spatulate with narrow prolateral incision and longitudinal ridge, fentestra small..
Opopaea nadineae, male abdomen, anterior view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male abdomen, ventral view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male carapace, anterior view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male carapace, prolateral view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male habitus, lateral view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male habitus, dorsal view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male palp, dorsal view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male palp, prolateral view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male palp, retrolateral view (image by BB, specimen ID: ---04700)


Opopaea nadineae, male abdomen, ventral view (image by BB, specimen ID: ---48270)


Opopaea nadineae, male chelicerae, ventral view (image by BB, specimen ID: ---48270)


Opopaea nadineae, male endites, ventral view (image by BB, specimen ID: ---48270)


Opopaea nadineae, male palp, dorsal view (image by BB, specimen ID: ---48270)


Opopaea nadineae, male palp, prolateral view (image by BB, specimen ID: ---48270)


Opopaea nadineae, male sperm pore, ventral view (image by BB, specimen ID: ---48270)


Opopaea nadineae, male sternum, ventral view (image by BB, specimen ID: ---48270)


            Female (PBI_OON 48269). Total length 1.48. As in male except as noted. CEPHALOTHORAX: Eyes aLE:0.053; PME:0.069; PLE:0.040. Endites anteromedian tip unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: Pedicel scuto pedicel region less than diameter of pedicel, paired curved ridges connected medially by arc. 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 nadineae, female abdomen, anterior view (image by BB, specimen ID: ---48269)


Opopaea nadineae, female abdomen, ventral view (image by BB, specimen ID: ---48269)


Opopaea nadineae, female carapace, prolateral view (image by BB, specimen ID: ---48269)


Opopaea nadineae, female epigynum, epigynal area, ventral view (image by BB, specimen ID: ---48269)


Opopaea nadineae, female habitus, dorsal view (image by BB, specimen ID: ---48269)


Opopaea nadineae, female habitus, lateral view (image by BB, specimen ID: ---48269)


Opopaea nadineae, female sternum, ventral view (image by BB, specimen ID: ---48269)




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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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