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OONOPIDAE SPECIES DESCRIPTION
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(Female redundant descriptions removed)
Orchestina retiro       Get publication



            Male (PBI_OON 40483). Total length 1.00. CEPHALOTHORAX: Carapace yellow, without any pattern, ovoid in dorsal view, pars cephalica slightly elevated in lateral view, anteriorly narrowed to between 0.5 and 0.75 times its maximum width, 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, without radiating rows of pits; lateral margin straight, smooth, without denticles; plumose setae near posterior margin of pars thoracica absent; non-marginal pars cephalica setae present, scattered, only sockets were observed, but setae probably dark, needle-like; non-marginal pars thoracica setae only sockets were observed, but setae probably dark, needle-like; marginal setae absent. Clypeus margin unmodified, 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, dark, needle-like. Chilum absent. Eyes six, well developed, posterior eye row slightly recurved in front view, PME largest, ALE circular, PME oval, PLE circular; posterior eye row recurved from above; ALE separated by more than their diameter, ALE-PLE touching, PME touching throughout most of their length, PLE-PME separated by PME radius to PME diameter. Sternum as long as wide, yellow, uniform, not fused to carapace, median concavity absent, without radial furrows between coxae I-II, II-III, III-IV, radial furrow opposite coxae III absent, surface smooth, without pits, microsculpture covering entire surface, sickle-shaped structures absent, anterior margin unmodified, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, 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, dark, needle-like, evenly scattered, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium yellow. Chelicerae straight, anterior face with conical apophysis; without teeth on both promargin and retromargin; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae dark, evenly scattered; paturon inner margin with scattered setae, distal region unmodified, inner margin unmodified. Labium rectangular, not fused to sternum, anterior margin not indented at middle, same as sternum in sclerotization; with 6 or more setae on anterior margin, subdistal portion with unmodified setae. Endites distally not excavated, serrula present in single row, anteromedian tip unmodified, 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 pale white, without color pattern. Book lung covers large, round, without setae, anterolateral edge unmodified. Posterior spiracles not connected by groove. Pedicel tube medium, with fringe of setae, scuto-pedicel region unmodified, scutum absent, but abdomen extending anteriad of pedicel, plumose hairs absent, matted setae on anterior ventral abdomen in pedicel area absent, cuticular outgrowths near pedicel absent. Dorsal scutum absent. Epigastric scutum absent. Postepigastric scutum absent. Spinneret scutum absent. Dorsum setae present, dark, needle-like. Epigastric area setae uniform, dark, needle-like. Postepigastric area setae present, dark, needle-like. Spinneret scutum with fringe of needle-like setae. Dense patch of setae anterior to spinnerets absent. Colulus present. LEGS: white, without color pattern; femur IV thickened, much larger than femora I-III, patella plus tibia I near as long as carapace, tibia I unmodified, tibia I Emeritís glands absent, 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 spination (only surfaces bearing spines listed, all spines longer than segment width): metatarsi: IV d0-0-2. Tarsi I to IV superior claws tooth not examined in detail. Tarsi I to IV without inferior claw. Trichobothria examined with Stereo microscope; tibia: III three, IV three; metatarsus: each with one; at least two trichobothria on tibia I and II. GENITALIA: Epigastric region with sperm pore not visible; furrow without omega-shaped insertions, without setae. Palp normal size, not strongly sclerotized, right and left palps symmetrical, proximal segments white; embolus dark, 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 basally; patella shorter than femur, not enlarged, without prolateral row of ridges, setae unmodified; tibia with at least two trichobothria; cymbium yellow, 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 white, more than 2 times as long as cymbium, stout, tapering apically.
Orchestina retiro, male habitus, anterior view (image by MI, specimen ID: ---40483)

orcheretirmphaba40483MI.tif

Orchestina retiro, male habitus, lateral view (image by MI, specimen ID: ---40483)

orcheretirmphabl40483MI.tif

Orchestina retiro, male habitus, ventral view (image by MI, specimen ID: ---40483)

orcheretirmphabv40483MI.tif

Orchestina retiro, male habitus, dorsal view (image by MI, specimen ID: ---40483)

orcheretirmphabd40483MI.tif

 

DISTRIBUTION

BRAZIL
Orchestina retiro 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 Orchestina retiro, 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 00040483  BRAZIL  Para  Retiro  AAE Lago Grande  1 Adult Male      -2.39555; -55.77750    05 Oct 2008  C. Praxedes  MPEG 


 
 
 
 
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