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



            Male (PBI_OON 2309). CEPHALOTHORAX: Carapace pale orange, 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; non-marginal pars cephalica setae present, scattered, only sockets were observed; non-marginal pars thoracica setae present; 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. Chilum absent, specimen in bad condition, no legs only prosoma is present. 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 longer than wide, pale orange, 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 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 dark, evenly scattered; paturon inner margin with scattered setae, distal region unmodified, inner margin unmodified. Labium not fused to sternum, anterior margin not indented at middle, same as sternum in sclerotization, near pentagonal slightly swollen; 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: dorsum soft portions abdomen absent in holotype, paratype with wrinkled abdomen. Dorsal scutum absent. Epigastric scutum weakly sclerotized, not surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum absent. Spinneret scutum absent. LEGS: coxae legs absent. 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 pale orange; 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 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, stout, spherical.

            Female (PBI_OON 2304). As in male except as noted. CEPHALOTHORAX: Carapace non-marginal pars cephalica setae only sockets were observed. Chilum specimen in bad condition, prosoma and opisthosoma separated, only left leg II is present. Eyes posterior eye row slightly recurved in front view. Labium rectangular. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: ovoid, without long posterior extension, rounded posteriorly, inter-scutal membrane rows of small sclerotized platelets absent posteriorly; dorsum soft portions pale white, purple bands. 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, plumose hairs absent, matted setae on anterior ventral abdomen in pedicel area absent, cuticular outgrowths near pedicel absent, abdomen separated from prosoma. Epigastric scutum without lateral joints. Dorsum setae present. Postepigastric area setae present. Abdomen setae only sockets were observed, setae have been lost. Colulus present. LEGS: pale orange, without color pattern; coxae only left leg II is present. Leg spines absent. Tarsi I to IV superior claws tooth not examined in detail. Tarsi I to IV without inferior claw. Trichobothria examined with Stereo microscope; metatarsus: II one.
 

DISTRIBUTION

CHILE
Orchestina nahuelbuta 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 nahuelbuta, 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 00002304  CHILE  Región de la Araucanía  Provincia de Malleco  P. N. Nahuelbuta, Pichinahuel exit  1 Juvenile sex unknown    1182  -37.80473; -73.03520  Araucaria araucana  06 Dec 2001  E. Arias et al.  CAS 
PBI_OON 00002304  CHILE  Región de la Araucanía  Provincia de Malleco  P. N. Nahuelbuta, Pichinahuel exit  1 Adult Female  Holotype  1182  -37.80473; -73.03520  Araucaria araucana  06 Dec 2001  E. Arias et al.  CAS 
PBI_OON 00002309  CHILE  Región de la Araucanía  Provincia de Malleco  P. N. Nahuelbuta, Pichinahuel exit  1 Adult Male  Paratype  1182  -37.80473; -73.03520  Araucaria araucana  22 Nov 2004  J. E. Barriga  CAS 
PBI_OON 00002308  CHILE  Región de la Araucanía  Provincia de Malleco  P. N. Nahuelbuta, Pichinahuel exit  1 Adult Female  Paratype  1182  -37.80473; -73.03520  Araucaria araucana  06 Dec 2001  E. Arias et al.  CAS 
PBI_OON 00002308  CHILE  Región de la Araucanía  Provincia de Malleco  P. N. Nahuelbuta, Pichinahuel exit  1 Adult Male  Paratype  1182  -37.80473; -73.03520  Araucaria araucana  06 Dec 2001  E. Arias et al.  CAS 


 
 
 
 
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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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