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OONOPIDAE SPECIES DESCRIPTION
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Niarchos rheimsae       Get publication



            Female (PBI_OON 37831). Total length 1.82. CEPHALOTHORAX: Carapace orange, without any pattern, elongate oval 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, posterolateral surface without spikes, surface of elevated portion of pars cephalica smooth, sides finely reticulate, 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 dark, needle-like, present, scattered; non-marginal pars thoracica setae absent; marginal setae dark, needle-like. Clypeus margin slightly rebordered, curved downwards in front view, vertical in lateral view, low, ALE separated from edge of carapace by less than their radius, median projection absent; setae present, dark, needle-like. Chilum absent. Eyes six, reduced, tiny, posterior eyes reduced in size, posterior laterals tiny, ALE largest, all eyes oval; posterior eye row procurved from both above and front; ALE separated by less than their radius, ALE-PLE separated by less than ALE radius, PME separated by their radius to diameter, PLE-PME separated by PME radius to PME diameter. Sternum longer than wide, pale orange, uniform, not fused to carapace, median concavity absent, with radial furrows between coxae I-II, II-III, III-IV, furrow smooth, radial furrow opposite coxae III absent, surface smooth, without pits, microsculpture covering entire surface, sickle-shaped structures absent, anterior margin unmodified, posterior margin not extending posteriorly of coxae IV, lateral margin without infra-coxal grooves, distance between coxae approximately equal, extensions of pre-coxal triangles present, lateral margins unmodified, without posterior hump, sternum followed posteriorly by small ventral pedicel sclerite; setae sparse, dark, needle-like, densest laterally, originating from surface. Mouthparts: Chelicerae, endites and labium pale orange. Chelicerae straight, anterior face with swelling; without teeth on both promargin and retromargin; fangs directed medially, shape normal, without prominent basal process, tip unmodified; setae dark, needle-like, densest medially; paturon inner margin with brush of short thorn-like seta, distal region abruptly narrowed, posterior surface unmodified, promargin unmodified, inner margin unmodified, laminate groove absent. Labium triangular, not fused to sternum, anterior margin indented at middle; 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. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: cylindrical, 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, unmodified, scuto-pedicel region unmodified, 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. Dorsal scutum absent. Epigastric scutum weakly sclerotized, not surrounding pedicel, not protruding, small lateral sclerites absent, without lateral joints. Postepigastric scutum weakly sclerotized, yellow, short, only around epigastric furrow, not fused to epigastric scutum, anterior margin unmodified, with long posteriorly directed lateral apodemes. Spinneret scutum present, incomplete ring, consisting of two small lateral patches bearing setae. 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 long setae. Dense patch of setae anterior to spinnerets absent. Colulus absent. 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 spination (only surfaces bearing spines listed, all spines longer than segment width): tibiae: IV v0-0-2. Tarsi I to IV superior claws tooth not examined in detail. Tarsi I to IV without inferior claw. Trichobothria not examined. GENITALIA: Shape: postepigastric scutum with long apodemes bearing sinuous anterior margins; anterior receptaculum apparently enlarged, membranous.
Niarchos rheimsae, female carapace, dorsal view (image by ND, specimen ID: ---37831)

Niarcrheimfpcard37831ND.tif

Niarchos rheimsae, female carapace, lateral view (image by ND, specimen ID: ---37831)

Niarcrheimfpcarl37831ND.tif

Niarchos rheimsae, female epigynum, epigynal area, ventral view (image by ND, specimen ID: ---37831)

Niarcrheimfpepiv37831ND.tif

Niarchos rheimsae, female habitus, anterior view (image by ND, specimen ID: ---37831)

Niarcrheimfphaba37831ND.tif

Niarchos rheimsae, female habitus, dorsal view (image by ND, specimen ID: ---37831)

Niarcrheimfphabd37831ND.tif

Niarchos rheimsae, female habitus, lateral view (image by ND, specimen ID: ---37831)

Niarcrheimfphabl37831ND.tif

Niarchos rheimsae, female habitus, ventral view (image by ND, specimen ID: ---37831)

Niarcrheimfphabv37831ND.tif

Niarchos rheimsae, female internal female genitalia, dorsal view (image by ND, specimen ID: ---37831)

Niarcrheimfpifgd37831ND.tif

Niarchos rheimsae, female internal female genitalia, ventral view (image by ND, specimen ID: ---37831)

Niarcrheimfpifgv37831ND.tif

Niarchos rheimsae, female sternum, ventral view (image by ND, specimen ID: ---37831)

Niarcrheimfpstev37831ND.tif

 

DISTRIBUTION

ECUADOR
Niarchos rheimsae 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 00037831  ECUADOR  Manabi    73 km NE Chone, 85 km W Santo Domingo  1 Adult Female  Holotype  300  -0.23196; -79.62018  forest litter  12 Jun 1976  S., J. Peck  FMNH 


 
 
 
 
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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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