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OONOPIDAE SPECIES DESCRIPTION
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Niarchos cotopaxi       Get publication



            Male (PBI_OON 10202). Total length 2.05. 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, anterolateral corners with slightly sclerotized triangular projections, 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 undivided, a tiny triangle. Eyes six, reduced, tiny, posterior eyes reduced in size, much smaller than anterior laterals, ALE largest, all eyes oval; posterior eye row straight from above, procurved from front; ALE separated by less than their radius, ALE-PLE separated by less than ALE radius, PME separated by less than their radius, PLE-PME separated by less than PME radius. 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 finely reticulate, without pits, microsculpture covering entire surface, sickle-shaped structures absent, anterior margin unmodified, posterior margin not extending posteriorly of coxae IV, anterior corner unmodified, lateral margin without infra-coxal grooves, distance between coxae approximately equal, extensions of pre-coxal triangles present, lateral margins unmodified, without posterior hump; setae sparse, dark, needle-like, densest laterally, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium pale orange. Chelicerae straight, anterior face with swelling; without teeth on both promargin and retromargin; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae dark, needle-like, densest medially; paturon inner margin with scattered setae, 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, 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 with one pair of backward pointing spines, posteromedian part unmodified, same as sternum in sclerotization, with posteriorly directed process shaped like duck's beak. 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, ribbed, scuto-pedicel region unmodified, scutum 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 strongly sclerotized, pale orange, without color pattern, covering more than 3/4 of abdomen, more than 1/2 to most of abdomen width, not fused to epigastric scutum, middle surface finely reticulate, sides finely reticulate, anterior half without projecting denticles, narrowed anteriorly. Epigastric scutum strongly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum strongly sclerotized, pale orange, long, almost rectangular, covering about 2/3 of abdominal length, fused to epigastric scutum, anterior margin unmodified, without posteriorly directed lateral apodemes. Spinneret scutum present, incomplete ring, represented only by two small, lateral sclerotized, setae-bearing patches. 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. Interscutal membrane with setae. 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: III, IV v0-0-1p. 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, circular, 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 pale orange; embolus dark, prolateral excavation absent, short, directed retrolaterally; 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 about as long as femur, slightly larger than femur, without prolateral row of ridges, setae unmodified; tibia trichobothria not examined; cymbium pale orange, ovoid in dorsal view, completely fused with bulb, no seam visible, not extending beyond distal tip of bulb, plumose setae absent, without stout setae, without distal patch of setae; bulb pale orange, 1 to 1.5 times as long as cymbium, stout, elongated, with strong basal apophysis on retrolateral side.
Niarchos cotopaxi, male carapace, dorsal view (image by ND, specimen ID: ---10202)

Niarccotopmpcard10202ND.tif

Niarchos cotopaxi, male carapace, lateral view (image by ND, specimen ID: ---10202)

Niarccotopmpcarl10202ND.tif

Niarchos cotopaxi, male habitus, anterior view (image by ND, specimen ID: ---10202)

Niarccotopmphaba10202ND.tif

Niarchos cotopaxi, male habitus, dorsal view (image by ND, specimen ID: ---10202)

Niarccotopmphabd10202ND.tif

Niarchos cotopaxi, male habitus, lateral view (image by ND, specimen ID: ---10202)

Niarccotopmphabl10202ND.tif

Niarchos cotopaxi, male habitus, ventral view (image by ND, specimen ID: ---10202)

Niarccotopmphabv10202ND.tif

Niarchos cotopaxi, male palp, prolateral view (image by ND, specimen ID: ---10202)

Niarccotopmppalp10202ND.tif

Niarchos cotopaxi, male palp, retrolateral view (image by ND, specimen ID: ---10202)

Niarccotopmppalr10202ND.tif

Niarchos cotopaxi, male palp, ventral view (image by ND, specimen ID: ---10202)

Niarccotopmppalv10202ND.tif

Niarchos cotopaxi, male sperm pore, ventral view (image by ND, specimen ID: ---10202)

Niarccotopmpspov10202ND.tif

Niarchos cotopaxi, male sternum, ventral view (image by ND, specimen ID: ---10202)

Niarccotopmpstev10202ND.tif

Niarchos cotopaxi, male embolus, retrolateral view (image by ND, specimen ID: ---10202)

Niarccotopmpembr10202ND.tif

Niarchos cotopaxi, male embolus, ventral view (image by ND, specimen ID: ---10202)

Niarccotopmpembv10202ND.tif


            Female (PBI_OON 10202). Total length 2.34. As in male except as noted. CEPHALOTHORAX: Chilum a wide triangle. Eyes posterior eyes reduced in size, much smaller than anterior laterals. Sternum sternum followed posteriorly by small ventral pedicel sclerite. Endites anteromedian tip unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: Pedicel unmodified, scutum not extending far dorsal of pedicel. Dorsal scutum absent. Epigastric scutum weakly sclerotized, not surrounding pedicel, without lateral joints. Postepigastric scutum weakly sclerotized, yellow, short, only around epigastric furrow, not fused to epigastric scutum. Spinneret scutum consisting of two small lateral patches bearing setae. LEGS: Leg spination (only surfaces bearing spines listed, all spines longer than segment width): tibiae: III v0-0-1p; IV v0-1p-1p. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria not examined. GENITALIA: Shape: anterior elements visible through epigastric scutum forming inverted Y flanked laterally by anterior receptaculum.
Niarchos cotopaxi, female carapace, dorsal view (image by ND, specimen ID: ---00396)

Niarccotopfpcard00396ND.tif

Niarchos cotopaxi, female carapace, lateral view (image by ND, specimen ID: ---00396)

Niarccotopfpcarl00396ND.tif

Niarchos cotopaxi, female epigynum, epigynal area, ventral view (image by ND, specimen ID: ---00396)

Niarccotopfpepiv00396ND.tif

Niarchos cotopaxi, female habitus, anterior view (image by ND, specimen ID: ---00396)

Niarccotopfphaba00396ND.tif

Niarchos cotopaxi, female habitus, dorsal view (image by ND, specimen ID: ---00396)

Niarccotopfphabd00396ND.tif

Niarchos cotopaxi, female habitus, lateral view (image by ND, specimen ID: ---00396)

Niarccotopfphabl00396ND.tif

Niarchos cotopaxi, female habitus, ventral view (image by ND, specimen ID: ---00396)

Niarccotopfphabv00396ND.tif

Niarchos cotopaxi, female internal female genitalia, dorsal view (image by ND, specimen ID: ---00396)

Niarccotopfpifgd00396ND.tif

Niarchos cotopaxi, female internal female genitalia, ventral view (image by ND, specimen ID: ---00396)

Niarccotopfpifgv00396ND.tif

Niarchos cotopaxi, female sternum, ventral view (image by ND, specimen ID: ---00396)

Niarccotopfpstev00396ND.tif

 

DISTRIBUTION

ECUADOR
Niarchos cotopaxi coordinates
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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 00029616  ECUADOR  Cotopaxi    45 km NE Latacunga  1 Adult Male    3700  -0.54988; -78.77675  shrub, grass paramo  19 Jul 1985  S., J. Peck  AMNH 
PBI_OON 00000396  ECUADOR  Cotopaxi    Cotopaxi National Park, along road to Laguna de Limpiopungo  1 Adult Female    3652  -0.61361; -78.47277  moss  03 Dec 2009  Niarchos expedition, N. Duperre, E. Tapia  AMNH 
PBI_OON 00000393  ECUADOR  Cotopaxi    Cotopaxi National Park, Laguna de Limpiopungo  1 Adult Female    3865  -0.61674; -78.46674  moss  03 Dec 2009  Niarchos expedition, N. Duperre, E. Tapia  AMNH 
PBI_OON 00010214  ECUADOR  Cotopaxi    Volcan Cotopaxi, NNE Latacunga  1 Adult Male    3353  -0.68365; -78.43572  Paramo moss, shrub litter  23 Jun 1975  S. Peck  FMNH 
PBI_OON 00000393  ECUADOR  Cotopaxi    Cotopaxi National Park, Laguna de Limpiopungo  2 Adult Male    3865  -0.61674; -78.46674  Paramo moss, shrub litter  03 Dec 2009  Niarchos expedition, N. Duperre, E. Tapia  AMNH 
PBI_OON 00030551  ECUADOR  Cotopaxi    Laguna de Limpiopungo, Parque Nacional Cotopaxi  1 Adult Female    3830  -0.61471; -78.47341  Paramo moss, shrub litter  09 Dec 2009  Niarchos Expedition, M. Ramirez, C. Grismado, M. Izquierdo, F. Labarque  MACN 
PBI_OON 00010202  ECUADOR  Cotopaxi    Volcan Cotopaxi, NNE Latacunga  1 Adult Female    3353  -0.68365; -78.43572  Paramo moss, shrub litter  23 Jun 1975  S. Peck  FMNH 
PBI_OON 00000394  ECUADOR  Cotopaxi    Cotopaxi National Park, along road to Laguna de Limpiopungo  2 Adult Female    3652  -0.61361; -78.47277  Paramo moss, shrub litter  03 Dec 2009  Niarchos expedition, N. Duperre, E. Tapia, M. Izquierdo, A. Bonaldo  AMNH 
PBI_OON 00000433  ECUADOR  Cotopaxi    Cotopaxi National Park, along road to Laguna de Limpiopungo  1 Adult Male  Holotype  3652  -0.61361; -78.47277  Paramo moss, shrub litter  09 Dec 2009  Niarchos expedition, B. Baehr  QCAZ 
PBI_OON 00010202  ECUADOR  Cotopaxi    Volcan Cotopaxi, NNE Latacunga  2 Adult Male    3353  -0.68365; -78.43572  Paramo moss, shrub litter  23 Jun 1975  S. Peck  FMNH 
PBI_OON 00000395  ECUADOR  Cotopaxi    Cotopaxi National Park, along road to Laguna de Limpiopungo  4 Adult Female    3652  -0.61361; -78.47277  Paramo moss, shrub litter  03 Dec 2009  Niarchos expedition, N. Duperre, E. Tapia, M. Izquierdo, A. Bonaldo  QCAZ 
PBI_OON 00000405  ECUADOR  Santo Domingo de los Tsachilas    La Union del Toachi, Otongachi  1 Adult Male    793  -0.32103; -78.95156  forest litter  06 Dec 2009  Niarchos expedition, N. Duperre, E. Tapia  AMNH 


 
 
 
 
The American Museum of Natural History, New York, in collaboration with
The California Academy of Sciences, San Francisco   The University of California, Berkeley
The Field Museum of Natural History, Chicago   George Washington University, Washington DC
 
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