Welcome Locality Data Entry        | Links | About Oonopidae | Outreach | Sign In 
Home | Project Description | Investigators | Species Pages |
Home >> Species Pages >>
OONOPIDAE SPECIES DESCRIPTION
(1) List all species     
OR       (2) Search by: Select the genus
Select the species
(Female redundant descriptions removed)
Niarchos keili       Get publication



            Male (PBI_OON 10534). Total length 1.58. 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 absent, no trace of sclerite detected. Eyes six, reduced, tiny, only PME noticeably reduced, 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 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 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 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, 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 posterior directed process shaped like duck's beak, followed posteriorly by rounded protuberance. 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, consisting of two small, narrow, 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. 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, embolar region basally narrowed, distally expanded, preceded by dorsal protrusion; 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 keili, male carapace, dorsal view (image by ND, specimen ID: ---10534)

Niarckeilimpcard10534ND.tif

Niarchos keili, male carapace, lateral view (image by ND, specimen ID: ---10534)

Niarckeilimpcarl10534ND.tif

Niarchos keili, male habitus, anterior view (image by ND, specimen ID: ---10534)

Niarckeilimphaba10534ND.tif

Niarchos keili, male habitus, dorsal view (image by ND, specimen ID: ---10534)

Niarckeilimphabd10534ND.tif

Niarchos keili, male habitus, lateral view (image by ND, specimen ID: ---10534)

Niarckeilimphabl10534ND.tif

Niarchos keili, male habitus, ventral view (image by ND, specimen ID: ---10534)

Niarckeilimphabv10534ND.tif

Niarchos keili, male palp, prolateral view (image by ND, specimen ID: ---10534)

Niarckeilimppalp10534ND.tif

Niarchos keili, male palp, retrolateral view (image by ND, specimen ID: ---10534)

Niarckeilimppalr10534ND.tif

Niarchos keili, male palp, ventral view (image by ND, specimen ID: ---10534)

Niarckeilimppalv10534ND.tif

Niarchos keili, male sperm pore, ventral view (image by ND, specimen ID: ---10534)

Niarckeilimpspov10534ND.tif

Niarchos keili, male sternum, ventral view (image by ND, specimen ID: ---10534)

Niarckeilimpstev10534ND.tif

Niarchos keili, male embolus, prolateral view (image by ND, specimen ID: ---10534)

Niarckeilimpembp10534ND.tif

Niarchos keili, male embolus, ventral view (image by ND, specimen ID: ---10534)

Niarckeilimpembv10534ND.tif

 

DISTRIBUTION

ECUADOR
Niarchos keili 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 Niarchos keili, Discover Life Map
 

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 00010534  ECUADOR  Santo Domingo de los Tsachilas    4 km E Santo Domingo  1 Adult Male  Holotype  518  -0.23911; -79.14093  rainforest, litter  22 Jun 1975  S. Peck  FMNH 


 
 
 
 
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
 
©Copyright 2006-2022. All Rights Reserved.
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.
If the format of any material on the website interferes with your ability to access that material, please contact us at [email protected]