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

            Male (PBI_OON 10721). Total length 2.07. CEPHALOTHORAX: Carapace orange-brown, without any pattern, broadly oval in dorsal view, pars cephalica strongly 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, rebordered, with blunt denticles; plumose setae near posterior margin of pars thoracica absent; non-marginal pars cephalica setae light, needle-like, present, scattered; non-marginal pars thoracica setae light, needle-like; marginal setae light, needle-like. Clypeus margin slightly rebordered, straight in front view, vertical in lateral view, high, ALE separated from edge of carapace by their radius or more, median projection absent; setae present, light, needle-like. Chilum absent. Eyes six, well developed, ALE largest, all eyes circular; 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 touching throughout most of their length, PLE-PME touching. Sternum as long as wide, orange-brown, uniform, 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, sickle-shaped structures absent, anterior margin with continuous transverse groove, 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, light, needle-like, evenly scattered, originating from small pits, without hair tufts. Mouthparts: Chelicerae, endites and labium orange-brown. Chelicerae straight, anterior face unmodified; with one tooth on both promargin and retromargin; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae light, needle-like, evenly scattered; paturon inner margin with pairs of enlarged setae, distal region unmodified, posterior surface unmodified, promargin with row of flattened setae, inner margin unmodified, laminate groove absent. 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 excavated, serrula absent, 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 orange, without color pattern. Book lung covers large, ovoid, without setae, anterolateral edge unmodified. Posterior spiracles connected by groove. Pedicel tube medium, ribbed, 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 strongly sclerotized, orange-brown, without color pattern, covering full length of abdomen, no soft tissue visible from above, not fused to epigastric scutum, middle surface smooth, sides smooth, anterior half without projecting denticles. Epigastric scutum strongly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum strongly sclerotized, orange-brown, long, semicircular, covering nearly full length of abdominal length, fused to epigastric scutum, anterior margin unmodified, with short posteriorly directed lateral apodemes. Spinneret scutum absent. Dorsum setae present, light, needle-like. Epigastric area setae uniform, light, needle-like. Postepigastric area setae present, light, needle-like. Spinneret scutum with fringe of needle-like setae. Dense patch of setae anterior to spinnerets absent. Interscutal membrane with setae. Colulus absent. LEGS: orange-brown, without color pattern; femur IV not thickened, same size as femora I-III, patella plus tibia I near as long as carapace, tibia I unmodified, 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: I v2-4-0; metatarsi: I v2-2-0. 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 in front 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 present; 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, completely fused with bulb, no seam visible, extending beyond distal tip of bulb, plumose setae absent, without stout setae, with distal patch of setae; bulb pale orange, shorter than cymbium, stout, elongated.
Neoxyphinus beni, male abdomen, anterior view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male abdomen, dorsal view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male abdomen, lateral view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male abdomen, ventral view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male carapace, anterior view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male carapace, posterior view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male endites, ventral view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male palp, prolateral view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male palp, retrolateral view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male palp, ventral view (image by DM, specimen ID: ---10721)


Neoxyphinus beni, male sternum, ventral view (image by DM, specimen ID: ---10721)


            Female (PBI_OON 44362). Total length 2.18. As in male except as noted. CEPHALOTHORAX: Eyes all subequal. Labium with 3-5 setae on anterior margin. Endites distally not excavated, serrula present in single row. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: Dorsal scutum fused to epigastric scutum. Epigastric scutum without lateral joints. Postepigastric scutum almost semicircular. LEGS: tibia IV specialized hairs on ventral apex absent, tibia IV ventral scopula absent. Leg spination (only surfaces bearing spines listed, all spines longer than segment width): tibiae: I v6-2-0; II v4-2-0; metatarsi: I v4-2-0; II v2-2-0. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria not examined.
Neoxyphinus beni, female abdomen, dorsal view (image by NM, specimen ID: ---44362)


Neoxyphinus beni, female abdomen, lateral view (image by NM, specimen ID: ---44362)


Neoxyphinus beni, female abdomen, ventral view (image by NM, specimen ID: ---44362)


Neoxyphinus beni, female carapace, anterior view (image by NM, specimen ID: ---44362)


Neoxyphinus beni, female carapace, lateral view (image by NM, specimen ID: ---44362)


Neoxyphinus beni, female endites, ventral view (image by NM, specimen ID: ---44362)


Neoxyphinus beni, female epigynum, epigynal area, ventral view (image by NM, specimen ID: ---44362)


Neoxyphinus beni, female sternum, ventral view (image by NM, specimen ID: ---44362)


Neoxyphinus beni, female habitus, dorsal view (image by NM, specimen ID: ---44362)




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 Neoxyphinus beni, Discover Life Map



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]