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OONOPIDAE SPECIES DESCRIPTION
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(Female redundant descriptions removed)
Birabenella portai       Get publication



            Male (PBI_OON 50001). CEPHALOTHORAX: Carapace pale orange, without any pattern, ovoid in dorsal view, pars cephalica flat 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, without denticles; non-marginal pars cephalica setae dark, needle-like, present, scattered; non-marginal pars thoracica setae dark, needle-like; marginal setae dark, needle-like. Clypeus margin unmodified, straight 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. Eyes six, well developed, on dark pigment, ALE largest, all eyes oval; posterior eye row recurved from above, straight from front; ALE separated by their radius to diameter, 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, without radial furrows between coxae I-II, II-III, III-IV, radial furrow opposite coxae III absent, surface finely reticulate, without pits, microsculpture absent, 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 absent, 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 unmodified; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae dark, needle-like, evenly scattered; paturon distal region unmodified, promargin unmodified, inner margin unmodified. Labium elongated hexagon, not fused to sternum, anterior margin not indented at middle, same as sternum in sclerotization; with 1 or 2 setae on anterior margin, with a unpaired, erect median setae near the base.. Endites distally not excavated, same as sternum in sclerotization, with anteriorly directed flattened, black setae. ABDOMEN: ovoid, without long posterior extension, rounded posteriorly; dorsum soft portions pale white, without color pattern. Book lung covers small, without setae, anterolateral edge unmodified. Posterior spiracles connected by groove. Pedicel unmodified, scutum absent, but abdomen not extending anterior 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 absent. Postepigastric scutum absent. Spinneret scutum absent. Dorsum setae present, dark, needle-like. Epigastric area setae uniform, dark, needle-like. Postepigastric area setae present, dark, needle-like. 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 near as long as 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 spines absent. 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 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 light, 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, with distal patch of setae; bulb pale orange, 1 to 1.5 times as long as cymbium, stout, tapering apically, middle part fundus nearly spherical, ventral, from where arises the weakly sclerotized seminal duct; gently curved to dorsal in the origin, it turns almost straight along almost all its length, running paralelly to a tendon., distal part distal part of the bulb with a complex set of translucent, flattened projections (some with pointed tip, others with truncated tip, Fig. qq) around the embolus opening. With a ventral digitiform projection slightly curved to the retrolateral side..

            Female (PBI_OON 50000). As in male except as noted. CEPHALOTHORAX: Eyes on dark pigment. Mouthparts: setae light. Female palp claws absent; spines absent; tarsus unmodified. LEGS: Leg spines absent. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria not examined. GENITALIA: Dorsal view: anterior sclerite small, drop-shaped, apparently with a lumen; two thin consecutive transverse sclerotized bars separate it from the posterior part of the genitalia. Copulatory opening led apparently to the thick walled anterior copulatory duct, that seems to be fused with a pair of lateral transverse projections with muscular insertions at their tips. The duct continues in the posterior receptacle, with a anterior thickened wall, with wrinkled surface; inside that, a nearly M-shaped internal tube. The posterior receptacle is located in the middle of a heavily sclerotized supporting structure, that also have lateral extensions with muscle insertions..
 

DISTRIBUTION

ARGENTINA
Birabenella portai 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 Birabenella portai, 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 00050001  ARGENTINA  Jujuy  Tilcara  Posta de Hornillos RN9 km 72, 4 km S of Maimara  1 Adult Male  Holotype  2390  -23.65612; -65.43365  litter under bushes, cacti  28 Dec 2016  Porta, Andrés  MACN 
PBI_OON 00050000  ARGENTINA  Jujuy  Tilcara  Posta de Hornillos RN9 km 72, 4 km S of Maimara  1 Adult Female  Paratype  2390  -23.65612; -65.43365  litter under bushes, cacti  28 Dec 2016  Porta, Andrés  MACN 


 
 
 
 
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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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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