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(Female redundant descriptions removed)
Pescennina orellana       Get publication

            Male (PBI_OON 478). Total length 1.83. CEPHALOTHORAX: Carapace orange-brown, without any pattern, ovoid in dorsal view, pars cephalica slightly elevated in lateral view, anteriorly narrowed to between 0.5 and 0.75 times its maximum width, with angular 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 finely reticulate, sides granulate, thorax without depressions, fovea absent, without radiating rows of pits; lateral margin straight, rebordered, with sharply pointed 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 dark, needle-like; marginal setae dark, needle-like. Clypeus margin slightly rebordered, straight in front view, sloping forward in lateral view, high, ALE separated from edge of carapace by their radius or more, median projection absent; setae present, dark, needle-like. Chilum absent. Eyes six, well developed, ALE largest, ALE oval, PME squared, PLE oval; posterior eye row recurved from above, procurved 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 less than PME radius. Sternum longer than wide, orange-brown, uniform, 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 everywhere but front, sickle-shaped structures absent, anterior margin with interrupted transverse groove, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, anterior corner unmodified, lateral margin with infra-coxal grooves and anterior and posterior openings, distance between coxae approximately equal, extensions of pre-coxal triangles absent, lateral margins with indented extensions between coxae, without posterior hump; setae sparse, dark, needle-like, densest laterally, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium orange-brown. Chelicerae straight, anterior face unmodified; 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, evenly scattered; paturon inner margin with short inter-digitating setae, distal region abruptly narrowed, posterior surface unmodified, promargin unmodified, inner margin unmodified, laminate groove absent. Labium triangular, 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 stout projection (Brignolia type), posteromedian part unmodified, same as sternum in sclerotization. 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 medium, 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, orange-brown, 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, greatly narrowed anteriorly. Epigastric scutum strongly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum strongly sclerotized, orange-brown, long, almost rectangular, covering nearly full length of abdominal length, fused to epigastric scutum, anterior margin unmodified, with short posteriorly directed lateral apodemes. Spinneret scutum present, incomplete ring. 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: orange-brown, 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 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 large, oval, situated in front of anterior spiracles, rebordered; 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, basal portion with wide, translucent conductor; 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, narrow 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, slender, tapering apically.
Pescennina orellana, male abdomen, ventral view (image by ND, specimen ID: ---00478)


Pescennina orellana, male carapace, dorsal view (image by ND, specimen ID: ---00478)


Pescennina orellana, male carapace, lateral view (image by ND, specimen ID: ---00478)


Pescennina orellana, male habitus, anterior view (image by ND, specimen ID: ---00478)


Pescennina orellana, male habitus, dorsal view (image by ND, specimen ID: ---00478)


Pescennina orellana, male habitus, lateral view (image by ND, specimen ID: ---00478)


Pescennina orellana, male habitus, ventral view (image by ND, specimen ID: ---00478)


Pescennina orellana, male palp, prolateral view (image by ND, specimen ID: ---00478)


Pescennina orellana, male palp, retrolateral view (image by ND, specimen ID: ---00478)


Pescennina orellana, male sternum, ventral view (image by ND, specimen ID: ---00478)


Pescennina orellana, male embolus, dorsal view (image by ND, specimen ID: ---00479)


            Female (PBI_OON 645). Total length 1.97. As in male except as noted. CEPHALOTHORAX: Eyes ALE separated by less than their radius. Sternum ventral pedicel sclerite fully fused with sternum at wide transverse ridge. Endites anteromedian tip unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: Pedicel tube short, unmodified, scutum not extending far dorsal of pedicel. Dorsal scutum absent. Epigastric scutum without lateral joints. Postepigastric scutum short, only around epigastric furrow, not fused to epigastric scutum. LEGS: Leg spines absent. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria not examined. GENITALIA: Ventral view: anterior ducts with long longitudinal ventral portion followed distally by irregular coils. Dorsal view: apodemes large, widely separated.
Pescennina orellana, female carapace, dorsal view (image by ND, specimen ID: ---00645)


Pescennina orellana, female carapace, lateral view (image by ND, specimen ID: ---00645)


Pescennina orellana, female epigynum, epigynal area, ventral view (image by ND, specimen ID: ---00645)


Pescennina orellana, female habitus, anterior view (image by ND, specimen ID: ---00645)


Pescennina orellana, female habitus, dorsal view (image by ND, specimen ID: ---00645)


Pescennina orellana, female habitus, lateral view (image by ND, specimen ID: ---00645)


Pescennina orellana, female habitus, ventral view (image by ND, specimen ID: ---00645)


Pescennina orellana, female internal female genitalia, dorsal view (image by ND, specimen ID: ---00645)


Pescennina orellana, female internal female genitalia, ventral view (image by ND, specimen ID: ---00645)


Pescennina orellana, female sternum, ventral view (image by ND, specimen ID: ---00645)




Pescennina orellana 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 Pescennina orellana, Discover Life Map

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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 00000477  ECUADOR  Orellana    1 km S Onkone Gare Camp, Reserva Etnica Waorani  1 Adult Male  Holotype  216  -0.65716; -76.45300    08 Aug 1995  T. Erwin et al.  USNM 
PBI_OON 00000479  ECUADOR  Orellana    1 km S Onkone Gare Camp, Reserva Etnica Waorani  2 Adult Male    216  -0.65716; -76.45300    05 Oct 1995  T. Erwin et al.  USNM 
PBI_OON 00000478  ECUADOR  Orellana    1 km S Onkone Gare Camp, Reserva Etnica Waorani  1 Adult Male    216  -0.65716; -76.45300    21 Jun 1996  T. Erwin et al.  USNM 

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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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