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OONOPIDAE SPECIES DESCRIPTION
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Pescennina murphyorum       Get publication



            Male (PBI_OON 40909). Total length 1.58. CEPHALOTHORAX: Carapace orange-brown, elongate oval in dorsal view, pars cephalica slightly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, 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 finely reticulate, thorax without depressions, fovea absent, with narrow dark markings along midline, one extending from eyes to middle of pars cephalica, one extending most of pars thoracica length, 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 circular, PLE oval; posterior eye row straight 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 more than 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 rugose, 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 pale orange. 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: constricted in middle, 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, pale orange, covering more than 3/4 of abdomen, no soft tissue visible from above, not fused to epigastric scutum, middle surface smooth, sides smooth, anterior half without projecting denticles, with anterolateral dark markings, posterior transverse dark stripe. Epigastric scutum strongly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum strongly sclerotized, pale orange, long, almost rectangular, covering about 3/4 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: yellow; 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, femora i, II with basal darkening on prolateral side, ventral longitudinal darkening; III, IV with prolateral and retrolateral longitudinal dark stripes, patellae iII, IV with prolateroventral darkenings at about half their length, tibiae iII, IV with prolateral and retrolateral longitudinal dark stripes. 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 yellow-brown; embolus light, prolateral excavation absent, embolar base sinuous, with long terminal triangle, embolus making loose coil with terminal coil at right angle; 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 yellow-brown, 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 yellow-brown, 1 to 1.5 times as long as cymbium, stout, tapering apically.
Pescennina murphyorum, male abdomen, ventral view (image by ND, specimen ID: ---40909)

Pescemurphmpabdv40909ND.tif

Pescennina murphyorum, male carapace, dorsal view (image by ND, specimen ID: ---40909)

Pescemurphmpcard40909ND.tif

Pescennina murphyorum, male carapace, lateral view (image by ND, specimen ID: ---40909)

Pescemurphmpcarl40909ND.tif

Pescennina murphyorum, male embolus, prolateral view (image by ND, specimen ID: ---40909)

Pescemurphmpembp40909ND.jpg

Pescennina murphyorum, male embolus, retrolateral view (image by ND, specimen ID: ---40909)

Pescemurphmpembr40909ND.tif

Pescennina murphyorum, male habitus, anterior view (image by ND, specimen ID: ---40909)

Pescemurphmphaba40909ND.tif

Pescennina murphyorum, male habitus, dorsal view (image by ND, specimen ID: ---40909)

Pescemurphmphabd40909ND.tif

Pescennina murphyorum, male habitus, lateral view (image by ND, specimen ID: ---40909)

Pescemurphmphabl40909ND.tif

Pescennina murphyorum, male habitus, ventral view (image by ND, specimen ID: ---40909)

Pescemurphmphabv40909ND.tif

Pescennina murphyorum, male palp, prolateral view (image by ND, specimen ID: ---40909)

Pescemurphmppalp40909ND.tif

Pescennina murphyorum, male palp, retrolateral view (image by ND, specimen ID: ---40909)

Pescemurphmppalr40909ND.tif

Pescennina murphyorum, male sternum, ventral view (image by ND, specimen ID: ---40909)

Pescemurphmpstev40909ND.tif

Pescennina murphyorum, male embolus, dorsal view (image by ND, specimen ID: ---35299)

Pescemurphmsembd35299ND.tif


            Female (PBI_OON 40909). Total length 1.63. As in male except as noted. CEPHALOTHORAX: Carapace with narrow dark markings along midline, one extending from eyes to middle of pars cephalica, one extending most of pars thoracica length. Sternum unsclerotized strip barely detectable. Endites anteromedian tip unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: dorsum soft portions yellow-brown, with pair of anterolateral longitudinal dark stripes and two posteriorly situated transverse dark stripes, four anterior white spots and posteriorly sitauted transverse white stripe situated anterior to most anterior transverse dark stripe. Pedicel tube short, unmodified, scutum not extending far dorsal of pedicel. Dorsal scutum absent. Epigastric scutum weakly sclerotized, without lateral joints. Postepigastric scutum weakly sclerotized, short, only around epigastric furrow, not fused to epigastric scutum. LEGS: femora i, II with basal darkening on prolateral side, ventral longitudinal darkening; III, IV with prolateral and retrolateral longitudinal dark stripes, patellae iII, IV with prolateroventral darkenings at about half their length, tibiae iII, IV with prolateral and retrolateral longitudinal dark stripes. Leg spines absent. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria not examined. GENITALIA: Ventral view: anterior ducts making about five coils around narrow transverse bar. Dorsal view: posterior receptaculum relatively wide, short.
Pescennina murphyorum, female abdomen, ventral view (image by ND, specimen ID: ---40909)

Pescemurphfpabdv40909ND.tif

Pescennina murphyorum, female carapace, dorsal view (image by ND, specimen ID: ---40909)

Pescemurphfpcard40909ND.tif

Pescennina murphyorum, female carapace, lateral view (image by ND, specimen ID: ---40909)

Pescemurphfpcarl40909ND.tif

Pescennina murphyorum, female habitus, anterior view (image by ND, specimen ID: ---40909)

Pescemurphfphaba40909ND.tif

Pescennina murphyorum, female habitus, dorsal view (image by ND, specimen ID: ---40909)

Pescemurphfphabd40909ND.tif

Pescennina murphyorum, female habitus, lateral view (image by ND, specimen ID: ---40909)

Pescemurphfphabl40909ND.tif

Pescennina murphyorum, female habitus, ventral view (image by ND, specimen ID: ---40909)

Pescemurphfphabv40909ND.tif

Pescennina murphyorum, female internal female genitalia, dorsal view (image by ND, specimen ID: ---40909)

Pescemurphfpifgd40909ND.tif

Pescennina murphyorum, female internal female genitalia, ventral view (image by ND, specimen ID: ---40909)

Pescemurphfpifgv40909ND.tif

Pescennina murphyorum, female sternum, ventral view (image by ND, specimen ID: ---40909)

Pescemurphfpstev40909ND.tif

 

DISTRIBUTION

COSTA RICA ; NICARAGUA
Pescennina murphyorum 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 00010583  COSTA RICA  Guanacaste    Santa Rosa National Park  1 Adult Male      9.98333; -85.56666  humid forest, leaf and log litter  28 Jun 2007  J. Louderman, C. Grinter  FMNH 
PBI_OON 00035299  COSTA RICA  Guanacaste    Parque Nacional Santa Rosa  1 Adult Male    250  10.78760; -85.64936  deciduous forest, Leaf Litter  05 Apr 1983  D. Ubick  CAS 
PBI_OON 00040909  COSTA RICA  Guanacaste    Canas  2 Adult Female    90  9.19335; -83.40536  forest, Leaf Litter  15 Aug 1983  J., F. Murphy  AMNH 
PBI_OON 00040909  COSTA RICA  Guanacaste    Canas  1 Adult Male  Holotype  90  9.19335; -83.40536  forest, Leaf Litter  15 Aug 1983  J., F. Murphy  AMNH 
PBI_OON 00010642  COSTA RICA  Guanacaste    Santa Rosa National Park  1 Adult Male      9.98333; -85.56666  humid forest, leaf and log litter  19 May 2007  J. Louderman, C. Grinter  FMNH 
PBI_OON 00035299  COSTA RICA  Guanacaste    Parque Nacional Santa Rosa  1 Adult Female    250  10.78760; -85.64936  deciduous forest, Leaf Litter  05 Apr 1983  D. Ubick  CAS 
PBI_OON 00026682  NICARAGUA  Granada    Volcan Mombacho, El Progreso #2  1 Adult Male    750  11.14250; -85.15222  non-organic coffee plantation  30 Sept 1998  J. Maes  MCZ 


 
 
 
 
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The Field Museum of Natural History, Chicago   George Washington University, Washington DC
 
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