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OONOPIDAE SPECIES DESCRIPTION
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Pescennina sumidero       Get publication



            Male (PBI_OON 40887). Total length 1.58. CEPHALOTHORAX: Carapace orange-brown, with dark y-shaped patch reaching from PLE to pars thoracica, 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, 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 more than their 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, with scattered dark markings. 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, dorsum with four transverse dark stripes. 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, with anterior and posterior pairs of lateral dark markings. 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 dorsally incomplete basal and distal dark rings; III with subbasal dark ring; IV darkened everywhere except basal ring, patellae iI, III, IV with ventral darkenings, tibiae iV ventrally darkened. 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, embolus with triangular expansion at base, smoothly coiling around tip of bulb, with terminal, ventrally directed coil; 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, 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, tapering apically.
Pescennina sumidero, male abdomen, ventral view (image by ND, specimen ID: ---40887)

Pescesumidmpabdv40887ND.tif

Pescennina sumidero, male bulb, prolateral view (image by ND, specimen ID: ---40887)

Pescesumidmpbulp40887ND.tif

Pescennina sumidero, male bulb, retrolateral view (image by ND, specimen ID: ---40887)

Pescesumidmpbulr40887ND.tif

Pescennina sumidero, male carapace, dorsal view (image by ND, specimen ID: ---40887)

Pescesumidmpcard40887ND.tif

Pescennina sumidero, male carapace, lateral view (image by ND, specimen ID: ---40887)

Pescesumidmpcarl40887ND.tif

Pescennina sumidero, male habitus, anterior view (image by ND, specimen ID: ---40887)

Pescesumidmphaba40887ND.tif

Pescennina sumidero, male habitus, dorsal view (image by ND, specimen ID: ---40887)

Pescesumidmphabd40887ND.tif

Pescennina sumidero, male habitus, lateral view (image by ND, specimen ID: ---40887)

Pescesumidmphabl40887ND.tif

Pescennina sumidero, male habitus, ventral view (image by ND, specimen ID: ---40887)

Pescesumidmphabv40887ND.tif

Pescennina sumidero, male palp, prolateral view (image by ND, specimen ID: ---40887)

Pescesumidmppalp40887ND.tif

Pescennina sumidero, male palp, retrolateral view (image by ND, specimen ID: ---40887)

Pescesumidmppalr40887ND.tif

Pescennina sumidero, male sternum, ventral view (image by ND, specimen ID: ---40887)

Pescesumidmpstev40887ND.tif

Pescennina sumidero, male embolus, dorsal view (image by ND, specimen ID: ---40887)

Pescesumidmsembd40887ND.tif


            Female (PBI_OON 40887). Total length 1.59. As in male except as noted. CEPHALOTHORAX: Sternum ventral pedicel sclerite apears fully fused to posterior tip of sternum. Endites anteromedian tip unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: dorsum soft portions orange-brown, dorsum with 7 white spots and posterior, transverse white band, sides ridged, irridescent. 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 dorsally incomplete basal and distal dark rings; III with subbasal dark ring; IV darkened everywhere except basal ring, patellae iI, III, IV with ventral darkenings, tibiae iV ventrally darkened. Leg spines absent. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria not examined. GENITALIA: Ventral view: anterior ducts with three coils around transverse, dumbbell-shaped rod. Dorsal view: surface of posterior receptaculum divided into circular areas.
Pescennina sumidero, female abdomen, ventral view (image by ND, specimen ID: ---40887)

Pescesumidfpabdv40887ND.jpg

Pescennina sumidero, female carapace, dorsal view (image by ND, specimen ID: ---40887)

Pescesumidfpcard40887ND.tif

Pescennina sumidero, female carapace, lateral view (image by ND, specimen ID: ---40887)

Pescesumidfpcarl40887ND.tif

Pescennina sumidero, female habitus, anterior view (image by ND, specimen ID: ---40887)

Pescesumidfphaba40887ND.tif

Pescennina sumidero, female habitus, dorsal view (image by ND, specimen ID: ---40887)

Pescesumidfphabd40887ND.tif

Pescennina sumidero, female habitus, lateral view (image by ND, specimen ID: ---40887)

Pescesumidfphabl40887ND.tif

Pescennina sumidero, female habitus, ventral view (image by ND, specimen ID: ---40887)

Pescesumidfphabv40887ND.tif

Pescennina sumidero, female internal female genitalia, dorsal view (image by ND, specimen ID: ---40887)

Pescesumidfpifgd40887ND.tif

Pescennina sumidero, female internal female genitalia, ventral view (image by ND, specimen ID: ---40887)

Pescesumidfpifgv40887ND.tif

Pescennina sumidero, female sternum, ventral view (image by ND, specimen ID: ---40887)

Pescesumidfpstev40887ND.tif

 

DISTRIBUTION

MEXICO
Pescennina sumidero 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 00040886  MEXICO  Chiapas  None or Unknown  Palenque  1 Adult Male      15.63333; -92.65000  cacao grove, leaves and humus  29 Jan 1976  C. Alteri  AMNH 
PBI_OON 00040885  MEXICO  Chiapas  None or Unknown  Pozo Numero Uno road, near Palenque  1 Adult Female      15.65000; -92.64000  litter and grass from cattle field  23 Jan 1976  C. Alteri  AMNH 
PBI_OON 00040883  MEXICO  Chiapas  None or Unknown  5 km S Sumidero, rim of canyon  5 Adult Male      16.80000; -93.08333  litter and grass from cattle field  17 Aug 1966  J., W. Ivie  AMNH 
PBI_OON 00040881  MEXICO  Chiapas  None or Unknown  Sumidero, Barranca, NE Tuxtla Gutierrez  2 Adult Female      16.83167; -93.09389  litter and grass from cattle field  19 Aug 1966  J., W. Ivie  AMNH 
PBI_OON 00040884  MEXICO  Chiapas  None or Unknown  rim of canyon, Sumidero  4 Adult Female      16.83333; -93.08333  litter and grass from cattle field  30 Jul 1966  J., W. Ivie  AMNH 
PBI_OON 00040887  MEXICO  Chiapas  None or Unknown  rim of gorge NE Tuxtla Gutierrez, 2 mi S Sumidero  8 Adult Female      16.80000; -93.06666  litter and grass from cattle field  17 Aug 1966  J., W. Ivie  AMNH 
PBI_OON 00040882  MEXICO  Chiapas  None or Unknown  5 mi NE Chiapa, hillside  1 Adult Female      16.75000; -92.96667  litter and grass from cattle field  22 Aug 1966  J., W. Ivie  AMNH 
PBI_OON 00040884  MEXICO  Chiapas  None or Unknown  rim of canyon, Sumidero  1 Adult Male      16.83333; -93.08333  litter and grass from cattle field  30 Jul 1966  J., W. Ivie  AMNH 
PBI_OON 00040887  MEXICO  Chiapas  None or Unknown  rim of gorge NE Tuxtla Gutierrez, 2 mi S Sumidero  12 Adult Male  Holotype    16.80000; -93.06666  litter and grass from cattle field  17 Aug 1966  J., W. Ivie  AMNH 
PBI_OON 00040882  MEXICO  Chiapas  None or Unknown  5 mi NE Chiapa, hillside  1 Adult Male      16.75000; -92.96667  litter and grass from cattle field  22 Aug 1966  J., W. Ivie  AMNH 
PBI_OON 00040879  MEXICO  Chiapas  None or Unknown  rim of canyon, Sumidero  2 Adult Female      16.83333; -93.08333  litter and grass from cattle field  30 Jul 1966  J., W. Ivie  AMNH 
PBI_OON 00040883  MEXICO  Chiapas  None or Unknown  5 km S Sumidero, rim of canyon  2 Adult Female      16.80000; -93.08333  litter and grass from cattle field  17 Aug 1966  J., W. Ivie  AMNH 
PBI_OON 00040880  MEXICO  Tabasco  None or Unknown  Pico de Oro  1 Adult Female      17.58000; -93.30000  litter and grass from cattle field  12 Aug 1966  J., W. Ivie  AMNH 


 
 
 
 
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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