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OONOPIDAE SPECIES DESCRIPTION
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Triaeris togo       Get publication



            Male (PBI_OON 9396). Total length 1.54. CEPHALOTHORAX: Carapace orange-brown, broadly oval in dorsal view, pars cephalica domed in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, with rounded posterolateral corners, posterolateral edge without pits, posterior margin not bulging below posterior rim, anterolateral corners with strongly sclerotized, triangular extension, posterolateral surface without spikes, surface of elevated portion of pars cephalica smooth, sides finely reticulate, thorax without depressions, fovea absent, without radiating rows of pits, with submarginal dark stripe extending almost as far anterior as coxa I; dark longitudinal stripe present along midline; lateral margin straight, rebordered, without 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 strongly rebordered, curved downwards 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. 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 touching throughout most of their length, PLE-PME separated by less than PME radius. Sternum longer than wide, pale orange, uniform, not 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, microsculpture absent, sickle-shaped structures absent, anterior margin with continuous transverse groove, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, anterior corner with strongly sclerotized triangle in male, lateral margin with infra-coxal grooves and anterior and posterior openings, distance between coxae approximately equal, extensions of pre-coxal triangles present, lateral margins with narrow extensions between coxae, without posterior hump, with pair of enlarged, posteromedially directed setae situated near anterolateral corners; setae sparse, dark, needle-like, densest laterally, originating from surface, without hair tufts. Mouthparts: Chelicerae straight, anterior face unmodified, yellow, labium and endites dark red-brown; promargin with one tooth, retromargin without teeth; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae dark, needle-like, densest medially; paturon inner margin with scattered 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 indented at middle, much more heavily sclerotized than sternum, posterior margin with unsclerotized area around midline; with 1 or 2 setae on anterior margin, subdistal portion with 1 enlarged seta. Endites distally excavated, much more heavily sclerotized than sternum, with narrow translucent band separating greatly enlarged anterior portion from short posterior portion, posterior portion fused with labium at its posterolateral corners. 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 not connected by groove. Pedicel tube short, unmodified, 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, yellow-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 smooth, sides smooth, anterior half without projecting denticles. Epigastric scutum weakly sclerotized, surrounding pedicel, not protruding, small lateral sclerites absent. Postepigastric scutum weakly sclerotized, yellow-brown, long, almost rectangular, covering about 2/3 of abdominal length, fused to epigastric scutum, anterior margin unmodified, without 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 stout setae. Dense patch of setae anterior to spinnerets absent. Interscutal membrane with setae. Colulus present. LEGS: yellow, without color pattern; femur IV not thickened, same size as femora I-III, patella plus tibia I longer 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, patellae patella I elongate, measured dorsally, almost as long as tibia, other patellae elongated but less dramatically so. Leg spination (only surfaces bearing spines listed, all spines longer than segment width): patellae: I v0-1p-1r; II v0-1p-0; tibiae: I v2-4-0; II v1p-1p-0; IV v0-0-2. 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, oval, situated between anterior and posterior spiracles, unmodified; furrow without omega-shaped insertions, without setae. Palp normal size, not strongly sclerotized, right and left palps symmetrical, proximal segments white; 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, with group of prolateral leaf-like setae; tibia trichobothria not examined; cymbium white, narrow in dorsal view, fused with bulb but with clearly defined seam between, extending beyond distal tip of bulb, plumose setae absent, without stout setae, with distal patch of setae; bulb white, shorter than cymbium, slender, elongated.
Triaeris togo, male bulb, prolateral view (image by ND, specimen ID: ---09382)

Triaetogo9msbulp09382ND.tif

Triaeris togo, male carapace, dorsal view (image by ND, specimen ID: ---09382)

Triaetogo9mpcard09382ND.tif

Triaeris togo, male endites, ventral view (image by ND, specimen ID: ---09382)

Triaetogo9msendv09382ND.tif

Triaeris togo, male palp, prolateral view (image by ND, specimen ID: ---09382)

Triaetogo9mppalp09382ND.tif

Triaeris togo, male palp, retrolateral view (image by ND, specimen ID: ---09382)

Triaetogo9mppalr09382ND.tif

Triaeris togo, male palpal patella, prolateral view (image by ND, specimen ID: ---09382)

Triaetogo9msppap09382ND.tif

Triaeris togo, male sternum, ventral view (image by ND, specimen ID: ---09382)

Triaetogo9mpstev09382ND.tif


            Female (PBI_OON 9301). Total length 1.67. As in male except as noted. CEPHALOTHORAX: Carapace pale orange, pars cephalica strongly elevated in lateral view, with vague indications of submarginal dark stripe; dark longitudinal stripe present along midline. Clypeus margin slightly rebordered. Sternum anterior margin unmodified. Mouthparts: Chelicerae, endites and labium pale orange. Labium triangular, anterior margin not indented at middle; subdistal portion with unmodified setae. Endites distally not excavated, serrula present in single row, anteromedian tip unmodified, posteromedian part unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: Dorsal scutum pale orange. Epigastric scutum without lateral joints. Postepigastric scutum pale orange, short, only around epigastric furrow, not fused to epigastric scutum. LEGS: patellae patella I elongate, measured dorsally, almost as long as tibia, other patellae elongated but less dramatically so. Leg spination (only surfaces bearing spines listed, all spines longer than segment width): patellae: I v0-1p-1r; II v0-0-1r; tibiae: I v2-4-0; II v1r-1r-0; IV v0-0-2. Tarsi I to IV superior claws tooth not examined in detail. Trichobothria not examined. GENITALIA: Ventral view: postepigstric scutum externally with median, triangular elevation, posterior margin of elevation over circular opening continued as slit along midline for about one-third of process length. Dorsal view: anterior receptaculum bell-shaped, posterior receptaculum long, narrow.
Triaeris togo, female abdomen, ventral view (image by ND, specimen ID: ---09302)

Triaetogo9fpabdv09302ND.tif

Triaeris togo, female epigynum, epigynal area, ventral view (image by ND, specimen ID: ---09302)

Triaetogo9fpepiv09302ND.tif

Triaeris togo, female habitus, dorsal view (image by ND, specimen ID: ---09302)

Triaetogo9fphabd09302ND.tif

Triaeris togo, female internal female genitalia, dorsal view (image by ND, specimen ID: ---09302)

Triaetogo9fpifgd09302ND.tif

Triaeris togo, female internal female genitalia, ventral view (image by ND, specimen ID: ---09302)

Triaetogo9fpifgv09302ND.tif

Triaeris togo, female epigynum, epigynal area, ventral view (image by ND, specimen ID: ---09302)

Triaetogo9fsepiv09302ND.tif

 

DISTRIBUTION

TOGO
Triaeris togo 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 Triaeris togo, 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 00009385  TOGO  Kara    Bassari  1 Adult Male      9.27188; 0.79011    01 May 1984  P. Douben  MRAC 
PBI_OON 00009371  TOGO  Kara    Entre Bassari et Sokodé  2 Adult Male      9.12576; 1.02166  wooded savanna  01 May 1984  P. Douben  MRAC 
PBI_OON 00009396  TOGO  Kara    Bassari  1 Adult Male  Holotype    9.27188; 0.79011  wooded savanna  01 May 1984  P. Douben  MRAC 
PBI_OON 00009302  TOGO  Kara    Entre Bassari et Sokodé  2 Adult Female      9.12576; 1.02166  wooded savanna  01 May 1984  P. Douben  MRAC 
PBI_OON 00009382  TOGO  Kara    Entre Bassari et Sokodé  1 Adult Male      9.12576; 1.02166  wooded savanna  01 May 1984  P. Douben  MRAC 
PBI_OON 00009301  TOGO  Kara    Bassari  1 Adult Female      9.27188; 0.79011  wooded savanna  01 May 1984  P. Douben  MRAC 


 
 
 
 
The American Museum of Natural History, New York, in collaboration with
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The Field Museum of Natural History, Chicago   George Washington University, Washington DC
 
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