Welcome Locality Data Entry        | Links | About Oonopidae | Outreach | Sign In 
Home | Project Description | Investigators | Species Pages |
Home >> Species Pages >>
OONOPIDAE SPECIES DESCRIPTION
(1) List all species     
OR       (2) Search by: Select the genus
Select the species
(Female redundant descriptions removed)
Orchestina silvae       Get publication



            Female (PBI_OON 43318). Total length 1.5. CEPHALOTHORAX: Carapace orange, 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 rounded posterolateral corners, posterolateral edge without pits, posterior margin not bulging below posterior rim, 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, smooth, 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 absent. Clypeus margin unmodified, curved downwards 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, posterior eye row slightly recurved in front view, PME largest, ALE circular, PME oval, PLE circular; posterior eye row recurved from above; ALE separated by more than their diameter, ALE-PLE touching, PME touching throughout most of their length, 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 smooth, without pits, microsculpture covering entire surface, sickle-shaped structures absent, anterior margin unmodified, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, 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, evenly scattered, originating from surface. Mouthparts: Chelicerae, endites and labium pale orange. Chelicerae straight, anterior face unmodified; without teeth on both promargin and retromargin; fangs directed medially, shape normal, without prominent basal process, tip unmodified; setae dark, evenly scattered; paturon inner margin with scattered setae, distal region unmodified, posterior surface unmodified, inner margin unmodified. Labium rectangular, not fused to sternum, anterior margin not indented at middle; with 6 or more setae on anterior margin, 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: ovoid, without long posterior extension, rounded posteriorly, inter-scutal membrane rows of small sclerotized platelets absent posteriorly; dorsum soft portions pale white, without color pattern. Book lung covers large, round, without setae, anterolateral edge unmodified. Posterior spiracles not connected by groove. Pedicel tube medium, with fringe of setae, scuto-pedicel region unmodified, scutum absent, but abdomen extending anteriad 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 weakly sclerotized, not surrounding pedicel, not protruding, small lateral sclerites absent, without lateral joints. 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. Spinneret scutum with fringe of long setae. Dense patch of setae anterior to spinnerets absent. Colulus present. LEGS: pale orange, without color pattern; femur IV thickened, much larger than femora I-III, 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 examined with Stereo microscope; metatarsus: each with one.
Orchestina silvae, female habitus, dorsal view (image by MI, specimen ID: ---43312)

ORCHESILVAfphabd43312MI.tif

Orchestina silvae, female abdomen, ventral view (image by MI, specimen ID: ---43312)

ORCHESILVAfpabdv43312MI.tif

Orchestina silvae, female habitus, lateral view (image by MI, specimen ID: ---43312)

ORCHESILVAfphabl43312MI.tif

Orchestina silvae, female internal female genitalia, ventral view (image by MI, specimen ID: ---43312)

ORCHESILVAfpifgv43312MI.tif

 

DISTRIBUTION

PERU
Orchestina silvae 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 Orchestina silvae, Discover Life Map
 

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 00043312  PERU  Loreto    Río Samiria  2 Adult Female  Paratype    -5.11666; -75.46666    01 May 1990  T. Erwin, D. Silva  MUSM 
PBI_OON 00043315  PERU  Madre de Dios  Provincia Manu  Zona Reservada Pakitza  1 Adult Female    356  -11.93333; -71.28333    01 Jun 1992  T. Erwin, D. Silva  MUSM 
PBI_OON 00043318  PERU  Madre de Dios  Provincia Manu  Zona Reservada Pakitza  1 Adult Female  Paratype  356  -11.93333; -71.28333    01 Jun 1992  T. Erwin, D. Silva  MUSM 
PBI_OON 00043308  PERU  Madre de Dios  Provincia Manu  Zona Reservada Pakitza  1 Adult Female    356  -11.93333; -71.28333  Leaf Litter  01 Jun 1992  T. Erwin, D. Silva  MUSM 
PBI_OON 00042770  PERU  Madre de Dios  Tambopata  15 km E Puerto Maldonado  1 Adult Female    200  -12.33000; -69.02972  Leaf Litter  18 Jul 1989  D. Silva  MUSM 


 
 
 
 
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
 
©Copyright 2006-2022. All Rights Reserved.
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.
If the format of any material on the website interferes with your ability to access that material, please contact us at [email protected]