Escaphiella chiapa Platnick & Dupérré, 2009, new species
Creators: name: Platnick, Norman I.
name: Dupérré, Nadine
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Oonopidae
Escaphiella
Escaphiella chiapa

description: Escaphiella chiapa, new species Figures 291–318; map 5   
TYPES: Male holotype and female allotype taken on a hillside 5 mi NE of Chiapa, Chiapas, Mexico (Aug. 22, 1966; J., W. Ivie), deposited in AMNH (PBI_OON 31048).  
ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.  
DIAGNOSIS: Males can be distinguished by their unique form of palpal asymmetry, in which the left palp is slightly reduced (figs. 303–309; in the other species with asymmetric palps, it is the right palp that is smaller), females by the relatively small anterior epigynal sclerite, which is only slightly wider posteriorly than anteriorly (fig. 315).  
MALE (PBI_OON 26827): Total length 1.40 (figs. 291, 292, 295). Carapace pale orange, surface of elevated portion of pars cephalica granulate, sides granulate; lateral margins with blunt denticles (figs. 293, 296). Eyes: ALE circular, PME squared; ALE touching, ALE-PLE touching, PME touching throughout most of their length, PLE-PME touching (fig. 294). Sternum pale orange, without radial furrows between coxae I–II, II–III, III–IV, surface smooth, microsculpture absent (fig. 298). Chelicerae, endites, and labium pale orange. Abdomen ovoid; book lung covers large, ovoid; pedicel tube medium, ribbed, scutum extending far dorsal of pedicel, small scutal ridge present above pedicel, with secondary ridge joining book lungs (figs. 301, 302); dorsal scutum pale orange, covering full length of abdomen, no soft tissue visible from above, middle surface finely reticulate, sides finely reticulate; postepigastric scutum pale orange, sides finely striate, rugose (figs. 297, 299). PMS present, with one spigot (light microscope). Legs pale orange. Right palp consistently different from left palp, slightly larger, more robust (figs. 303–309), proximal segments pale orange; embolus dark; femur normal size; cymbium and bulb pale orange.  
FEMALE (PBI_OON 26827): Total length 1.44 (figs. 300, 312, 314, 316). Abdomen with soft portions of dorsum white (figs. 310, 313); book lung covers small; margins of anterior part of epigastric scutum with small ridge and granulations (figs. 317, 318); postepigastric scutum with sides reticulate only along margins. Anterior epigynal sclerite not greatly widened posteriorly (figs. 311, 315).  
 OTHER MATERIAL EXAMINED: MEXICO: Chiapas: hillside 5 mi NE Chiapa, 16 ° 459N, 92 ° 589W, Aug. 22, 1966 (J., W. Ivie, AMNH PBI_OON 26827), 228, 36♀, Aug. 26, 1966 (J., W. Ivie, AMNH PBI_OON 36877), 98, 12♀; rim of canyon at Sumidero, 16 ° 509N, 93 ° 059W, July 30, 1966 (J., W. Ivie, AMNH PBI_OON 36880), 1♀; Tuxtla Gutiérrez, July 20, 1947 (C., M. Goodnight, AMNH PBI_OON 36878), 1♀; rim of gorge NE Tuxtla Gutiérrez, 2 mi S Sumidero, 16 ° 489N, 93 ° 049W, Aug. 17, 1966 (J., W. Ivie, AMNH PBI_OON 36879), 1♀.   
DISTRIBUTION: Known only from Chiapas, Mexico (map 5).
description: Published as part of Platnick, Norman I. & Dupérré, Nadine, 2009, The American Goblin Spiders Of The New Genus Escaphiella (Araneae, Oonopidae), pp. 1-151 in Bulletin of the American Museum of Natural History 2009 (328) on page 56, DOI: 10.1206/679.1, http://zenodo.org/record/12776972