Orchestina nahuatl Izquierdo, 2017

Izquierdo, Matías Andrés & Ramírez, Martín J., 2017, Taxonomic Revision Of The Jumping Goblin Spiders Of The Genus Orchestina Simon, 1882, In The Americas (Araneae: Oonopidae), Bulletin of the American Museum of Natural History 2017 (410), pp. 1-1 : 1-

Orchestina nahuatl Izquierdo , new species

Figures 23 , 39A , 44A , map 2

TYPE: Female holotype from Guerrero, Mexico, 5 miles NE Taxco (18.58333°, -99.55000°), May 04, 1963, W. Gertsch, W. Ivie, deposited in AMNH, PBI_OON 1092.

ETYMOLOGY: A noun in apposition; Nauhatl is a language of the Nahuan branch of the Uto- Aztecan language family that has been spoken in Central Mexico since the seventh century.

DIAGNOSIS: Females can easily be distinguished from those of other species of the region by having the anterior receptaculum with ventral, massive projection (fig. 44A), with long anterior apodemes, and two cuticular ridges on the epigastric region (figs. 39A).

MALE: Unknown.

FEMALE (PBI_OON 1092): Total length 1.4.

CEPHALOTHORAX: Labium rectangular.

ABDOMEN: Pale white. LEGS: Left leg IV absent. GENITALIA: Epigastric region with two lateral cuticular ridges (fig. 39A), external, internal pockets absent; anterior receptaculum apparently with two small, lateral additional receptacles (fig. 44A), massive, rounded ventral projection, anterior apodemes very long; posterior receptaculum absent, posterior apodeme formed by entire plate.

DISTRIBUTION: Known only from the type locality in Mexico (Guerrero, map 2).

OTHER MATERIAL EXAMINED: Same data as the holotype, 1 juvenile, sex unknown.

Figures

FIGURE 23. Orchestina nahuatl, habitus of female holotype. A. Dorsal. B. Ventral. C. Lateral. Scale bars: 0.5 mm. (PBI_OON 1092).

FIGURE 39. Orchestina spp., female genitalia, ventral view. A. O. nahuatl. B. O . chaparrita. C. O . guatemala. D. O . griswoldi. E. O . chiriqui. F. O . truncata. Scale bars: 0.2 mm, except B, 0.1 mm. Image E by Luis Piacentini. (PBI_OON 1092, 1085, 38165, 2300, 42292, 27982).

FIGURE 44. Orchestina spp., drawings of female genitalia, ventral view. A. O . nahuatl. B. O . chaparrita. C. O . dentifera. D. O . guatemala. E. O . truncata. F. O . chiriqui. G. O . labarquei. H. O . laselva. Scale bars: 0.1 mm. (PBI_OON 1092, 1085, 42163, 38165, 30900, 42562, 42305, 27943).