Orchestina MI

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 MI 028

Figures 210 , 226A–C , map 21

MORPHOTYPE: Male from Peru: Madre de Dios: Provincia Manu: Zona Reservada Pakitza, 356 m, -11.93333°, -71.28333°, June 01, 1992, T. Erwin, D. Silva, deposited in MUSM, PBI_OON 51092.

REMARKS: This male was found in the same vial with a female of O. silvae (MUSM 501566, PBI_OON 43318), but, given that many other males and females were found in the same locality on the same date, the specimens were separated and treated as different species. In case of future matching, we have placed a label in both vials indicating the original location of such specimens.

DIAGNOSIS: Males can be distinguished by the sinuous clypeus (fig. 210B), the abruptly narrowed promargin of chelicerae (fig. 210B), the lateral projections on the labium (fig. 210C, arrow) and the morphology of the palp (fig. 226A–C).

DESCRIPTION: Anterior margins of sternum with two pale areas at both sides of labium (fig. 210C). Chelicerae anterior face with basal conical projections near base, promargin abruptly narrowed (fig. 210B). Labium widest at base, with two lateral projections, slightly more sclerotized than sternum, two sclerotized bands extending to sternum (fig. 210C). Endites anteromedian tip with one short, strong, toothlike projection, serrula difficult to observe but probably present. ABDOMEN: Pattern of gray or purple patches (fig. 210A). GENITALIA: Embolus short, flanked by short spinelike apophysis (fig. 226A–C), sperm duct strongly coiled, with several loops.

DISTRIBUTION: Known only from the morphotype locality (map 21).

OTHER MATERIAL EXAMINED: None.

Figures

FIGURE 210. Orchestina MI028. A. Habitus. B–D. Cephalothorax. A, D. Lateral. B. Anterolateral. C. Ventral. Arrow in B points to the narrowed promargin of chelicerae. Arrow in C points to the lateral projections of labium. Scale bars: A. 0.5 mm. B–D. 0.2 mm. (PBI_OOON 51092).

FIGURE 226. Palps of morphospecies of Orchestina. A–C. OMI028. D–F. OMI030. G–I. OMI032. A, D, G. Prolateral. B, E, H. Dorsal. C, F, I. Retrolateral. Scale bars: 0.2 mm. (PBI_OON 51092, 40467, 43310).