Orchestina ecuatoriensis 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 ecuatoriensis Izquierdo ,

new species

Figures 71–75 , 93A–C , 100C–E , map 10

TYPES: Male holotype from Ecuador: Orellana, 1 km S Onkone Gare Camp, Reserva Etnica Waorani, 216 m, -0.65715°, -76.45300°, June 21, 1996, T. Erwin et al., deposited in USNM, PBI_ OON 37627; Tiputini Biodiversity Station, near Yasuní National Park, 250 m, -0.63194°, -76.14416°, July 01, 1998, T. Erwin et al., 1 male paratype deposited in USNM, PBI_OON 37642.

ETYMOLOGY: The species is named after the type locality, Ecuador.

DIAGNOSIS: Males resemble those of O. magna in the presence of a spine-shaped apophysis on the copulatory bulb, but in O. ecuatoriensis both the embolus and spine-shaped apophysis are shorter (figs. 74E, F, 93A–C, 100C–E). The copulatory bulb is slightly more slender in O. ecuatoriensis .

MALE (PBI_OON 37627): Total length 1.20. Habitus as in figure 71A, B. CEPHALOTHO- RAX: With brown stripe along margin of cephalic area (fig. 71D), wide oval in dorsal view (fig. 72A). Clypeus as in figures 71A, C, 72A–D, slightly sloping forward in lateral view. Eyes as in figure 72A–D. Sternum as long as wide (figs. 71B, 74C). Chelicerae anterior face with basal blunt projections (fig. 72D), with mesal lamina and one strong cuticular projection on promargin (fig. 73B); fang tip unmodified. Labium rectangular (fig. 74A, B). Endites anteriormedian part with one short toothlike projection. ABDOMEN: Pale white. LEGS: Ultrastructure as in figure 75A–F. GENITALIA: Bulb pale orange, tapering apically; embolus short; sperm duct coiled, with several loops (figs. 74E, F, 93A–C, 100C–E).

FEMALE: Unknown; females of morphospecies females of morphospecies MI020–MI027, MI029, MI036, and MI038 from the same area are candidates to match this male.

DISTRIBUTION: Known from Orellana province, Ecuador (map 10).

OTHER MATERIAL EXAMINED: ECUADOR: Orellana: 1 km S Onkone Gare Camp, Reserva Etnica Waorani, 216 m, -0.65715°, -76.45300°, June 25, 1996, T. Erwin et al., 23 ( USNM, PBI_OON 29996); same data, Feb. 05, 1996, T. Erwin et al., 13 ( USNM, PBI_ OON 30000); same data, Oct. 07, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30056); same data, June 25, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30071); same data, Feb. 08, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30090); same data, June 21, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30095); same data, Feb. 08, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30109); same data, June 22, 1996, T. Erwin et al., 23 ( USNM, PBI_OON 30115); same data, Aug. 04, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30127); same data, Oct. 04, 1995, T. Erwin et al., 13 ( USNM, PBI_ OON 30145); same data, June 25, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30157); same data, Oct. 06, 1994, T. Erwin et al., 13 ( USNM, PBI_OON 30225); same data, Oct. 06, 1994, T. Erwin et al., 33 (13 mounted for SEM) ( MACN 34397, PBI_OON 30242); same data, Oct. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30252); same data, Oct. 06, 1994, T. Erwin et al., 13 ( USNM, PBI_OON 30268); same data, Oct. 04, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30298); same data, Oct. 07, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30450); same data, June 26, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30454); same data, Feb. 04, 1996, T. Erwin et al., 13 ( USNM, PBI_ OON 30467); same data, Feb. 04, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30471); same data, Oct. 05, 1995, T. Erwin et al., 23 ( USNM, PBI_OON 30488); same data, Feb. 04, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30516); same data, Oct. 07, 1995, T. Erwin et al., 23 ( USNM, PBI_OON 30526); same data, Oct. 06, 1994, T. Erwin et al., 13 ( USNM, PBI_OON 30538); same data, Oct. 06, 1994, T. Erwin et al., 13 ( USNM, PBI_OON 30545); same data, Feb. 07, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30658); same data, Oct. 06, 1994, T. Erwin et al., 13 ( USNM, PBI_OON 30693); same data, Oct. 07, 1995, T. Erwin et al., 23 ( USNM, PBI_OON 30712); same data, Oct. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30717); same data, Oct. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_ OON 30720); same data, Oct. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30727); same data, Oct. 07, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30733); same data, Oct. 06, 1994, T. Erwin et al., 13 ( USNM, PBI_OON 30820); same data, Oct. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30905); same data, June 22, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 30909); same data, Oct. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 30920); same data, Feb. 07, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37618); same data, Feb. 08, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37619); same data, Feb. 07, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37620); same data, June 21, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37621); same data, June 21, 1996, T. Erwin et al., 13 ( USNM, PBI_ OON 37622); same data, Feb. 07, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37623); same data, Feb. 07, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37624); same data, Feb. 13, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37625); same data, June 25, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37626); same data, Oct. 03, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37628); same data, Feb. 07, 1996, T. Erwin et al., 23 ( USNM, PBI_OON 37629); same data, Oct. 02, 1996, T. Erwin et al., 33 ( MACN 34398, PBI_OON 37630); same data, June 22, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37631); same data, Oct. 07, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 37632); same data, Feb. 05, 1996, T. Erwin et al., 23 ( USNM, PBI_OON 37633); same data, Feb. 07, 1996, T. Erwin et al., 13 ( USNM, PBI_OON 37634); same data, Aug. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 37635); same data, Oct. 02, 1996, T. Erwin et al., 23 ( USNM, PBI_ OON 37636); same data, Oct. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 37637); same data, Oct. 05, 1995, T. Erwin et al., 23 ( USNM, PBI_OON 37638); same data, Oct. 08, 1995, T. Erwin et al., 13 ( USNM, PBI_OON 37639); same data, Oct. 01, 1996, T. Erwin

et al., 13 ( USNM, PBI_OON 37640); same data, Oct. 06, 1994, T. Erwin et al., 13 (left palp mounted for SEM) ( USNM, PBI_OON 37644); Tiputini Biodiversity Station, near Yasuní National Park, 250 m, -0.63194°, -76.14416°, July 01, 1998, T. Erwin et al., 13 ( USNM, PBI_OON 37641).

Figures

FIGURE 71. Orchestina ecuatoriensis, male. A. Lateral. B. Ventral. C. Anterior. D. Cephalothorax, lateral view; arrow points to the sclerotized band of carapace. Scale bars: 0.2 mm. (PBI_OON 37631).

FIGURE 72. Orchestina ecuatoriensis, SEM of male cephalothorax. A. Dorsal view. B. Eyes dorsal view. C. Same, anterior. D. Eyes and chelicerae, lateral view; arrows showing the conical projections on chelicerae. E. Lateral view. Scale bars: A, D, E. 200 µm. B, C. 100 µm. (PBI_OON 29996). Abbreviations CA, clypeal apodemes.

FIGURE 73. Orchestina ecuatoriensis, SEM of male left chelicerae. A. Anterior view. B. Promargin (arrow showing cuticular projection). C. Ectal view. D. Same, detail. E. Detail of cheliceral fang (asterisk indicates a small projection on the base). Scale bars: A, C. 100 µm. B, D. 50 µm. E. 20 µm. (PBI_OON 30242).

FIGURE 74. Orchestina ecuatoriensis, SEM of male cephalothorax and palp. A. Labium and endites. B. Detail of labium. C. Sternum. D. Detail of cuticle texture of sternum. E. Copulatory bulb, dorsal view. F. Detail of embolus. Scale bars: A, C, E. 100 µm. B. 50 µm. D. 10 µm. F. 20 µm. (PBI_OON 29996, 37644).

FIGURE 75. Orchestina ecuatoriensis, SEM of male left legs I, II and IV. A. Prolateral setae of the terminal region of metatarsus I. B. Same, leg II. C. Claws IV, apical view. D. Trichobothrial socket of metatarsus II. E. Tarsal organ I. F. Tarsal organ IV. Scale bars: A–D. 20 µm. E, F. 10 µm. (PBI_OON 30242).

FIGURE 93. Orchestina spp., palps of males. A–C. O . ecuatoriensis. D–F. O. sotoi. G–I. O . shuar. A, D, G. Prolateral. B, E, H. Dorsal. C, F, I. Retrolateral. Scale bars: 0.2 mm. (PBI_OON 37627, 30057, 30217).

FIGURE 100. Orchestina spp., drawings of male palps. A, B. O . erwini. C–E. O. ecuatoriensis. F, G. O. sotoi. H, I. O. magna. J–L. O . shuar, right palp. M, N. O . waorani. A, F, H, M. Prolateral. J, L. Retrolateral. B, E, G, I, K, N. Dorsal. D. Scheme of sperm duct course. Images J and K have been flopped for consistency. Scale bars: 0.1 mm, except J, 0.25 mm. (PBI_OON 37574, 30516, 42145, 37646, 37650, 30217, 31114).