Orchestina jaiba 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 jaiba Izquierdo , new species

Figures 162 , 164B , 167A–C , 169A , 171A , 173E , 174D , 176A , 178F , map 31

TYPES: Female holotype from Chile: Región de Los Lagos (X): Provincia de Osorno: Natl. Pk. Puyehue, Aguas calientes, 340 m, Dec. 13, 1998, to Dec. 17, 1998, M. Ramírez, L. Compagnucci, C. Grismado, L. Lopardo deposited in MNSC, PBI_OON 43295 ; same data, 2 female paratypes and 1 juvenile, sex unknown, deposited in MACN 15337, PBI_OON 14808. Argentina: Rio Negro: El Bolsón, Reserva Forestal Loma del Medio , -41.94388°, -71.56361°, Feb. 01, 2002, Paula Sackmann, 2 male paratypes and 2 juveniles, sex unknown, deposited in MACN 19298, PBI_OON 15058 ; same data, San Carlos de Bariloche, Parque Municipal Llao Llao, sendero a Villa Tacul , 841 m, -41.04389°, -71.54944°, Jan. 15, 2012, M. Guala, 2 female paratypes deposited in MACN 30753, PBI_OON 51195 .

ETYMOLOGY: The specific name is a noun in apposition taken from the jaiba , a crab from the Pacific coast of Chile used in many typical dishes.

DIAGNOSIS: Males are very similar to those of O. granizo , O. quenies , O. curico , and O. nahuelbuta by the shape of the bulb and the embolus. They can be separated from the first by differences in the morphology of the copulatory bulb; the embolus is shorter in O. granizo , which also has a protuberance near the base of that structure. They can be separated from O. curico by subtle differences in the shape of the labium and the endites, which are more convergent in O. curico . From O. quenies they can be separated by the presence of a small projection at the anterior margin of both endites, absent in O. jaiba (compare fig. 164B, G). Similarly, they can be distinguished from O. nahuenbuta by differences in labium; endites and male copulatory bulb (see figs. 164–167). Of all these species, O. jaiba has the longest embolus. Females can be distinguished by the small, paired, sclerotized epigas- tric ridges near each other on the median line of abdomen, by the position of the external pockets, nearly at the level of the anterior apodemes of the anterior receptaculum, and by the shape of the anterior receptaculum, with lumen formed by three chambers (figs. 169A, 171A, 176A).

MALE (PBI_OON 14871): Total length 1.09. Habitus as in figure 162A–C. CEPHALOTHO- RAX: Labium rectangular. Endites parallel (fig. 164B). ABDOMEN: Round, dorsum soft portions pale white, with pattern of lateral bands of purple pigment. GENITALIA: Without additional apophyses; embolus long; sperm duct slightly coiled (figs. 167A–C, 173E, 174D).

FEMALE (PBI_OON 14808): Total length 1.5.

ABDOMEN: Ovoid, dorsum soft portions without color pattern. GENITALIA: As in diagnosis, internal pockets absent; anterior receptaculum with rounded tip; posterior receptaculum absent, posterior apodeme formed by entire plate (figs. 169A, 171A, 176A).

DISTRIBUTION: Chile (Regions VII, IX and X) and Argentina (Rio Negro and Neuquén provinces) (fig. 178F, map 31).

OTHER MATERIAL EXAMINED: CHILE: Región del Maule (VII): Provincia de Curicó: El Coihue, 20 km E Potrero Grande, 1000 m, -35.18776°, -70.97105°, Apr. 01, 2003, J.E. Barriga, 1♀ ( CAS 9021109 , PBI _ OON 2310 ). Región de La Araucanía (IX): Provincia de Cautín : P.N. Conguillio, 11.1 km SE Laguna Captrén guard sta., Nothofagus obliqua , N. alpina, dense Chusquea, 1080 m , -38.66750°, -71.62016°, Dec. 23, 1996, to Feb. 05, 1997, A. Newton, M. Thayer, 1♀ ( FMNH, PBI _OON 43290) ; P.N. Huerquehue, exit, Nothofagus dombeyi , 823 m, -39.16944°, -71.72638°, Dec. 11, 2001, E. Arias et al., 13 ( CAS 9023361 , PBI _ OON 2305 ) ; Provincia de Malleco: Nahuelbuta Natl. Pk., Nothofagus and Araucaria forest, 1100 m, -37.82750°, -73.00888°, Feb. 12, 2005, M. Ramírez and F. Labarque, 1♀ ( MACN 15338 , PBI _OON 14858). Región de Los Rios (XIV): Provincia de Valdivia : Reserva Costera Valdiviana, -40.125866°, -73.561706°, 634 m, Jan.2007, J.E. Barriga, Fogging, 9♀, 63, 28 juveniles ( UCB, PBI _OON 51155). ARGENTINA: Provincia de Rio Negro: Departamento de Bariloche : El Bolsón, Reserva Forestal Loma del Medio , -41.94388°, -71.56361°, Feb. 01, 2002, Paula Sackmann, 23, 2 juveniles, sex unknown ( MACN 19298 , PBI _OON 15058) ; same data, Jan. 01, 2004, Paula Sackmann, 1♀ ( MACN 27953 , PBI _OON 15061) ; Nahuel Huapi N. Park, peatbog next to Frías Lake , 772 m, -41.04055°, -71.80527°, Dec. 29, 2010, M. Ramírez, V. Werenkraut, S. Aisen, 1♀ ( MACN 28667 , PBI _ OON 42153) ; San Carlos de Bariloche, Parque Municipal Llao Llao, sendero a Villa Tacul , 841 m, -41.04389°, -71.54944°, Jan. 15, 2012, beating vegetation, M. Guala, 1♀ ( MACN 28668 , PBI _OON 42251). Provincia de Neuquén: Departamento de Los Lagos : P.N. Nahuel Haupi, sendero a Cerro La Mona , cerca de Lago Espejo Chico, 840 m, -40.59083°, -71.70417°, Jan. 05, 2011, M.J. Ramírez and V. Werenkraut, 13, 1♀ ( MACN 30503 , PBI _OON 42188) .

Figures

FIGURE 162. Orchestina jaiba, habitus. A–C. male. D–F. Female. A, D. Dorsal. B, E. Anterior. C, F. Lateral. Scale bars: 0.5 mm except B, 0.2 mm. (PBI_OON 15058, 14808).

FIGURE 164. Orchestina spp., comparison of endites and labium of males. A. O . cachai. B. O . jaiba. C. O . pandeazucar. D. O . granizo. E. O . nahuelbuta. F. O . curico. G. O . quenies. Arrows point to the modification of endites. Scale bars: 0.2 mm. (PBI_OON 42203, 42186, 10557, 2309, 14871, 42335).

FIGURE 167. Orchestina spp., right male palps. A–C. O . jaiba. D–F. O . nahuelbuta. A, D. Prolateral. B, E. Dorsal. C, F. Retrolateral. Images flopped for consistency. Scale bars: 0.2 mm. (PBI_OON 15058, 2308).

FIGURE 169. Orchestina spp., female genitalia, ventral view. A. O . jaiba. B. O . osorno, holotype. C. O . curico, paratype. D. O . nahuelbuta, holotype. Abbreviation: SM, sclerotized margins in the epigastric area. Arrows point to the external pockets; asterisks show the sclerotized ridges in the epigastric fold area. Scale bars: 0.2 mm. (PBI_OON 42251, 51091, 2311, 2304).

FIGURE 171. Orchestina spp., cleared female genitalia, ventral view. A. O . jaiba, paratype. B. O. osorno, holotype. C. O . curico, paratype. D. O . nahuelbuta, holotype. Scale bars: 0.2 mm. (PBI_OON 14808, 51091, 2311, 2304).

FIGURE 173. Orchestina spp., drawing of male palps. A. O . pandeazucar, paratype. B. O . cachai. C. O . pizarroi, holotype. D. O . granizo, holotype. E. O . jaiba, paratype, right palp. F. O . nahuelbuta, paratype, right palp. G. O . curico, holotype. H. O . quenies, paratype. I. O . caleta, holotype. Images E and F flopped for consistency. Scale bars: 0.1 mm. (PBI_OON 42184, 14826, 10557, 15058, 2308, 14871, 42335, 42182).

FIGURE 174. Orchestina spp., drawings of male palps, dorsal view. A. O . pandeazucar. B. O . cachai. C. O . granizo, holotype. D. O . jaiba, paratype. E. O . curico. F. O . quenies, paratype. G. O . nahuelbuta, right palp. H. O . caleta, holotype. I. O . pizarroi, holotype. Images D and G flopped for consistency. Scale bars: 0.1 mm. (PBI_OON 42184, 14876, 10557, 15058, 14871, 42335, 2308, 42182, 42238).

FIGURE 176. Orchestina spp., drawings of female genitalia, ventral view. A. O . jaiba, paratype. B. O. osorno, holotype. C. O . curico, paratype. D. O . nahuelbuta, holotype (PBI_OON 2304). E. O . quenies. Arrows point to external pockets, asterisks to epigastric ridges. Scale bars: 0.1 mm. (PBI_OON 14808, 51091, 2311, 1946).

FIGURE 178. Habitats of Orchestina in Chile (A–D) and Argentina (E–F). A. Totoralillo Norte (Elqui), type locality of O . totoralillo. B. Parque Nacional Pan de Azúcar (Huasco), type locality of O . pandeazucar. C. Caleta Chañaral de Aceituno (Huasco), type locality of O . caleta. D. Parque Nacional La Campana (Quillota), type locality of O . granizo. E. Las Tumanas (San Juan), type locality of O . andianavarroi. F. One of the localities where O . jaiba can be found in Parque Nacional Nahuel Huapi, Argentina. Photos by A. Jaime Pizarro. B, C, F. Martín Ramírez. E. J.M. Andia-Navarro.