Orchestina luispi 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 luispi Izquierdo , new species

Figures 187–191, 192A–D, 193, 194D–F, 195C,

H, 196B, D, F, 197E, 198A, B, E, map 32

TYPES: Male holotype from Argentina: Buenos Aires: Ciudad Autonoma de Buenos Aires, Reserva Ecológica Costanera Sur, Camino de los sauces, mirador al Canal Sur, - 34.61694°, -58.34722°, Oct. 24, 2011, L. Zapata, G. Rubio, M. Izquierdo, M. Guala y C. Grismado, in MACN 30750, PBI_ OON 42753 ; same data, 43, 13♀ paratypes deposited in MACN 28179, PBI_ OON 42262 ; same data, Margen de la Laguna Los Patos (LNP-Loc-011), 4 m, -34.608217, -58.353518, Sep. 29, 2014, beating, M. Izquierdo and L. Piacentini, 33, 5♀ paratypes deposited in AMNH, PBI_ OON 51156 .

ETYMOLOGY: The specific name is a noun in apposition in honour of Luis “Luispi” Piacen- tini, colleague and friend with whom we have shared many field trips and hours in the laboratory.

DIAGNOSIS: Males can easily be distinguished by the modified endites, with sclerotized curved projections (fig. 187D), and by the simple copulatory bulb (figs. 191A–C, 194D–F, 196B, D). Females resemble those of O . andianavarroi by the two long apodemes of the anterior receptaculum but can be distinguished by the less-sclerotized additional chambers of the anterior receptaculum (figs. 195C, H, 197E). In O . andianavarroi the female carapace is slightly more elevated than in this species.

MALE (PBI_ OON 14809 ): Total length 1.13. Habitus as in figure 187A, B. CEPHALOTHO- RAX: Carapace as in figure 188A–C. Clypeus as in figure 187C. Sternum as long as wide (figs. 187D). Labium rectangular. Endites anterome- dian tip with one strong, curved projection (fig. 187D). ABDOMEN: Round, in fresh specimens, abdomen with lateral bands of purple pigment. Setae as in figure 189F, G. Spinnerets: ALS with one major ampullate gland spigot and three piriform gland spigots seemingly without bases; PMS with one minor ampullate gland spigot; PLS with two aciniform gland spigots (fig. 189A–D); epiandrum without fusules (fig. 189E). LEGS: Tarsal organ, claws, trichobothria as in figure 190. GENITALIA: Cymbium yellow, bulb yellow, spherical; embolus long; sperm duct slightly coiled (figs. 191A–F, 192A–D, 194D–F, 196B, D, F).

FEMALE (PBI_ OON 14998 ): Total length 1.41. Habitus as in figure 187E, F. CEPHALOTHO- RAX (fig. 187A, C): Carapace texture as in figure 188F. Pedicel as in figure 188G. Sternum longer than wide (fig. 188H), yellowish white. Labium elongated hexagon (fig. 188I). Eyes as in figure 188B, D, E. ABDOMEN: Ovoid, dorsum soft portions pale orange. LEGS: Yellow. GENITA- LIA: External, internal pockets absent; anterior receptaculum with two long anterior apodemes (fig. 193A, B), three membranous chambers at base, lumen well developed; posterior receptaculum absent, posterior apodeme formed by entire plate (figs. 193, 195C, H, 197E).

DISTRIBUTION: Known from Ciudad Autonónoma de Buenos Aires and the provinces of Buenos Aires and Corrientes, Argentina (fig. 198A, B, E, map 32).

NATURAL HISTORY: Practically unknown. In the type locality the specimens were found in abundance in dry bases of Cortadeira and other grasses and trees. In field trips a couple was collected in copula. It seems to be a species found in gallery forests that are present in the last course of Uruguay River and Rio de La Plata estuary, although some specimens were found in other wetlands in Corrientes province.

OTHER MATERIAL EXAMINED: ARGENTINA: Provincia de Corrientes: Departamento de Mburucuya: P.N. Mburucuya, Camino del Uno, 64 m, -28.00083°, -58.09500°, May 27, 2011, to May 30, 2011, Rubio G., Izquierdo M. and Piacentini L., 53, 3 juveniles, sex unknown ( MACN 28273, PBI_ OON 43392 ). Provincia de Buenos Aires: Partido de Campana: Reserva Natural Otamendi, 0.3 km instalaciones R.N. Otamendi, in remainder forest of Bacharis salicifolia and Celtis , 17 m, -34.22805°, -58.90027°, Nov. 15, 2012, A.O. Porta, G.D. Rubio, L.N. Piacentini, E.M. Soto, 1♀ ( MACN 29394, PBI_ OON 42336 ); Reserva Natural Otamendi, 32 m, -34.22527°, -58.90000°, Apr. 22, 2006, M. Ramírez, F. Labarque, C. Sosa, 23, 1♀ ( MACN 11084, PBI_ OON 14809 ); same data, June 10, 1997, Ramírez. Compagnucci, Grismado, Uehara, 23 ( MACN 15341, PBI_ OON 14810 ); San Isidro: Acassuso, Reserva Municipal Refugio Natural Educativo Ribera Norte, Sauzal, 7 m, -34.46729, -58.49365, July 21, 2014, Grismado, Cristian José, Rodríguez Landó, R. et al. 13 ( MACN 32049, PBI_ OON 51194 ); Partido de La Plata: Paseo del Bosque (-34.933333°, -57.95°), under bark of Eucalyptus sp. , June 14, 2011, J. Barneche, 1♀ ( MACN 27844, PBI_ OON 43367 ); same data, June 15, 2011, J. Barneche, 2♀ ( MACN 27845, PBI_ OON 43380 ); Partido de San Miguel: Campo de Mayo, Km 26 F. C. Gral. Belgrano (-34.530721°, -58.641104°), in nest of Anumbius annumbi , May 07, 2005, Paola Turienzo, 13, 1♀ ( MACN 15339, PBI_ OON 14811 ); Partido de San Pedro: Reserva Municipal Vuelta de Obligado, -33.59861°, -59.80805°, Apr. 11, 2009, O.N. Olejnik and N. López, 1♀ ( MACN 20508, PBI_ OON 14939 ). Ciudad Autonoma de Buenos Aires: Facultad de Veterinaria (-34.593740°, -58.483361°), in nest of Myopsitta monachus in the floor, July 07, 2009, P. Turienzo, 1♀ ( MACN 23118, PBI_ OON 14998 ); Reserva Ecológica Costanera Sur, Laguna de los Macáes, -34.60583°, -58.34861°, Oct. 24, 2011, L. Zapata, G. Rubio, M. Izquierdo, M. Guala y C. Grismado, 13, 1♀ ( MACN 28185, PBI_ OON 42141 ); same data, 1♀ ( MACN 28184, PBI_ OON 42265 ); same data, grasses, -34.60472°,- 58.34916°, Oct. 24, 2011, L. Zapata, G. Rubio, M. Izquierdo, M. Guala y C. Grismado, 23 ( MACN 28182 PBI_ OON 42261 ); 1♀ ( MACN 28182, PBI_ OON 42261 ); same data, grasses, -34.60472°, -58.34916°, Oct. 24, 2011, L. Zapata, G. Rubio, M. Izquierdo, M. Guala y C. Grismado, 13, 1♀ ( MACN 28183, PBI_ OON 42264 ); same data, Bosque de Tessaria integrifolia , -34.60472°, - 58.34972°, Oct. 24, 2011, L. Zapata, G. Rubio, M. Izquierdo, M. Guala y C. Grismado, 23, 5♀ ( MACN 28186, PBI_ OON 42263 ); same data, camino de los sauces: mirador al Canal Sur, -34.61694°, -58.34722°, Nov. 04, 2011, C. Grismado and L. Zapata, 4♀ ( MACN 28237, PBI_ OON 42176 ); same data, 13, 1♀ ( MACN 28181 PBI_ OON 42260 ); same data, 43, 13♀ ( MACN 28179 PBI_ OON 42262 ); same data, 13, 3♀ ( MACN 28180, PBI_ OON 42266 ); same data, litter of Cortadeira sp, -34.61694°, -58.34722°, Nov. 04, 2011, C. Grismado and L. Zapata, 23, 4♀ ( MACN 28236, PBI_ OON 42177 ); same data, Canal de Viamonte, -34.60458°, -58.35008°, Dec. 08, 2008, P. Turienzo, 1♀ ( MACN 26833, PBI_ OON 43319 ); same data, Margen de la Laguna Los Patos (LNP-Loc-011), 4 m, -34.608217, -58.353518, Sep. 29, 2014, beating, M. Izquierdo and L. Piacentini, 33, 3♀ ( MRAC, PBI_ OON 51170 ); same data, 13, 6♀ ( USNM, PBI_ OON 51184 ); same data, 13 ( MACN 32967, PBI_ OON 51072 ); same data 1♀ ( MACN 32966, PBI_ OON 51071 ); same data, 1♀ ( MACN 34539, PBI_ OON 42742 ). URUGUAY: Rivera: Cerro Miriñaque (-30.9025°, -55.550556°), bosque de cornisa, Oct. 14, 2012, G-vac (Garden-Vacuum method), M. Simo, 13 ( FCE- 7061).