Orchestina pizarroi 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 pizarroi Izquierdo , new species

Figures 154 , 165D–F , 170E , 172E , 173C , 174I ,

175D , map 29

TYPES: Male holotype, female paratype and one juvenile from Chile: Región de Valparaíso (V): Provincia de Valparaíso, Quebrada El Tigre 2.5 km E Zapallar, 357 m, -32.55138°, -71.43277°, Feb. 12, 2011, M. Ramírez, E. Soto, J. Pizarro, deposited in MNSC, PBI_OON 42238; same data, 1 female paratype deposited in MACN 28745, PBI_OON 42241; same data, 2 female paratypes deposited in MACN 28645, PBI_OON 42226. Región de Coquimbo (IV): Provincia de Elqui: Cuesta Porotitos, N La Serena, xerophytic shrub, 156 m, -29.70805°, -71.30694° (MJR Loc. 31), Oct. 23, 2011, M.J. Ramírez, A. Ojanguren, J. Pizarro et al., 3 female paratypes deposited in MACN 28629, PBI_OON 42237.

ETYMOLOGY: This species is dedicated to Jaime Pizarro of the Universidad de La Serena, Chile, one of the collectors of the type specimens, for his constant support and friendship during our field trips to Chile.

DIAGNOSIS: Males can easily be distinguished by the presence of subtle modifications on the embolus, which has a prolateral laminar projection and a serrated final section just below the tip (figs. 165D–F, 173C, 174I). Females can be dis- tinguished by the shape of the genitalia with the external pockets placed far from each other and near the end of the sclerotized margin of the epigastric area and a basal, slightly sclerotized, additional receptaculum (figs. 170E, 172E).

MALE (PBI_OON 42238): Total length 1.16. Habitus as in figure 154A–C. CEPHALOTHO- RAX: Carapace orange. Labium rectangular. Endites anteromedian tip slightly pointed.

ABDOMEN: Round. LEGS: All legs missing except left leg I, shorter than carapace. GENITA- LIA: Unfortunately both copulatory bulbs are slightly collapsed, but the characters are still visible. Embolus with serrated projection on base, prolateral laminar extension; sperm duct slightly coiled (figs. 165D–F, 173C, 174I).

FEMALE (PBI_OON 42237): Total length 1.41. Habitus as in figure 154D–F. ABDOMEN: Ovoid, dorsum soft portions pale, cardiac area with four pairs of square purple patches, one additional pair longer near spinnerets, sides with four purple bands. LEGS: Spination, metatarsi: IV d0-0-1; p0-0-1; r0-0-1. GENITALIA: Epigastric region with strongly convex rim, external pockets widely separated, two weakly sclerotized epigastric ridges at both sides of median field, internal pockets absent; anterior receptaculum with one additional, weakly sclerotized receptaculum at base, apical region with well-developed anterior apodemes, lumen; posterior receptaculum absent, posterior apodeme formed by entire plate (figs. 170E, 172E).

DISTRIBUTION: Known from Coquimbo (Elqui Province) and Valparaíso (Valparaíso Province), Chile (map 29).

OTHER MATERIAL EXAMINED: None.

Figures

FIGURE 154. Orchestina pizarroi, habitus. A–C. Male holotype. D–F. Female paratype. A, D. Dorsal. B, E. Lateral. C, F. Ventral. Scale bars: A–C. 0.2 mm. D–F. 0.5 mm. (PBI_OON 42238, 42237).

FIGURE 165. Orchestina spp., male palps. A–C. O . caleta, holotype. D–F. O . pizarroi, holotype. A, D. Prolateral. B, E. Dorsal. C, F.Retrolateral. Scale bars 0.2 mm. (PBI_OON 42182, 42238).

FIGURE 170. Orchestina spp., female genitalia, ventral view. A. O . quenies, paratype. B. O . pandeazucar, paratype. C. O . caleta, paratype. D. O . totoralillo, holotype. E. O . pizarroi, paratype. F. O . molles, paratype. G. O . cachai. Arrows point to the external pockets. Asterisks show the sclerotized ridges in the epigastric fold area. Scale bars: 0.2 mm. (PBI_OON 2301, 50045, 42185, 30844, 42238, 1934, 14826).

FIGURE 172. Orchestina spp., cleared female genitalia, ventral view. A. O . quenies. B. O . pandeazucar, paratype. C. O . caleta, paratype. D. O . totoralillo, holotype. E. O . pizarroi, paratype. F. O . molles, paratype. G. O . cachai. Scale bars: 0.2 mm except E, 0.3 mm and G, 0.05 µm. (PBI_OON 1946, 42186, 50045, 30844, 42226, 1934, 14826).

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 175. Orchestina spp., drawings of female genitalia, ventral view. A. O . pandeazucar, paratype. B. O . caleta, paratype. C. O . totoralillo, holotype. D. O . pizarroi, paratype. E. O . molles, paratype. F. O . cachai. Scale bars: 0.1 mm. (PBI_OON 42186, 30844, 50045, 42241, 1934, 14826).