Orchestina caleta Izquierdo 2017, new species

Orchestina caleta Izquierdo, new species Figures 152, 153, 165A–C, 170C, 172C, 173I, 174H, 175B, 177A–C, 178C, map 29

TYPES: Male holotype from Chile: Región de Atacama (III): Provincia de Huasco: Caleta Chañaral de Aceituno, 89.9 km (por aire) SW Vallenar, rocky shore with Nolana sp., 10 m, -29.07194°, -71.48750°, Oct. 30, 2011, M.J. Ramírez, A. Ojanguren, J. Pizarro et al., deposited in MNSC, PBI_OON 42182; same data, 1 female paratype deposited in MACN 30604, PBI_OON 50045; same data, 1 female paratype deposited in MNSC, PBI_OON 50046.

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Males resemble those of O. curico, O. granizo, O. jaiba, and O. pizarroi in having a simple copulatory bulb, with no additional apophysis and a long embolus, but can be distinguished by the stronger embolus with slightly different sperm duct course (figs. 165A–C, 173I, 174H). Females resemble those of other Chilean species by the general shape of the anterior receptaculum but can be distinguished by the absence of external pockets and the shape of the anterior receptaculum with short, strong anterior apodemes in a straight transverse line (figs. 170C, 172C, 175B).

MALE (PBIOON_00042182): Total length 1.17. Habitus as in figure 152A–C. CEPHALO-

THORAX: Clypeus slightly sloping forward. Labium rectangular. Endites with one short, toothlike projection. ABDOMEN: Dorsum soft portions pale orange, round. GENITALIA: Bulb tapering apically; embolus strong, long; sperm duct slightly coiled (figs. 165A–C, 173I, 174H).

FEMALE (PBI_OON 42182): Total length 1.52. Habitus as in figure 152D–F. CEPHALOTHO- RAX: Carapace anteriorly narrowed to 0.49× its maximum width or less. ABDOMEN: Ovoid.

GENITALIA: Epigastric region without external pockets, with two weakly sclerotized, paired folds at both sides of median region, internal pockets absent; anterior receptaculum with welldeveloped lumen formed by one large chamber; posterior receptaculum absent, posterior apodeme formed by entire plate (figs. 170C, 172C, 175B).

DISTRIBUTION: Known from Atacama (Huasco Province) and Coquimbo (Limarí and Choapa Provinces), Chile (figs. 177A–C, 178C, map 29).

OTHER MATERIAL EXAMINED: CHILE: Región de Atacama (III): same data as holotype, 4♀ (MACN 28392, PBI_OON 50044). Región de Coquimbo (IV): Provincia de Limarí: 24 km S Socos Rt. 5, km., 360 m, -30.88333°, -71.61666°, Nov. 09, 1993, Platnick, Catley, Ramírez, and Allen, 1♀ (AMNH, PBI_ OON 1943). Provincia de Choapa: costa al S de Quebrada de Quereo, rocky shore with succulent plants, 4 m, -31.93556°, -71.51556°, Feb. 21, 2012, M.J. Ramírez, M.A. Izquierdo, P. Michalik, C. Wirkner, K. Huckstorf, 13 (MACN 28647, PBI_OON 42206); same data, 13, 14 juveniles, sex unknown (MACN 28648, PBI_OON 42207); costa en Quebrada de Quereo, 2.2 km S Los Vilos, rocky shore with Nolana sp., 1 m, -31.93250°, -71.51388°, Nov. 02, 2011, M.J. Ramírez, A. Ojanguren, J. Pizarro et al., 1♀ (MACN 28393, PBI_OON 42183); Los Vilos, -31.91667°, -71.51667°, Aug. 25, 1966, E. Schlinger, M. Irwin, 13 (AMNH, PBI_OON 51090).