Lobizon ojangureni Piacentini & Grismado, 2009, sp. nov.
Creators: name: Piacentini, Luis N.
name: Grismado, Cristian J.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Lycosidae
Lobizon
Lobizon ojangureni

description: Lobizon ojangureni sp. nov.
(Figs 2, 49–58, 86)
Type material. Male holotype (MACN-Ar 18319) and female paratype (MACN-Ar 18318) from Argentina: Jujuy: Parque Nacional Calilegua, near Monolito, 2340’52.3”S, 6454’ 05.1 W (+/- 13 m, WGS84), elev. 1709 m (GPS), C. Grismado, M. Izquierdo, F. Labarque, G. Rubio, M. Burger, P. Michalik, P. Carrera, A. Ojanguren-Affilastro & C. Mattoni coll., 06–11.XII.2008; hand collecting.
Other material examined. ARGENTINA: Jujuy: same data as the type material, 3 males, 6 females, 6 immatures (MACN-Ar 18321); same data, 1 female (MACN-Ar 18322); same data, 1 female (MACN-Ar 18320); same locality, 1700 m, 9.VIII.1997, Ramírez M. & Compagnucci L., 1 male (MACN-Ar 16322); same locality, road to Valle Grande, ca. 23°40’S, 64°54’W, 1700 m, XI.1976, Galiano M. E., 1 female (MACN-Ar 16310); Parque Nacional Calilegua: 20,7 km above park entrance, ca. 23°39’S, 64°57’W, 23.IX.1995, Ramírez M., Goloboff P. A. & Szumik C., 2 males (MACN-Ar 16313); same locality and collectors, 19.7 km above park entrance, 23–24. IX.1995, 2 males (MACN-Ar 16312); same data, 1 male, 2 females (MACN-Ar 16311); same locality, near Sevenguillar, 3 km above Mesada Las Colmenas, ca. 23°44’S, 64°51’W, 7.IX.1997, Ramírez M. & Compagnucci L., 1 male (MACN-Ar 16318); same locality and collectors, 1500 m, 8.VIII.1997, 1 male, 1 immature (MACN-Ar 16314); same data, 2 females, 10 immatures (MACN-Ar 16315); Seccional Aguas Negras, 23°45’43.3”S, 64°51’04.7”W (+/- 10 m., WGS84), 605 m, 06– 11.XII.2008, Grismado C., Izquierdo M., Labarque F., Rubio G., Burger M., Michalik P., Carrera P., Ojanguren A. & Mattoni C., 1 female (MACN-Ar 18323); same data, 1 female (MACN-Ar 18324). Salta: Ojo de Agua, Ruta Nac. 9 km 1640–1642 m., border with Jujuy, ca. 24°31’S, 64°47’W, 22.IX.1995, Ramírez M., Goloboff P. A. & Szumik C., 1 male (MACN-Ar 16325). Tucumán: Ruta 307, km 36, ca. 27°01’S, 65°39’W, 1.XI.2004, Grismado C. & Compagnucci L. A., 1 female (MACN-Ar 16316); same data, 2 males, 2 females, 1 immature (MACN-Ar 16320); Cochuna, ca. 27°20’S, 65°53’W, 2.VIII.1995, Ramírez M. & Goloboff P. A., 4 females (MACN-Ar 16321); road between Tucumán and Tafí del Valle, wet forest, ca. 27°00’S, 65°36’W, 1400 m, 13.IX.1965, Wegrausch, 3 females (MACN-Ar 16319). Catamarca: Esquina Grande, ca. 23°43'S, 65°58'W, 17.VII.1950, Cranwell J. & Navas, 1 male (MACN-Ar 16324).
Diagnosis. Females of L. ojangureni sp. nov. are very similar to L. minor in the shape of the epigyne, but the ventral projecting lip has a thinner border and the copulatory ducts are more strongly convoluted (Figs 55, 56). Males resemble those of L. corondaensis in the broad palp with very long embolus and curved tip of the terminal apophysis, but L. ojangureni sp. nov. have a more deeply excavated tegulum, exposing a large sector of the bulb in ventral view. The embolus is longer than in L. corondaensis, with a more distal origin (Figs 57– 58).
Description. Male (holotype). Dorsal shield of prosoma brown with grey radial pattern, light median band narrowing posteriorly and pale submarginal bands. Dorsal shield of prosoma covered with short brown setae; median band with few long black bristles from the fovea to the PLE; four long black bristles on the clypeal condyle anteriorly of AER. Sternum yellow, sparsely covered with brown bristles, more abundant on the margins. Labium dark grey. Chelicerae darker than labium, reddish-brown, covered with brown bristles. Opisthosoma dark olive-grey; light yellow lanceolate mark on the cardiac area, followed and flanked by a series of light reddish patches, more abundant in the posterior half. Venter yellow with some dusk patches; spinnerets yellow. Legs brown with dark annulations. Palp with a dense patch of bristles on venter of femur, and white setae on dorsal section of cymbium. Palp with a very long embolus with apical origin, tegulum subdivided, terminal apophysis long with tip curved retro-dorsally, median apophysis laminar and longitudinally oriented. The sperm ducts run ventrally from retrolateral to prolateral, and make a loop in the retroventral side of the tegulum. Leg formula IV> I> II> III. Spination of leg I: femur, three dorsal, one apico-prolateral; tibia, three ventral pairs and one prolateral; metatarsus three ventral pairs and one prolateral spine.
Female (paratype). Colouration and setae arrangement as in male. Spination of leg I: femur, three dorsal, one apico-prolateral; tibia, three ventral pairs, and two prolateral spines; metatarsus, three ventral pairs. Epigyne with a lip projecting ventrally and posteriorly, rounded furrows on the copulatory openings, divided by a central septum; spermathecae and copulatory ducts are visible trough the ventral cuticle. Spermathecae and vulval chambers of similar size, cylindrical stalks and copulatory ducts strongly convoluted (Figs 55–56).
Measurements. Female, paratype (male, holotype): TL 5.16 (4.87), PL 2.83 (2.70), PW 2.00 (2.00), PH 0.93 (0.90), OL 2.33 (2.17). Eyes: AME 0.07 (0.07), ALE 0.07 (0.07), PME 0.28 (0.28), PLE 0.21 (0.21). Row of eyes: AM 0.50 (0.50), PME 0.67 (0.69), PLE 0.86 (0.86). Sternum (length/width) 1.30/1.07 (1.23/ 1.07). Labium (length/width) 0.39/0.40 (0.34/0.36). Legs: length of segments (femur + patella/tibia + metatarsus + tarsus = total length): Pedipalp 1.00 + 0.93 + - + 0.77 = 2.70, I 1.80 + 2.30 + 1.30 + 0.73 = 6.13, II 1.67 + 2.13 + 1.30 + 0.77 = 5.87, III 1.67 + 1.80 + 1.50 + 0.77 = 5.74, IV 2.17 + 3.80 + 2.33 + 0.97 = 9.27 (pedipalp 1.00 + 0.93 + - + 1.20 = 3.13, I 1.80 + 2.37 + 1.40 + 0.77 = 6.34, II 1.67 + 2.13 + 1.40 + 0.77 = 5.97, III 1.57 + 1.87 + 1.47 + 0.77 = 5.68, IV 2.13 + 2.60 + 2.37 + 0.97 = 8.07).
Variation. Females (males) (range, mean±s.d.): TL 4.47 – 5.93, 5.01±0.42; CL 2.40 – 2.83, 2.64±0.17; CW 1.67 – 2.10, 1.90±0.16; n = 10; (TL 4.40 – 5.24, 4.71±0.28; CL 2.37 – 2.70, 2.58 0.11; CW 1.77 – 2.97, 2.18±0.51; n = 10).
Etymology. The specific epithet is a patronymic in honor of the arachnologist Andrés A. Ojanguren- Affilastro in recognition of his help in collecting this species in the Parque Nacional Calilegua, and also for his assistance and companionship during many other productive trips in Argentina.
Natural History. This species was collected at the type locality and in Tucumán by hand or sifting leaf litter in the Yungas. Some females were collected with eggsacs in December.
Distribution. Montane forest (Yungas) in northwestern Argentina (Jujuy, Salta, Tucumán and Catamarca) (Fig. 86).
description: Published as part of Piacentini, Luis N. & Grismado, Cristian J., 2009, Lobizon and Navira, two new genera of wolf spiders from Argentina (Araneae: Lycosidae), pp. 1-33 in Zootaxa 2195 on pages 13-19, DOI: 10.5281/zenodo.189469