Ariadna levii Grismado 2008
Creators: name: Giroti, André Marsola
name: Brescovit, Antonio Domingos
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Segestriidae
Ariadna
Ariadna levii

description: Ariadna levii Grismado, 2008
Figures 50‒51, 70
Ariadna levii Grismado, 2008: 345, figs 5D‒E, 6D‒I (♂ holotype from N of Tiltil [33°04'00"S; 71°01'59"W], 800‒1300m, Cuesta La Dormida, Santiago, RM Región Metropolitana de Santiago, Chile, 13‒18.XI.1982, L. Peña leg., deposited in AMNH, examined; ♂ paratype from farmland, Isla Teja, ValdiVia, X Región de Los Lagos, Chile, 6.III.1965, H. LeVi leg., deposited in MCZ 47261, not examined).— World Spider Catalog (2018).
Additional material examined: CHILE: V Región de Valparaíso: Petorca Province: Zapallar [32°33'13"S; 71°27'32"W], Acon., 1♂, 27.XI.1950, Ross & Michelbacher leg. (CAS 9046508); Valparaíso [33°03'S; 71°37'W], 1♀, IV.1970, Fritz leg. (MACN-Ar 10509); VII Región de Maule: Cauquenes Province: Cauquenes, R. N. Los Ruiles, elev. 174M (35°50'02.6"S; 72°30'35.7"W), 3♂ 1imm., 17.VII.2010, A. Ojanguren et al. leg. (MACN-Ar 29452); Curicó Province: Curicó, Las Tablas, East of Curicó (34°59'S; 71°14'W), 2♀ 2imm., II.1985, L. Peña leg. (AMNH); IX Región de Araucanía: Cautín Province: Temuco, Cerro Ñielol [38°43'40.91"S; 72°32'34.42"W], 1♂, 15.I.1989, M. Ramírez leg. (MACN-Ar 10088); XIV Región de Los Ríos: Valdivia Province: Valdivia [39°49'51"S; 73°13'15"W], 3♀, 1983, E. Krahmer leg. (MHNS 836).
Diagnosis. Ariadna levii is similar to A. crassipalpa, A. mollis, A. boesenbergi, A. calilegua, A. changellkuk and A. perkinsi due to the dark abdominal pattern with arrow-shaped marks (Figs 1A‒C, 18A, F, 20A, F, 22A, F, 31A, E, 45A, F, 47A, F, 50A, F), but males differ by the presence of metatarsi I straight with two apophyses: one ventro-prolateral bearing a short and curved macrosetae, and a ventro-retrolateral one, with non-modified macrosetae (Fig. 50C‒E; Grismado 2008, fig. 6H); females are distinguished by the presence of a dorsal lobe longer than the ventral lobe (Fig. 51C‒D).
Description. Male (MACN-Ar 29452). Carapace and chelicerae reddish brown (Fig. 50A). Endites brownish orange; labium dark brownish orange. Sternum brownish orange, with darker margins, marbled with dark pigment, and three pairs of fainted dark marginal areas (Fig. 50B). Palps light orange (Fig. 51A‒B). Legs brownish orange, pairs I‒II darker with dark pigment forming diffuse rings in the distal region of metatarsus (Fig. 50C‒E). Abdomen whitish grey, with a conspicuous dark dorsal pattern comprising arrow-shaped marks (Fig. 50A‒B). Total length 7.24; carapace 3.44 long, 2.24 wide. Palps: tibia incrassated, with the dorso-ventral diameter slightly shorter than the bulb; cymbium with a dorsal chemosensory patch; bulb rounded, mid-portion about two times shorter than the embolus; transition mid-portion/embolus conspicuous; embolus tubular and tapered (Fig. 51A‒B). Legs: robust and densely coated with setae (Fig. 50C‒E); tarsal brush of putative chemosensory setae present in legs I‒III, but reduced. Leg formula: I-II-IV-III. Leg measurements: I, femur 2.88, patella 1.24, tibia 2.6, metatarsus 2.76, tarsus 0.72, total 10.2; II, 2.6, 1.28, 2.76, 2.64, 0.72, 10.0; III, 2.04, 1.0, 1.6, 1.6, 0.56, 6.8; IV, 2.32, 1.08, 2.04, 1.76, 0.6, 7.8. Macrosetae: I, femur d0-0-0-0-1-1/2-0, p0-0-0-0-2-1-0; patella p0-1-0; tibia d0/1-2/1-0-2-0-1/2-0, p0-0-0-1-0- 1-0, vp1-0-1-0-1-0-1, vr2-0-1-0-1-0-1, r1-1-1-1-1-1-0; metatarsus vp1-0-0-1(reduced/apophysis)-0-0-1, vr0-0-0-1- 0-0-1 (Fig. 50C‒E); II, femur d0-1/0-0-1-0-1-0-2-0, p0-0-0-0-0-0-1-1-0; patella p0-1-0; tibia d0-0-0-1-0-1-0, p1-0/ 1-0-1-0-1-0, vp0-0-0-0-1-0-1, vr2-0/1-1-0-1-0-1, r1-1-1-1-1-1-0; metatarsus vp1-0-0-1-0-0-1, vr1-0-0-1-0-0-1, r0- 1-0-0-0-0-0; IV, femur d1-1-1-0/1-1-0/1-1-0, r0-0-0-0-0-0-1-0; tibia vp0-0-1/0-0-0-0-1, vr0-0-0-0-0-0-1, r0-0-0-0- 0-1/0-0; metatarsus p1-0-0-0-0-0-0, vp1-0-0-1-0-0-1, vr metatarsal comb with 4 macrosetae.
Female (MHNS 836). Coloration of carapace, chelicerae, endites, sternum and abdomen as in male (Fig. 50F‒G). Palps brownish orange, with tibia and tarsus reddish. Legs brownish orange, with pairs I‒II darker. Tibia, metatarsus e tarsus I‒II reddish orange (Fig. 50H‒I). Total length 9.68; carapace 3.6 long, 2.12 wide. Legs: robust and densely coated with setae; legs I‒II with ventro-prolateral and ventro-retrolateral tibial macrosetae of similar size, and metatarsal macrosetae of different sizes (Fig. 50H‒I). Leg formula: I-II-IV-III. Leg measurements: I, femur 2.2, patella 1.12, tibia 1.96, metatarsus 1.68, tarsus 0.56, total 7.52; II, 1.96, 1.04, 1.88, 1.52, 0.52, 6.92; III, 1.6, 0.92, 1.2, 1.12, 0.48, 5.32; IV, 2.0, 1.16, 1.6, 1.28, 0.52, 6.56. Macrosetae: I, femur d0-0-0-0-1-2-0, p0-0-0-0-2- 1-0; patella p1/0; tibia p0-1/0-0-1-0-1-0, vp1-0-1-0-1-0-1, vr1-0-1-0-1-0-1, r0-1-0-1/0-0-1-0; metatarsus vp1-1-1- 1-1-1-1-1, vr1-1-1/0-1-1-1-1-1 (Fig. 50H‒I); II, femur d0-0-0-0-1/0-2-0, p0-0-0-0-1-1-0; tibia p0-1-0-1-0-1-0, vp1(slender)-0-1-0-1-0-1, vr1-0-1-1-1-0-1, r1/0-0-0-0-0-0-0; metatarsus vp1-1-1-1-1-1-1-1, vr1-1-1-0-1-1-1-1; IV, femur d0-1/0-1-0-0-0-0, r0-0-0-0-0-0/1-0; metatarsus vp1/0-1-0-0-0-0-1, vr metatarsal comb with 4-5 macrosetae. Internal genitalia: anterior receptaculum with the glandular ducts plate in the median region (Fig. 51C‒D).
Variation. Male (n=6): Total length 5.08‒7.24; carapace 2.08‒3.72 long, 1.84‒2.28 wide; femur I 2.44‒3.0. Female (n=5): Total length 7.44‒9.68; carapace 3.2‒4.16 long, 1.96‒2.48 wide; femur I 2.04‒2.76.
Distribution. Center of Chile (Fig. 70).
description: Published as part of Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), pp. 1-114 in Zootaxa 4400 (1) on pages 81-83, DOI: 10.11646/zootaxa.4400.1.1, http://zenodo.org/record/1207641