Ariadna calilegua 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 calilegua

description: Ariadna calilegua Grismado, 2008
Figures 45‒46, 69
Ariadna calilegua Grismado, 2008: 338, figs 3A‒B, 4A‒D (♂ holotype from Mesada de las Colmenas, Ruta Provincial no. 83, Parque Nacional Calilegua [23°55'S; 64°50'W], Ledesma department, Jujuy Province, Argentina, 25.X.1983, G. Lingua leg., deposited in MACN-Ar 10087, examined).— Grismado & Izquierdo (2014: 154, figs 14a‒b).— World Spider Catalog (2018).
Additional material examined. ARGENTINA: Salta Province: 17km N La Caldera [24°36'S; 65°23'W], Alto de la Sierra, 1550m, 1♂, 2‒30.XII.1987, S. & J. Peck leg. (AMNH); 22km N La Caldera, El Ucumar, 1550m, 1♂ (AMNH); Tucumán Province: Tapia [26°36'11"S; 65°15'41"W], 700m, 1♀ 2imm., J. Daniels leg. (NHM 1903.4.1.284‒286).
Diagnosis. Ariadna calilegua is similar to A. crassipalpa, A. mollis, A. boesenbergi, A. changellkuk, A. levii 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 differ, except A. crassipalpa, by the presence of males with metatarsi I bearing a blunt ventro-prolateral macrosetae on an apophysis located on its median region (Fig. 45C‒E); it differs from A. crassipalpa by presenting the curvature of the midportion and embolus more marked, and a thinner embolus (Fig. 46A‒B); females are distinguished, except from A. crassipalpa, by the presence of an anterior receptaculum with an irregular cuticle (Fig. 46C‒D). It differs from A. crassipalpa by the presence of prolateral macrosetae on patellae I‒II (Fig. 45H).
Description. Male (AMNH). Carapace and chelicerae reddish brown (Fig. 45A). Endites brownish orange; labium dark brownish orange. Sternum brownish orange, with darker margins, marbled with dark pigment, and three pairs of dark marginal areas (Fig. 45B). Palps orange (Fig. 46A‒B). Legs orange, pairs I‒II darker with dark pigment forming diffuse rings in the distal region of femur, patella, tibia and metatarsus (Fig. 45C‒E). Abdomen whitish grey, with a conspicuous dark dorsal pattern comprising arrow-shaped marks, and anterior ventral region dark (Fig. 45A‒B). Total length 9.4; carapace 4.56 long, 2.96 wide. Palps: tibia incrassated, with the dorso-ventral diameter shorter than the bulb; bulb sub-rectangular, mid-portion and embolus of equal length; embolus tapered, with a twisted tip (Fig. 46A‒B; Grismado, 2008: fig. 4C). Legs: robust and coated with setae (Fig. 45C‒E); tarsal brush of putative chemosensory setae present in II‒IV. Leg formula: I-II-IV-III. Leg measurements: I, femur 4.08, patella 1.64, tibia 3.44, metatarsus 4.08, tarsus 0.88, total 14.12; II, 3.92, 1.6, 3.52, 3.8, 0.92, 13.76; III, 3.08, 1.28, 2.24, 2.6, 0.88, 10.08; IV, 3.32, 1.64, 2.56, 2.72, 0.8, 11.04. Macrosetae: I, femur d0-0-0-0-0-0-2, p0-0-0-0-0-2-1; patella p0-0-1; tibia p2-1-0-1-0-1-0, vp1-0-1-0-1-0-1, vr1-0-1-0-1-0-1, r2-1-0-1-0-1-0; metatarsus vp1-0-0-1(blunt/ apophysis)-0-0-1, vr1-0-0-1-0-0-1 (Fig. 45C‒E); II, femur d0-0-1-0-0-1-1, p0-0-0-0-1-2/1-0; patella p0-0-1; tibia p0-1-0-1-0-1-0, vp0-0-1-0-1-0-1, vr1-0-1-0-1-0-1, r2-1-0-1-0-1-0; metatarsus vp1-0-0-1-0-0-1, vr1-0-0-1-0-0-1, r0-1-0-0-1/0-0-0; IV, femur d1-1/2-1-1-0-1-0, r0-0-0-0-0-1-0; metatarsus vp0-0-0-0-0-0-2/1, vr metatarsal comb with 5-6 macrosetae.
Female (NHM 1903.4.1.284–286). Coloration of carapace, chelicerae, endites, sternum and abdomen as in male (Fig. 45F‒G). Palps reddish brown, darkening gradually in distal direction. Legs reddish brown, pairs I‒II darker and with dark pigment distributed in the distal region of the femur, and uniformly in the other segments (Fig. 45H‒I). Total length 8.8; carapace 4.2 long, 2.55 wide. Carapace with cephalic region elevated (Fig. 45F). Legs: robust and densely coated with setae, mainly on the ventral region of pairs I‒III; legs I‒II with ventro-prolateral and ventro-retrolateral tibial macrosetae of similar size, and metatarsal macrosetae of different sizes (Fig. 45H‒I). Leg formula: I-II-IV-III. Leg measurements: I, femur 3.05, patella 1.4, tibia 2.25, metatarsus 2.1, tarsus 0.65, total 9.45; II, 2.8, 1.4, 2.3, 2.05, 0.65, 9.2; III, 2.2, 1.15, 1.5, 1.5, 0.6, 6.95; IV, 2.6, 1.45, 2.0, 1.65, 0.6, 8.3. Macrosetae: I, femur D0-0-0-0-0-2-0, P0-0-0-0-2-1-0; patella P1/0; tibia P0-1-0-1-0-1-0, vp1-0-1-0-1-0-1, vr1-0-1-0-1-0-1, R0- 1-0-1-0-0; metatarsus V2-1 -2-2-2-2-2-2-2 (Fig. 45H‒I); II, D0-0-0-0-0-2-0, P0-0-0-0-1-1-0; patella P1; tibia P0-1- 0-1-0-1-0, vp0-0-1-0-1-0-1, vr1-0-1-0-1-0-1; metatarsus vp1-1-0-1-1-1-1-1-1, vr1-1-1-1-1-1-1-1-1; IV, femur D1- 0-0-0-0-0-0; metatarsus vp 0-0-0-0-0-0-1, vr metatarsal comb with 6 macrosetae. Internal genitalia: anterior receptaculum with expanded lobes and glandular plate located in the median region of it (Fig. 46C‒D).
Variation. Male (n=3): Total length 7.19‒9.4; carapace 3.6‒4.56 long, 2.32‒2.96 wide; femur I 3.36‒4.08.
Distribution. North of Argentina (Fig. 69).
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 74-77, DOI: 10.11646/zootaxa.4400.1.1, http://zenodo.org/record/1207641