Ariadna calilegua Grismado, 2008

Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114: 74-77

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Ariadna calilegua Grismado, 2008


Ariadna calilegua Grismado, 2008 

Figures 45‒46View FIGURE 45View FIGURE 46, 69View FIGURE 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)GoogleMaps  ; 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).GoogleMaps 

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 ‒CView FIGURE 1, 18A, FView FIGURE 18, 20A, FView FIGURE 20, 22A, FView FIGURE 22, 31A, EView FIGURE31, 45A, FView FIGURE 45, 47A, FView FIGURE 47, 50A, FView FIGURE 50), 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 ‒EView FIGURE 45); it differs from A. crassipalpa  by presenting the curvature of the midportion and embolus more marked, and a thinner embolus ( Fig. 46A ‒BView FIGURE 46); females are distinguished, except from A. crassipalpa  , by the presence of an anterior receptaculum with an irregular cuticle ( Fig. 46C ‒DView FIGURE 46). It differs from A. crassipalpa  by the presence of prolateral macrosetae on patellae I ‒II ( Fig. 45HView FIGURE 45).

Description. Male ( AMNH). Carapace and chelicerae reddish brown ( Fig. 45AView FIGURE 45). 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. 45BView FIGURE 45). Palps orange ( Fig. 46A ‒BView FIGURE 46). Legs orange, pairs I ‒II darker with dark pigment forming diffuse rings in the distal region of femur, patella, tibia and metatarsus ( Fig. 45C ‒EView FIGURE 45). Abdomen whitish grey, with a conspicuous dark dorsal pattern comprising arrow-shaped marks, and anterior ventral region dark ( Fig. 45A ‒BView FIGURE 45). 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 ‒BView FIGURE 46; Grismado, 2008: fig. 4C). Legs: robust and coated with setae ( Fig. 45C ‒EView FIGURE 45); 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 ‒EView FIGURE 45); 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 ‒GView FIGURE 45). 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 ‒IView FIGURE 45). Total length 8.8; carapace 4.2 long, 2.55 wide. Carapace with cephalic region elevated ( Fig. 45FView FIGURE 45). 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 ‒IView FIGURE 45). 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 ‒IView FIGURE 45); 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 ‒DView FIGURE 46).

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. 69View FIGURE 69).


American Museum of Natural History


University of Nottingham














Ariadna calilegua Grismado, 2008

Giroti, André Marsola & Brescovit, Antonio Domingos 2018

Ariadna calilegua

Grismado 2008: 338