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

publication ID	https://doi.org/ 10.11646/zootaxa.4400.1.1
publication LSID	lsid:zoobank.org:pub:59CC08B8-5B13-42EC-943E-C930D7D0DD7F
DOI	https://doi.org/10.5281/zenodo.5987898
persistent identifier	https://treatment.plazi.org/id/039B87D1-FFAD-B156-169B-FA47C5F4FC25
treatment provided by	Plazi
scientific name	Ariadna calilegua Grismado, 2008
status

Treatment

Ariadna calilegua Grismado, 2008 View in CoL

Figures 45‒46 View FIGURE 45 View FIGURE 46 , 69 View FIGURE 69

Ariadna calilegua Grismado, 2008: 338 View in CoL , 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‒C View FIGURE 1 , 18A, F View FIGURE 18 , 20A, F View FIGURE 20 , 22A, F View FIGURE 22 , 31A, E View FIGURE31 , 45A, F View FIGURE 45 , 47A, F View FIGURE 47 , 50A, F View 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‒E View FIGURE 45 ); it differs from A. crassipalpa by presenting the curvature of the midportion and embolus more marked, and a thinner embolus ( Fig. 46A‒B View FIGURE 46 ); females are distinguished, except from A. crassipalpa , by the presence of an anterior receptaculum with an irregular cuticle ( Fig. 46C‒D View FIGURE 46 ). It differs from A. crassipalpa by the presence of prolateral macrosetae on patellae I‒II ( Fig. 45H View FIGURE 45 ).

Description. Male (AMNH). Carapace and chelicerae reddish brown ( Fig. 45A View 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. 45B View FIGURE 45 ). Palps orange ( Fig. 46A‒B View 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‒E View FIGURE 45 ). Abdomen whitish grey, with a conspicuous dark dorsal pattern comprising arrow-shaped marks, and anterior ventral region dark ( Fig. 45A‒B View 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‒B View FIGURE 46 ; Grismado, 2008: fig. 4C). Legs: robust and coated with setae ( Fig. 45C‒E View 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‒E View 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‒G View 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‒I View FIGURE 45 ). Total length 8.8; carapace 4.2 long, 2.55 wide. Carapace with cephalic region elevated ( Fig. 45F View 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‒I View 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‒I View 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‒D View FIGURE 46 ).