Ariadna changellkuk 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 changellkuk

description: Ariadna changellkuk Grismado, 2008
Figures 47‒48, 69
Ariadna changellkuk Grismado, 2008: 341, figs 3C‒H, 4E‒H (♂ holotype and 1♀ 1imm. paratypes from East of Curicó [34°59'S; 71°14'W], Las Tablas, Curicó Province, VII Región de Maule, Chile, II.1985, L.E. Peña leg., deposited in AMNH, examined).— World Spider Catalog (2018).
Additional material examined: CHILE: V Región de Valparaíso: Quillota Province: Las Palmas de Ocoa [32°57'S; 71°05'W], 1♂, 25.V.1984, R. Calderón leg. (AMNH); Palmas de Ocoa, Parque Nacional Campanas (32°55'56"S; 71°04'41"W), 1♂, 10.XII.1997 ‒ 10.I.1998, M. E. Irwin & E.I. Schlinger leg. (CAS 9046530); RM Región Metropolitana de Santiago: Santiago Province: Santiago, Renca [33°24,2'S; 70°43'W], 1♂, 23.IV.1984, L. Irrazával leg. (AMNH).
Diagnosis. Ariadna changellkuk is similar to A. crassipalpa, A. mollis, A. boesenbergi, A. calilegua, 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 by presenting the cephalothorax and abdomen conspicuosly elongated, legs short relatively to its body size (Fig. 47), and femur I‒II with ventral macrosetae (Fig. 47D, inset).
Description. Male (Renca—AMNH). Carapace and chelicerae brownish orange (Fig. 47A). Endites brownish yellow; labium dark brownish yellow. Sternum brownish orange with darker margins, and marbled with dark pigment (Fig. 47B). Palps orange (Fig. 48A‒B). Legs orange, with pairs I‒II darker (Fig. 47C‒E). Abdomen light grey, with a dark dorsal pattern comprising arrow-shaped marks, and ventral region dark (Fig. 47A‒B). Total length 5.52; carapace 2.96 long, 1.52 wide. Carapace elongated (Fig. 47A), with the cephalic region depressed, in lateral view. Palps: tibia incrassated, with the dorso-ventral diameter longer than the bulb; bulb sub-rectangular, midportion shorter than the embolus; embolus thickened, with a tubular, slightly twisted tip; cymbium with a dorsal chemosensory patch (Fig. 48A‒B). Legs: robust and coated with setae (Fig. 47C‒E); tarsal brush of putative chemosensory setae present in legs I‒III, but reduced. Leg formula: I-II-IV-III. Leg measurements: I, femur 2.08, patella 0.88, tibia 1.92, metatarsus 2.08, tarsus 0.6, total 7.56; II, 2.0, 0.84, 2.08, 1.88, 0.56, 7.36; III, 1.52, 0.6, 1.2, 1.16, 0.44, 4.92; IV, 1.6, 0.84, 1.52, 1.2, 0.44, 5.6. Macrosetae: I, femur d0-0-0-0-1/0-1-2, vr0-1-0-0-0-0-0; tibia d0-0-0-0-0-1-0, p0-1-0-1-0-1-0, vp1-0-1-0-1-0-1, vr2-0-1-0-1-1/0-1, r1-1-1-1/2-1-2/1-1-1; metatarsus p1-0-0-0-0- 0-0, vp0-1-1/0-0-1-0-1, vr0/1-1-0-1-1-1-1, r1-1-0-0/1-0-1-0 (Fig. 47C‒E); II, femur d0-1-0/1-1/0-1-2-0, p0-0-0-0- 1-1-0, vr0-0/1-0-0-0-0-0; tibia p0-1-0-1-0-1-0, vp0-0-1-0-1-0-1, vr2-1-1-1-1-0-1, r1-1-1-1-1-0-1-1; metatarsus p1- 0-0-1/0-0-0-0, vp1-0-0-1-0-0-1, vr1-1-0-1-0-1-1, r1-0-0-1-0-0-0; IV, femur d1-1-1-1/0-0-1/0-0, r0-0-0-0-0/1-1-0; tibia vp1/0-1-0-1-0-0-1-0/1, vr0-0-0-0-0-0-1-0, r0-1-0-0-0-0-0; metatarsus p0-0-1-0-0, vp1-1-0-1-1-2, vr metatarsal comb with 4 macrosetae, r0-1-0-0-0.
Female (Paratype). See Figs 47F‒I, 48C‒D and Grismado (2008: 341, figs 3C‒H, 4E‒H. 11B). Macrosetae: IV, metatarsus vp0-0-1-0-1/0-0-1, metatarsal comb with 4 macrosetae. Internal genitalia: anterior receptaculum with lobes similar in size, with the ventral lobe slightly projected in the proximal region and glandular ducts plate located in the median region (Fig. 48C‒D).
Variation. Male (n=3): Total length: 4.96‒5.52; carapace 2.84‒3.16 long, 1.48‒1.64 wide; femur I 2.08‒2.52.
Distribution. Center of Chile (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 77-78, DOI: 10.11646/zootaxa.4400.1.1, http://zenodo.org/record/1207641