Ariadna changellkuk 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: 77-78

publication ID 10.11646/zootaxa.4400.1.1

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Ariadna changellkuk Grismado, 2008


Ariadna changellkuk Grismado, 2008 

Figures 47‒48View FIGURE 47View FIGURE 48, 69View FIGURE 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);GoogleMaps  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 9046530View Materials);GoogleMaps  RM Región Metropolitana de Santiago: Santiago Province : Santiago, Renca [33°24,2'S; 70°43'W], 1♂, 23.IV.1984, L. Irrazával leg. ( AMNH).GoogleMaps 

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 ‒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 by presenting the cephalothorax and abdomen conspicuosly elongated, legs short relatively to its body size ( Fig. 47View FIGURE 47), and femur I ‒II with ventral macrosetae ( Fig. 47DView FIGURE 47, inset).

Description. Male (Renca—AMNH). Carapace and chelicerae brownish orange ( Fig. 47AView FIGURE 47). Endites brownish yellow; labium dark brownish yellow. Sternum brownish orange with darker margins, and marbled with dark pigment ( Fig. 47BView FIGURE 47). Palps orange ( Fig. 48A ‒BView FIGURE 48). Legs orange, with pairs I ‒II darker ( Fig. 47C ‒EView FIGURE 47). Abdomen light grey, with a dark dorsal pattern comprising arrow-shaped marks, and ventral region dark ( Fig. 47A ‒BView FIGURE 47). Total length 5.52; carapace 2.96 long, 1.52 wide. Carapace elongated ( Fig. 47AView FIGURE 47), 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 ‒BView FIGURE 48). Legs: robust and coated with setae ( Fig. 47C ‒EView FIGURE 47); 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 ‒EView FIGURE 47); 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 ‒IView FIGURE 47, 48C ‒DView FIGURE 48 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 ‒DView FIGURE 48).

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. 69View FIGURE 69).


American Museum of Natural History














Ariadna changellkuk Grismado, 2008

Giroti, André Marsola & Brescovit, Antonio Domingos 2018

Ariadna changellkuk

Grismado 2008: 341