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	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.5987900
persistent identifier	https://treatment.plazi.org/id/039B87D1-FFA8-B157-169B-FC17C5DDFE75
treatment provided by	Plazi
scientific name	Ariadna changellkuk Grismado, 2008
status

Treatment

Ariadna changellkuk Grismado, 2008 View in CoL

Figures 47‒48 View FIGURE 47 View FIGURE 48 , 69 View FIGURE 69

Ariadna changellkuk Grismado, 2008: 341 View in CoL , 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 9046530 About CAS ); 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‒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 by presenting the cephalothorax and abdomen conspicuosly elongated, legs short relatively to its body size ( Fig. 47 View FIGURE 47 ), and femur I‒II with ventral macrosetae ( Fig. 47D View FIGURE 47 , inset).

Description. Male (Renca—AMNH). Carapace and chelicerae brownish orange ( Fig. 47A View FIGURE 47 ). Endites brownish yellow; labium dark brownish yellow. Sternum brownish orange with darker margins, and marbled with dark pigment ( Fig. 47B View FIGURE 47 ). Palps orange ( Fig. 48A‒B View FIGURE 48 ). Legs orange, with pairs I‒II darker ( Fig. 47C‒E View FIGURE 47 ). Abdomen light grey, with a dark dorsal pattern comprising arrow-shaped marks, and ventral region dark ( Fig. 47A‒B View FIGURE 47 ). Total length 5.52; carapace 2.96 long, 1.52 wide. Carapace elongated ( Fig. 47A View 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‒B View FIGURE 48 ). Legs: robust and coated with setae ( Fig. 47C‒E View 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‒E View 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‒I View FIGURE 47 , 48C‒D View 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‒D View 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. 69 View FIGURE 69 ).