The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae) Author Giroti, André Marsola Author Brescovit, Antonio Domingos text Zootaxa 2018 2018-03-26 4400 1 1 114 journal article 30419 10.11646/zootaxa.4400.1.1 2b7bf048-65d5-4814-bbdb-59d53d15b00e 1175-5326 1207641 59CC08B8-5B13-42EC-943E-C930D7D0DD7F Ariadna caerulea Keyserling, 1877 Figures 24‒25 , 68 Ariadne caerulea Keyserling, 1877 : 227 (Immature lectotype and lectoparatype from Bogotá [04°35'53"N; 74°04'33"W], Cundinamarca, Colombia, deposited in NHM 90.7.1.478.9, designated by Beatty (1970) , examined). Ariadna caerulea— Petrunkevitch (1911: 131) .— Bonnet (1955: 732) .— Beatty (1970: 465, figs 44‒45, 49) .— World Spider Catalog (2018) . Ariadna coerulea — Mello-Leitão (1943: 233) . Additional material examined. COLOMBIA : Magdalena Department : S side of Sierra Nevada de Santa Marta [ 10°51'59"N ; 73°42'59"W ], 8‒11,000ft ., 1♂ , IV.1938 , T.D. Cabot leg. ( MCZ 46061) ; Cundinamarca Department : Suesca [ 05°06'N ; 73°48'W ], Vivenda Santa Rosa , 2600m , 1♂ , 31.III.2010 , L. Sánches leg. (ICN-AR 4762) ; Bogotá [ 04°35'53"N ; 74°04'33"W ], 1♀ ( MNHNP-AR ) . Diagnosis. Males of Ariadna caerulea are similar to A. ubajara n. sp. due to the morphology of the palps ( Figs 25A‒B , 59F‒G ) and metatarsi I ( Figs 24C‒E , 59C‒E ), but differ by the presence of males with the mid-portion strongly bent forwards and a more tapered embolus tip ( Fig. 24C‒E ); females are similar to A. boliviana , A. isthmica and A. gaucha n. sp. due to the macrosetae pattern of tibiae I‒II, but differ from these species, except A. isthmica , by the presence of anterior receptaculum with the ventral lobe shorter than the dorsal one; it differs from A. isthmica by the presence of a ventral lobe longer and more sinuous ( Fig. 25C‒D ). FIGURE 24. Ariadna caerulea Keyserling, 1877 . Male from Suesca (ICN-Ar 4762) (A‒E): habitus, dorsal (A) and ventral view (B); right leg I, prolateral (C) and retrolateral view (D); right metatarsus I, ventral view (E). Female from Bogotá (MNHNP-AR 25233) (F‒I): habitus, dorsal (F) and ventral view (G); right leg I, prolateral (H) and retrolateral view (I). Scale bar: 1mm. FIGURE 25. Ariadna caerulea Keyserling, 1877 . Male from Suesca (ICN-Ar 4762) (A‒B): left palp, prolateral (A) and retrolateral view (B). Female from Bogotá (MNHNP-AR 25233) (C‒D): Internal genitalia, lateral view (C); Anterior receptaculum, ventral view (D). Scale bar: 1mm. Description. Male (ICN-Ar 4762). Carapace and chelicerae reddish brown ( Fig. 24A ). Endites brownish orange; labium dark brownish orange. Sternum brownish orange with darker margins, and three pairs of dark marginal areas ( Fig. 24B ). Palps light brownish orange ( Fig. 25A‒B ). Legs brownish orange, with pairs I‒II darker ( Fig. 24C‒E ). Abdomen grey, lighter ventrally ( Fig. 24A‒B ). Total length 8.2; carapace 3.8 long, 2.6 wide. Palps: tibia incrassated, with the dorso-ventral diameter similar to the bulb; bulb sub-rectangular, mid-portion shorter than the embolus and abruptly curved forwards; embolus tapered and with a tubular tip; ( Fig. 25A‒B ). Legs: slender and coated with setae ( Fig. 24C‒E ); tarsal brush of putative chemosensory setae present in legs I‒IV, reduced in pair I, and extending to the distal region of metatarsi III‒IV. Leg formula: I-II-IV-III. Leg measurements: I, femur 3.64, patella 1.32, tibia 2.8, metatarsus 3.0, tarsus 0.84, total 11.6; II, 3.4, 1.36, 2.84, 3.0, 0.84, 11.44; III, 2.44, 1.08, 1.84, 1.84, 0.76, 7.96; IV, 2.84, 1.32, 2.2, 1.92, 0.8, 9.08. Macrosetae: I, femur D0-0-1-0-0-2-0, P0-0-0-0-0-1-0; patella P1, R1-1; tibia D0-0-0-1-0-0-0, P0-1-0-1-0-1-0, vr2-0-0-0-0-0/1-1, R1-1-1-0/1-1-0; metatarsus vp1-0-0-0- 0-0-0, vr0-0-0-0-0-0-1 ( Fig. 24C‒E ); II, femur D0-1-1-0/1-0-2-0, P0-0-0-0-1/0-1-0; patella P0/1, R1; tibia P0-1-0- 1-0-1-0, vp0-0-0-0-0-0-1, vr2-0-1-0-1-1-1, R1-0-0/1-1-0-1-0; metatarsus vp1-0-0-0-0-0-0, vr1-0-0-0-0-0-1; IV, femur D1-1-1-1-1-1-1-1-0-2-0; tibia r0-0-0-0-0-1-0; metatarsus vp0-0-0-0-0-0-1/2, vr metatarsal comb with 3-4 macrosetae, r0-0-1/0-0-0-0-0. Female (MNHNP-AR 25233). Carapace brownish orange. Chelicerae reddish orange, darker than the carapace ( Fig. 24F ). Endites brownish orange; labium dark brownish orange. Sternum brownish orange with darker margins ( Fig. 24G ). Palps reddish orange, darkening gradually in distal direction. Legs orange, with pairs I‒II darker ( Fig. 24H‒I ). Abdomen as in male ( Fig. 24F‒G ). Total length 10.64; carapace 4.96 long, 2.84 wide. Carapace with wavy margins ( Fig. 24F ). Legs: robust and coated with setae; legs I‒II with ventro-prolateral and ventro-retrolateral tibial macrosetae of similar size, and metatarsal macrosetae of different sizes ( Fig. 24H‒I ). Leg formula: I-II-IV-III. Leg measurements: I, femur 3.68, patella 1.76, tibia 3.08, metatarsus 2.92, tarsus 0.84, total 12.28; II, 3.44, 1.68, 2.92, 2.8, 0.84, 11.68; III, 2.68, 1.4, 1.88, 2.0, 0.8, 8.76; IV, 3.48, 1.76, 2.8, 2.32, 0.8, 11.16. Macrosetae: I, femur d0-0-0-0-0/1-2/1-0, p0-0-0-0-2-0-0; tibia p1-0-1-0-1-0, vp1-0-1-0-1-0-1-0, vr1-0-1-0-1-0-1- 0, r0-1-0-0-1-0; metatarsus vp1-1-1-1-1-1-1-1-1-1-1-1, vr1-1-1-1-1-1-0-1-1-1-1, ( Fig. 24H‒I ); II, femur d0-0-0-0- 1-1-0, P0-0-0-0-1-1-0; tibia P0-0-1-0-1-0, vp1-0-0/1-0-1-0-1-0, vr1-0-1-0-1-0-1-0, R0-1-0-0-1-0; metatarsus vp1- 1-1-1-1-1-1-1-1-1-1, vr1-1-1-1-0-1-1-0/1-1-1-1; IV, metatarsus vp0-0-0-0-0-0-1, vr metatarsal comb with 4 macrosetae. Internal genitalia: anterior receptaculum with the glandular ducts plate extending to the proximal region of the dorsal lobe ( Fig. 25C‒D ). Variation. Male (n=2): Total length 3.84‒8.2; carapace 2.16‒3.8 long, 1.68‒2.6; femur I 2.72‒3.64. Distribution. North and center of Colombia ( Fig. 68 ).