Ariadna ubajara, Giroti & Brescovit, 2018

Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114: 93-95

publication ID 10.11646/zootaxa.4400.1.1

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scientific name

Ariadna ubajara

new species

Ariadna ubajara   new species

Figures 59 View FIGURE59 , 71 View FIGURE 71

Type-material. ♂ holotype from Parque Nacional de Ubajara , Ubajara [03°51'S; 40°55'W], Ceará, Brazil, IX ‒XI.2007, D. Loebmann leg., deposited in IBSP 89344 View Materials GoogleMaps   . Paratype, ♂ with same data as the holotype ( IBSP 166972 View Materials ). GoogleMaps  

Diagnosis. Males of Ariadna ubajara   n. sp. are similar to A. caerulea   due to the morphology of palps ( Figs 25A ‒B View FIGURE 25 , 59F ‒G View FIGURE59 ), but differ by the presence of males with a sinuous metatarsi I ( Fig. 59C ‒E View FIGURE59 ).

Etymology. The specific name is a noun in apposition taken from the type locality, Parque Nacional de Ubajara, Ubajara, Ceará, Brazil.

Description. Male (Holotype). Carapace and chelicerae dark reddish brown ( Fig. 59A View FIGURE59 ). Endites orange; labium dark orange. Sternum orange with darker margins, and three pairs of dark marginal areas, the hind one fainted ( Fig. 59B View FIGURE59 ). Palps orange ( Fig. 59F ‒G View FIGURE59 ). Legs brownish orange, pairs I ‒II darker, with the metatarsus marbled with dark pigment, and dark diffuse rings in the distal region ( Fig. 59C ‒E View FIGURE59 ). Abdomen grey, lighter ventrally, and with transversal thin clear lines dorsally ( Fig. 59A ‒B View FIGURE59 ). Total length 9.04; carapace 4.4 long, 3.12 wide. Palps: tibia incrassated, with the dorso-ventral diameter longer than the bulb; bulb sub-rectangular, midportion shorter than the embolus; embolus thickened and with a tubular tip ( Fig. 59F ‒G View FIGURE59 ). Legs: robust and coated with setae ( Fig. 59C ‒E View FIGURE59 ); tarsal brush of putative chemosensory setae present in tarsi I ‒IV, extending to the median region of the metatarsi IV, but reduced in leg I. Leg formula: I-II-IV-III. Leg measurements: I, femur 4.32, patella

1.64, tibia 3.84, metatarsus 4.12, tarsus 1.0, total 14.92; II, 4.12, 1.64, 3.88, 4.0, 0.92, 14.56; III, 3.16, 1.32, 2.36, 2.56, 0.84, 10.24; IV, 3.84, 1.6, 3.08, 2.88, 0.84, 12.24. Macrosetae: I, femur D0-0/1-1-0-1-2/1-1/2-2/1-0/1-2-0, P0- 0-0-0-0-0-0-2-0-1-0; tibia D0-0-0-0-1-1-0, P1-1-0-1-0-1-0, vp1-0-1-0-1-0-1, vr2-1-1/0-1-0-1, R1-1-0-1-1/0-1-0-1- 0; metatarsus vp0-1-0-0-0-0-1, vr0-1/0-0-0-0-0-1; II, femur D0-1-1-1-1/2-1-1/2-1-1/0-1-0, P0-0-0-0-0-0-0-1-0-1; tibia D0-0-0-0-0-1-0, P0-1-0-1-0-1-0, vp0-0-0-1/0-0-1-0-1, vr2-0-1-0-1-0-1, R1-1-0-1-1-1-0; metatarsus p0-1-0-0- 0-0-0-0, vp0-1-0-0-0-0-0-1, vr0-1-0-0-1-0-0-1, r0-1-0-0-1-0-0-0; IV, femur D1/2-2/1-1-1-1/2-1-1/0-0/1-0-0/1-0, R0-0-0-0-0-0-0-0/1-1-0-0; metatarsus vp0-0-0-0-0-0-2, vr metatarsal comb with 4 macrosetae. Female. Unknown

Variation. Male (n=2): Total length 9,04‒9,36; carapace 4.4‒4.72 long, 3.12‒3.36 wide; femur I 4.32‒4.6. Distribution. Only known from the type locality ( Fig. 71 View FIGURE 71 ).