Ariadna comata, O. Pickard-Cambridge, 1898

Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114 : 48-51

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.5987878
persistent identifier	https://treatment.plazi.org/id/039B87D1-FFCB-B128-169B-F99FC46BFBB5
treatment provided by	Plazi
scientific name	Ariadna comata
status	sp. reval.

Treatment

Ariadna comata View in CoL O. P.- Cambridge, 1898 sp. reval.

Figures 1D View FIGURE 1 , 29‒30 View FIGURE 29 View FIGURE 30 , 67 View FIGURE67

Ariadne comata O. P.- Cambridge, 1898: 235, pl. 30, fig. 8 (♀ holotype from Orizaba [18°51'N; 97°06'W], Vera Cruz, Mexico, Godman & Salvin leg., deposited in NHM 1901.3.3.77, examined).—F. O. P.- Cambridge (1899: 32).— Petrunkevitch (1911: 131).— Bonnet (1955: 732).— Beatty (1970: 461, Syn. with A. pilifera View in CoL ).

Note. The revalidation of this species is based on the examination of the holotype, and also non-type specimens near the type locality.

Additional material examined. MEXICO: Puebla State: Puebla, Villa Juaréz [19°03'06.4"N; 98°13'37.6"W], 1♀, 23.X.1951 (CNAN-Ar 007980) GoogleMaps ; Veracruz State: San Andrés Tuxtla, Estación de Biología Los Tuxtlas (18º35'11.2" N; 95º04'30.5"W), 9♀, 28‒31.VII.2014, A.M. Giroti et al. leg. ( IBSP 209944-209952 View Materials ); Cueva de Ruiz Cortinez ; entorno; 1067m (18º32'39.2" N; 95º08'36.1"W), 1♀, 28.VII.2014, A.M. Giroti et al. leg. ( IBSP 209953 View Materials ) GoogleMaps ; Chiapas State: 3km SE Custepec ; 1740m; secondary mesophil forest [15°42'51,9''N; 92°56'16,5''W], 1♂, 17.V.2008 ( MCZ 80543) GoogleMaps .

Diagnosis. Ariadna comata is similar to A. bicolor , A. pilifera and A. weaveri due to the morphology of the male palp ( Figs 13A‒B View FIGURE 13 , 28A‒B View FIGURE 28 , 42A‒B View FIGURE 42 ) and macrosetae pattern of the tibia II of females, but males differ by the presence of metatarsi I with two conspicuous lateral conical apophyses, one on each side, bearing one macrosetae in the base of the retrolateral, and one blunt macroseta (i.e. globous shaft with rounded tip) on the prolateral one ( Fig. 29C‒E View FIGURE 29 ); females differ from A. bicolor by the presence of a dorsal lobe shorter than the ventral lobe, from A. weaveri by the expanded ventral lobe and smaller glandular ducts plate, and from A. pilifera by the ventral lobe longer and more sinuous ( Fig. 30C‒D View FIGURE 30 ).

Description. Male (MCZ 80543). Carapace and chelicerae dark brownish yellow ( Fig. 29A View FIGURE 29 ). Endites brownish yellow; labium dark brownish yellow. Sternum brownish yellow with darker margins, and marbled with darker pigment ( Fig. 29B View FIGURE 29 ). Palps light brownish yellow ( Fig. 30A‒B View FIGURE 30 ). Legs brownish yellow with pairs I‒II darker ( Fig. 29C‒E View FIGURE 29 ). Abdomen grey, lighter ventrally ( Fig. 29A‒B View FIGURE 29 ). Total length 6.24; carapace 3.12 long, 2.2 wide. Chelicerae not projected ( Fig. 29A View FIGURE 29 ). Palps: tibia slightly incrassated, with the dorso-ventral diameter about the same as half of the bulb; bulb sub-rectangular, mid-portion and embolus of equal lengths; embolus tubular, curved and tapered ( Fig. 30A‒B View FIGURE 30 ). Legs: robust and sparsely coated with setae ( Fig. 29C‒E View FIGURE 29 ); tibia I with two distal ventroretrolateral macrosetae lanceolated ( Fig. 29D View FIGURE 29 ); tarsal brush of putative chemosensory setae present on legs I‒IV, but reduced in pair I. Leg formula: I-II-IV-III. Leg measurements: I, femur 3.12, patella 1.16, tibia 2.4, metatarsus 2.32, tarsus 0.96, total 9.96; II, 2.88, 1.16, 2.48, 2.48, 0.88, 9.88; III, 2.08, 0.88, 1.52, 1.56, 0.68, 6.72; IV, 2.44, 1.12, 1.96, 1.72, 0.72, 7.96. Macrosetae: I, femur D0-0-0-0-0-0/1-2, P0-0-0-0-0-1-1; tibia p0-1-0-1-0-1-0, vp0, vr1- 0-0-1-0-0-1, r0-1-0-1-0-1-1(lanceolated); metatarsus vp1-0-0-0-0-0-1, vr0-0-1(blunt)-0-0-0-1 ( Fig. 29C‒E View FIGURE 29 ); II, femur D0-0-0-0-0-0-2, p0-0-0-0-0-1-1; tibia P0-0-1-0-0-1-0, vp0-0-0-0-0-0-1, vr1-0-1-0-1-0-1; metatarsus vp1-0- 0-1-0-0-1, vr1-0-0-1-0-0-1; IV, femur D1-1-1-0-0-0-0; metatarsus vp0-1-0-0-0-0-1, vr metatarsal comb with 3 macrosetae.

Female (IBSP 209953). Carapace and chelicerae brownish orange, with cephalic region and chelicerae darker ( Fig. 29F View FIGURE 29 ). Endites brownish orange; labium dark brownish orange. Sternum orange with darker margins, and three pairs of dark marginal areas, the hind one fainted ( Fig. 29G View FIGURE 29 ). Palps brownish orange, gradually darkening in distal direction. Legs brownish orange with pairs I‒II darker ( Fig. 29H‒I View FIGURE 29 ). Abdomen grey, lighter laterally and ventrally ( Fig. 29F‒G View FIGURE 29 ). Total length 10.08; carapace 4.24 long, 2.56 wide. Legs: robust and densely coated with setae; legs I‒II with ventro-prolateral and ventro-retrolateral tibial macrosetae of similar size, and metatarsal macrosetae of different size ( Fig. 29H‒I View FIGURE 29 ). Leg formula: I-II-IV-III. Leg measurements: I, femur 3.0, patella 1.28, tibia 2.32, metatarsus 2.08, tarsus 0.72, total 9.4; II, 2.8, 1.28, 2.4, 2.16, 0.72, 9.36; III, 2.24, 1.12, 1.56, 1.56, 0.64, 7.12; IV, 2.64, 1.44, 2.08, 1.76, 0.68, 8.6. Macrosetae: I, femur D0-0-0-0-0-0-2, P0-0-0-0-1-1/2-1; tibia P0-1-0-1-0-1-0, vp1- 0-1-0-1-0-1, vr1-0-1-0-1-0-1, R0-0-1-0-1-0-0; metatarsus vp1-1-1-1-1/0-1-1-1, vr1-1-1-1-0-1-1-1 ( Fig. 29H‒I View FIGURE 29 ); II, D0-0-0-0-0-0-2, P0-0-0-0-0-1-1; tibia P0-1-0-1-0-1-0, vp0-0-0-0-0-0-1, vr1-0-1-0-1-0-1; metatarsus vp1-1-1-1-1- 1-1-1, vr1-1-1-1-1-1-1-1; IV, D1-0-1-0-0-0-0, R0-0-0-0-0-0-1; tibia vr0-0-0-0-0-0-1; metatarsus vp0-1-0-0-0-1, vr metatarsal comb with 4 macrosetae. Internal genitalia: anterior receptaculum with the glandular ducts plate in the median region ( Fig. 30C‒D View FIGURE 30 ).