Ariadna crassipalpa ( Blackwall, 1863 )

Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114: 29-33

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Ariadna crassipalpa ( Blackwall, 1863 )


Ariadna crassipalpa ( Blackwall, 1863) 

Figures 1CView FIGURE 1, 18‒19View FIGURE 18View FIGURE19, 72View FIGURE 72

Dysdera crassipalpus Blackwall, 1863: 43  (♂ holotype from Rio de Janeiro, Brasil, deposited in Oxford Museum of Natural History, England, not examined).— Beatty (1970: 483, as nomem dubium). Ariadna  crassipalpus— Mello-Leitão (1947: 234, Transf. from Dysdera  ).— Camargo (1950: 445, Descr. ♀, = A. mollis  , present study).

Ariadna  crassipalpa— World Spider Catalog (2018).

Note. This species was identified based on the original description from Blackwall (1863). The alotype described by Camargo (1950) was examined, and after the study of the internal genitalia it was observed that it represents a misidentification of an Ariadna mollis  specimen.

Additional material examined: BRASIL: São Paulo State: Piracaia [23°03'14''S; 46°21'28"W], 2♀, 18.III.1991, S.C. de Castro leg. ( IBSP 4206View Materials)GoogleMaps  ; São Paulo, Parque Estadual do Jaraguá [23°27'34.3''S; 46°46'02.8''W], 1♂, 3.III.2011, R.P. Indicatti leg. ( IBSP 166962View Materials)GoogleMaps  ; Mogi das Cruzes [23°31'22"S; 46°11'16"W], Parque Natural Municipal da Serra do Itapety , 1♂, 2003, Exp. Biota leg. ( IBSP 54640View Materials)GoogleMaps  ; Mogi das Cruzes [23°31'22''S; 46°11'16''W], 1♀, V.1977, C.T.S. Filho leg. ( MZSP 10431View Materials)GoogleMaps  ; São Paulo [23°32'52"S; 46°38'09"W], 1♂, 17.V.2006, N. Carvalho leg. ( IBSP 72613View Materials)GoogleMaps  ; Salesópolis [23°37'51"S; 45°52'11"W], Estação Ecológica de Boracéia , 1♀, VII.2005, A.D. Brescovit et al. leg. ( IBSP 55304View Materials)GoogleMaps  ; Cotia, Caucaia do Alto, Reserva Florestal do Morro Grande [23°40'S; 47°01'W], 1♀, 13‒30.VI.2002, A.A. Nogueira et al. leg. ( IBSP 118014View Materials)GoogleMaps  ; Itanhaém, Ilha da Queimada Grande [24°29'08.5''S; 46°40'31.22''W], 1♀, 20.III.1995, E. Butantan leg. ( IBSP 10034View Materials)GoogleMaps  ; Rio de Janeiro State: Teresópolis, Parque Nacional da Serra dos Órgãos (22°27'23.4''S; 42°59'41.4''W), 1♀, 22‒25.I.2011, G.H.F. Azevedo et al. leg. ( UFMG 10200View Materials)GoogleMaps  ; Itatiaia, Parque Nacional do Itatiaia, Maromba , Cachoeira Véu de Noiva (22°25'41.1''S; 44°36'40''W), 4♀, 18.IV.2014, A. Benedetti & J. Cabra-García leg. ( IBSP 166965View Materials)GoogleMaps  ; Itatiaia [22°29'29"S; 44°33'33"W], Parque Nacional do Itatiaia , 1100m, 1♀ 1imm., 20‒30.V.2013, R.P. Indicatti et al. leg. ( IBSP 166963View Materials)GoogleMaps  ; same locality, 2450m, 3♀ 1imm., 16‒28.VII.2013, R.P. Indicatti & B. Gambaré leg. ( IBSP 166964View Materials)GoogleMaps  ; Petrópolis [22°30'18''S; 43°10'44''W], 1♀, I.1982, M. Maluf leg. ( IBSP 4941View Materials)GoogleMaps  ; Rio de Janeiro, Parque Estadual da Pedra Branca [22°56'26''S; 43°28'50''W], 300m, 1♀, 3.XII.1939, Schubart leg. ( MNRJ 2063View Materials)GoogleMaps  ; Santa Catarina State: Chapecó [27°13'S; 52°33'W], Lageado Monte Alegre , 1♂, 2001‒2002, J.M. Marques leg. ( IBSP 93752View Materials)GoogleMaps  ; Reserva Biológica do Arvoredo [27°17'57''S; 48°21'23''W], 3♀, 5‒6.X.1995, A.A. Lise et al. leg. ( MCTP 7486View Materials)GoogleMaps  ; Florianópolis [27°35'49"S; 48°32'56"W], Lagoa do Perí , 1♀, 2012, A.L. Trivia & A. Chagas leg. ( IBSP 166966View Materials)GoogleMaps  ; Rio Grande do Sul State: Guaporé [28°50'45"S; 51°53'24"W], 1♂, 1.VI.1991, M.D. Bernard leg. ( MCTP 0970View Materials)GoogleMaps  ; Caxias do Sul [29°10'04"S; 51°10'44"W], Bairro Centenário , 1♀, 31.II.2012, R.P. Indicatti leg. ( IBSP 166968View Materials)GoogleMaps  ; Cambará do Sul, Área de Preservação Ambiental Celulose Cambará [29°02'52''S; 50°08'42''W], 2♀ 4imm., 19‒21.XII.1994, A.B. Bonaldo leg. ( MCN 25977View Materials)GoogleMaps  ; Cambará do Sul, Parque Nacional Aparados da Serra [29°11'30"S; 50°05'51"W], 1♂ 1♀ 2imm., 20‒24.VII.2012, R.P. Indicatti & B. Gambaré leg. ( IBSP 166967View Materials)GoogleMaps  ; 1♀, 2‒10.I.2013, R.P. Indicatti leg. (IBSP 166969); Garibaldi [29°15'21''S; 51°32'02''W], 1♀, 20.VII.1974, O. Simonaggio leg. ( MCN 2400View Materials)GoogleMaps  ; Canela, Cascata do Caracol [29°21'57"S; 50°48'57"W], 1♀, 7.X.1967, A.A. Lise leg. ( MCN 11762View Materials)GoogleMaps  ; 13♀ 10imm., 19. II.1 966 (MCN 11763); Canela [29°21'57"S; 50°48'57"W], 1♂, 3.VII.1965, A.A. Lise leg. ( MCN 3846View Materials)GoogleMaps  ; 30♀ 27imm., 3.II.1967 (MCN 0551; 0552; 01460); 8♀ 10imm., 20.XII.1966 (MCN 0712); Gramado [29°22'44"S; 50°52'26"W], 1♀, 7.IV.2007, A.A. Lise leg. ( MCTP 20337View Materials)GoogleMaps  ; 1♀ 1imm., 20.IV.2008, A.A. Lise leg. (MCTP 20462); Capão da Canoa [29°45'39"S; 50°1'48"W], 9♀ 23imm., 9.VII.1963, C.A. Hartlieb leg. ( MCN 1345View Materials)GoogleMaps  ; Porto Alegre [30°01'58"S; 51°13'48"W], 1♀, IV.1985, R. Baião leg. ( MCN 14400View Materials)GoogleMaps  ; 2♂, 19.V.1973, S.L. Cardoso leg. (MCN 3577); Retiro Ponta Grossa , 1♀, XI.2003 ( MCN 37024View Materials)  ; Guaíba [30°06'50''S; 51°19'30''W], Sertão Santana , 1♀, 19.IX.1976, H. Bischoff leg. ( MCN 4443View Materials)GoogleMaps  ; Palmares do Sul [30°15'28"S; 50°30'36"W], Lagoa do Capivari , 1♂, 20.V.2004, E. Probio leg. ( MCN 37391View Materials)GoogleMaps  ; Encruzilhada do Sul [30°32'38''S; 52°31'19''W], 2♀, 7.IX.1990, M.A. Pavanato leg. ( IBSP 209942View Materials)GoogleMaps  .

Diagnosis. Ariadna crassipalpa  is similar to A. mollis  , A. boesenbergi  , A. calilegua  , A. changellkuk  , 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, except A. mollis  and A. calilegua  , by the presence of males with sinuous metatarsi I, bearing a short and curved ventro-prolateral macrosetae in its median region, sometimes in a small apophysis ( Fig. 18C ‒EView FIGURE 18); it differs from A. mollis  by presenting a more incrassated palpal tibia, with the dorsoventral diameter similar to the bulb, and from A. calilegua  by having the curvature of the mid-portion and embolus less marked, and a thicker embolus ( Fig. 19A ‒BView FIGURE19); females differ from these species, except A. calilegua  , by having the anterior receptaculum with an irregular cuticle, with conspicuous grooves ( Fig. 19C ‒DView FIGURE19); it differs from A. calilegua  by the patellae I ‒II without prolateral macrosetae ( Fig. 18HView FIGURE 18).

Description. Male ( MCN 3577): Carapace and chelicerae brownish orange ( Fig. 18AView FIGURE 18). Endites orange; labium dark orange. Sternum orange, with darker margins, and marbled with dark pigment ( Fig. 18BView FIGURE 18). Palps light orange ( Fig. 19A ‒BView FIGURE19). Legs orange, with pairs I ‒II darker, and dark pigment forming diffuse rings in the distal region of tibia and metatarsus ( Fig. 18C ‒EView FIGURE 18). Abdomen whitish grey, with a conspicuous dark dorsal pattern comprising arrow-shaped marks, and anterior ventral region dark ( Fig. 18A ‒BView FIGURE 18). Total length: 7.28; carapace 3.92 long, 2.72 wide. Chelicerae projected ( Fig. 18AView FIGURE 18). Palps: tibia incrassated, with the dorso-ventral diameter similar to the bulb; bulb sub-rectangular, mid portion slightly shorter than the embolus; embolus curved and thickened, with a twisted tip ( Fig. 19A ‒BView FIGURE19). Legs: robust and coated with setae ( Fig. 18C ‒EView FIGURE 18); tarsal brush of putative chemosensory setae present in legs II ‒IV. Leg formula: I-II-IV-III. Leg measurements: I femur 3.84, patella 1.56, tibia 3.16, metatarsus 3.48, tarsus 0.72, total 12.76; II 3.48, 1.48, 3.08, 3.24, 0.76, 12.04; III 2.68, 1.2, 1.8, 2.16, 0.72, 8.56; IV 3.04, 1.4, 2.2, 2.24, 0.68, 9.56. Macrosetae: I, femur D0-0-0-0-1-0-2-0, P0-0-0-0-1-1-0-0; patella P0-0-1; tibia P0/ 1-1-0-1-0-1-0, vp2-0-0-0-0-0-1, vr2-0-1-0-1/2-0-1, R1-1-0-1-0-1-0; metatarsus vp1/0-0-0-1(claw-shaped, curved shaft with pointed tip)-0-0-1, vr1/0-0-0-1-0-0-1 ( Fig. 18C ‒EView FIGURE 18); II, femur D0-0-0-0-0-0-2-0, P0-0-0-0-0-1-1-0; patella P0-0-1; tibia P0-1-0-1-0-1-0, vp0-0-1-0-1-0-1, vr2-0-1-0-1-0-1, R1-1-0-1-0-1-0; metatarsus vp1-0-0-1-0-0- 1, vr1-0-0-1-0-0-1, r0-1-0-0-0-1-0; IV, femur D1-1-0-1-0-1-0-1-0; metatarsus, vp0-1/0-0-0-1-0-1, vr metatarsal comb with 6 macrosetae.

Female ( MCN 0551). Carapace and chelicerae reddish orange ( Fig. 18FView FIGURE 18). Endites reddish orange; labium dark reddish orange. Sternum reddish orange, with darker margins, and marbled with dark pigment ( Fig. 18GView FIGURE 18). Palps reddish orange, darkening gradually in distal direction. Legs reddish orange, with pairs I ‒II darker and dark pigment distributed in femur, patellae and tibiae, and forming rings in the distal region of metatarsi ( Fig. 18H ‒IView FIGURE 18). Abdomen as in male ( Fig. 18F ‒GView FIGURE 18). Total length: 14.48; carapace 6.92 long, 4.4 wide. Carapace with cephalic region elevated. Chelicerae not projected ( Fig. 18FView FIGURE 18). Legs: robust and densely coated with setae, mainly on the ventral region of pairs I ‒III; legs I ‒II with ventro-prolateral and ventro-retrolateral tibial macrosetae of similar size, and metatarsal macrosetae of different sizes ( Fig. 18H ‒IView FIGURE 18). Leg formula: I-II-IV-III. Leg measurements: I femur 4.92, patella 2.48, tibia 3.68, metatarsus 3.64, tarsus 0.92, total 15.64; II 4.4, 2.4, 3.76, 3.56, 0.92, 15.04; III 3.68, 1.84, 2.6, 2.68, 0.92, 11.72; IV 4.2, 2.4, 3.44, 2.88, 0.96, 13.88. Macrosetae: I, femur D0-0-0-0-0-2-0, P0-0-0-0-2- 1-0; tibia P0-1-0-1-0-1-0, vp1-0-1-0-1-0-1, vr1-0-1-0-1-0-1, R0-1-0-0-0-0-0; metatarsus vp1-1-1-1-1-1-1-1-1-1, vr1-1-0/1-1-1-1-1-1-0/1-1-1 ( Fig. 18H ‒IView FIGURE 18); II, femur D0-0-0-0-0-2-0, P0-0-0-0-1-1-0; patella P0-1-0; tibia P0-1-0- 1-0-1-0, vp0-0-1-0-1-0-1, vr1-0-1-0-1-0-1; metatarsus vp1-1-1-1-1-1-1-1-1-1-1-1, vr1-1-1-0-1-0-1-1-1-1-0/1-1; IV, metatarsus vp0-0-0-0-0-0-1, vr metatarsal comb with 5 macrosetae. Internal genitalia: anterior receptaculum with lobes of similar size and glandular ducts plate located in the median region ( Fig. 19C ‒DView FIGURE19).

Variation. Male (n=10): Total length: 5.84‒8.72; carapace 3.2‒4.6 long, 2.32‒3.04 wide; femur I 3.24‒4.72. Female (n=10): Total length: 10.96‒14.8; carapace 5.36‒6.92 long, 3.44‒4.4 wide; femur I 3.68‒4.92.

Distribution. South and southeast of Brazil ( Fig. 72View FIGURE 72).


McNeese State University














Ariadna crassipalpa ( Blackwall, 1863 )

Giroti, André Marsola & Brescovit, Antonio Domingos 2018

Dysdera crassipalpus

Blackwall 1863: 43


Audouin 1826


Audouin 1826


Latreille 1804