Ariadna boliviana Simon, 1907

Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114 : 59-62

Ariadna boliviana Simon, 1907

Figures 3‒5 , 7‒8 , 10 , 36‒37 , 71

Ariadna boliviana Simon, 1907: 262 (♀ lectotype and ♂ lectoparatype from Espíritu Santo, [16°55'S; 67°48'W], BoliVia, Garlepp leg., deposited in MNHNP-AR 14382 and 14383, respectively, designated by Beatty (1970), examined).— Petrunkevitch (1911: 130).— Beatty (1970: 477, figs 4, 6, 14, 51‒52, 54‒55).— World Spider Catalog (2018).

Ariadna dubia Mello-Leitão, 1917: 82 (♀ holotype from Pinheiro (actually Piraí, Pinheiral [22°30'46"S, 44°00'03"W], Rio de Janeiro, Brazil, E. Brito leg., should be deposited in MNRJ 1452, lost).— Beatty (1970: 483, as nomem dubium).— Moreira et al. (2010: 61).— NEW SYNONYMY.

Synonymy. Mello-Leitão (1917) described A. dubia based in a dried and pinned specimen, with a deformed and seared abdomen. Beatty (1970), due to the unavailability of the holotype and the poor description of Mello-Leitão, treated it as nomem dubium. There are two species registered to the type-locality of A. dubia : Ariadna boliviana Simon, 1907 and Ariadna obscura ( Blackwall, 1858) . According to the macrosetae pattern presented by Mello-Leitão (1917) in A. dubia 's original description, the tibiae I‒II presents 2-2-2-2 pattern (vp1-0-1-0-1-0-1, vr1-0-1-0-1-0-1) and metatarsi I and II with seven pairs of macrosetae. This macrosetae pattern is consistent with the one from A. boliviana , and differs from A. obscura . Based in the characters presented by Mello-Leitão (1917), A. dubia is considered junior-synonymy of A. boliviana .

Additional material examined: SURINAME: Sipaliwini District: Upper Kaburi Creek [03°46'37"N; 56°01'40"W], 1♀, IX.1977, J.E.D. Milner leg. ( NHM) ; BRAZIL: Pará State: Parauapebas, Gruta NIN8 N1-174 (6°01'28.5"S; 50°17'55.0"W), 4♀, 17.VII‒4.VIII.2014, Carste et al. leg. ( IBSP 193496‒193499 ) ; Gruta NIN8 N1- 174 (6°01'29.1"S; 50°17'54.5"W), 2♀, 7‒28.I.2015, Carste et al. leg. ( IBSP 193502 ; 193503); Gruta NIN8 N1- 0 223 (6°01'39.8"S; 50°16'33.2"W), 1♀, 4.IX‒6.X.2014, Carste et al. leg. ( IBSP 193501 ) ; Parauapebas, Gruta GEM-1786 (6°06'19"S; 50°08'21"W), 1♀1imm., 27.VIII.2010, R. A. Zampaulo leg. ( ISLA); Gruta GEM-1623 (6°07'06"S; 50°07'56"W), 1imm., 16.III.2011, M . P. Oliveira leg. ( ISLA); Gruta GEM-1764 (6°07'58"S; 50°08'14"W), 1♀, 25.X.2010, M . P. Oliveira leg. ( ISLA); Gruta GEM-1715 (6°07'59"S; 50°08'06"W), 1imm., 4.V.2011, M . P. Oliveira leg. ( ISLA); Gruta GEM-1739, 1♀ 1imm., 5.V.2011, M . P. Oliveira leg. ( ISLA); Gruta GEM-1739, 1♀ 1imm., 31.X.2010, M . P. Oliveira leg. ( ISLA); Gruta GEM-1799, 1♀ 1imm., 5.V.2011, M . P. Oliveira leg. ( ISLA); 2♀ 2imm., 31.X.2010, R . A. Zampaulo leg. ( ISLA); Carajás, Floresta Nacional de Carajás, Gruta N4E32 (6°02'25"S; 50°09'43"W), 1♀, 8‒12.II.2007, R. Andrade et al. leg. ( IBSP 97751 ) ; Gruta N4WS80 (6°04'34.4"S; 50°11'27.9"W), 1♀, 18.XI‒1.XII.2010 ( IBSP 174229 ) ; Gruta N5S02 (6°05'33"S; 50°07'35"W), 1♀, 3‒13.V.2005, Andrade & Arnoni leg. ( IBSP 55777 ) ; Gruta N5S-12 (06°06'11''S; 50°07'31''W), 1♀, 14‒23.X.2009, R. Andrade & I. Cizauskas leg. ( IBSP 174230 ) ; Gruta N5S53/53 (6°06'28.3"S; 50°08'01.5"W), 1♀, 25.VIII‒3.IX.2009, R. Andrade et al. leg. ( IBSP 193494 ) ; Gruta NIN8 N8-031 (6°09'54.0"S; 50°09'30.0"W), 1♀, 17.VII‒4.VIII.2014, Carste et al. leg. ( IBSP 193500 ) ; Gruta N4E31 (6°05'33"S; 50°07'35"W), 1♀ ( IBSP 97752 ) ; Gruta CRIS-10 (6°26'56.4"S; 49°41'08.6"W), 1♀, 29.VII‒6.VIII.2008, R. Andrade et al. leg. ( IBSP 174570 ) ; Novo Progresso, Serra do Cachimbo, Campo de Provas Brigadeiro Velloso (09°21'89"S; 55°02'01"W), 1♀, 11.IX.2003, D.R. Santos-Souza leg. ( MPEG 6243 ) ; without specific data, 1♀, Mth. (MNHNP-AR); Maranhão State: Caxias, Reserva Ecológica Inhamum (04°53'56"S; 43°26'10"W), 2♂, 16‒19.I.2006, G. A . Cunha leg. (IBSP 122448); 1♂, 12‒15.VII.2006, G.A. Cunha leg. (IBSP 122449); 1♂, 2006, F. Limeira leg. (IBSP 122450); Piauí State: Teresina [05°05'20"S; 42°48'07"W], Sítio do Carlos Brasil , 1♀, 15.V.2004, L.S. Carvalho leg. ( MPEG 5320 ) ; Areias, Parque Estadual Mata do Pau Ferro (06°58'38,6"S; 35°42'25"W), 1♂, 26‒30. IX.2011, E. Araújo & A. Medeiros leg. (CHNUFPI 0285) ; Pernambuco State: Tapera [09°25'38"S; 40°44'15"W], 1♀, 1.III.1972, P.F.L. Duarte leg. ( MCN 25804) ; Sergipe State: Itabaiana, Parque Nacional da Serra de Itabaiana , 161m (10°47'02.9''S; 37°20'09.5''W), 1♀, 20.V.2012, I.L.F. Magalhães & J.L. Chavari leg. ( IBSP 166856 ) ; Mato Grosso State: Cotriguaçu, Fazenda São Nicolau (09°50'24"S; 58°14'54"W), 1♂ 1♀, 2‒14.X.2010, A.J. Santos leg. ( UFMG 7743 ; 7744) ; Miracema do Norte [09°34'01"S; 48°23'31"W], 1♀ 1imm., 17‒25.IV.2005, I. Knysak & R. Martins leg. ( IBSP 124516 ) ; Porto Nacional, Capivara [10°09'44"S; 48°31'07"W], 1♀, 21.IX.2000, I. Knysak & R. Martins leg. (IBSP 124057); Porto Nacional [10°42'28"S; 48°25'01"W], Fazenda Sandoval, Cerrado, 1♀, 19.IX.2002, R. Martins & I. Knysak leg. ( IBSP 123806 ) ; Palmas [10°11'04"S; 48°20'01"W], 1♀, 30.IX.2001, E. Butantan leg. ( IBSP 37797 ) ; Querência, Fazenda Tanque (13°04'43''S; 52°23'26''W), 1♀, I.2014, R.B. Almeida leg. (IBSP 169568); Sapezal [13°32'33"S; 58°48'51"W], Utiariti , 1♀, 1961, K. Lenko leg. ( MZSP 3583 ) ; Vale de São Domingos / Pontes de Lacerda, Usina Hidrelétrica de Guaporé [15°07'S; 58°58'W], 1♀, X.1999, E. Resgate leg. ( IBSP 41650 ) ; Cuiabá, Gruta Kiogo Brado (15°37'1.94"S; 55°30'16.61"W), 1♀ 2imm., 27 October 2006, R.L. Ferreira leg. ( ISLA) ; Tocantins State: Palmas, Gruta da Boa Esperança (10°22'55.3"S; 48°03'35.2"W), 2♀, 2.XII.2004, R . L. Ferreira leg. ( ISLA); Goiás State: São Domingos [13°23'52"S; 46°19'04"W], Parque Estadual de Terra Ronca, Cavernas Passa Três , 1♀, 3‒5.IX.2000, F . P. Franco leg. ( IBSP 26082 ); Minaçu, Usina Hidrelétrica Serra da Mesa [13°50'01"S; 48°18'10"W], 2♂ 3imm., 18‒30.XI.1996, A . B. Bonaldo & L. Moura leg. ( MCN 27861); São Jorge, Parque Nacional da Chapada dos Veadeiros [14°10'S; 47°30'W], 1♀, 30.X.2009, P .C. Motta leg. (DZUB 5379); Cocalzinho de Goiás [15°47'38"S; 48°46'33"W], RPPN, 1♂ 1imm., 2008, I.P. Rocha leg. ( DZUB 5965 ) ; Morrinhos [17°43'55"S; 49°06'03"W], Fazenda Recanto do Jatobá, 2♂, 2009, W.C.R. Pinto leg. ( IBSP 152775 ; 152777); Jataí [17°52'51"S; 51°42'50"W], 2♀, 20.IX.2005, P . C. Motta leg. ( DZUB 3880 ); Catalão, Barragem para Aproveitamento Hidrelétrico Serra do Facão (18°03'20,07"S; 47°37'55,63"W), 1♀, VII.2010, R . B. Martines & R.M.C. Silveira leg. ( UFMG 4526 ); Catalão [18°10'12"S; 47°56'31"W], 1♂, 20.X.2001, P . C. Motta, F.S.P. Godói & D. Diniz leg. ( DZUB 2530 ); Bahia State: Porto Seguro, Parque Nacional do Monte Pascoal (16°47'31"S; 39°28'30"W), 1♀, 21‒23.IV.1998, A . D. Brescovit et al. leg. ( IBSP 18438 ); Mato Grosso do Sul State: Corumbá [19°00'32"S; 57°39'10"W], Serra do Urucum , 1♀, 27.XI.1960, K . Lenko & C. Carvalho leg. ( MZSP 11564 ); Paranaíba [19°40'37"S; 51°11'27"W], 1♂, XI.1983, R .R. da Silva leg. (IBSP 3768); 1♀, I.1983 (IBSP 4141); 1♀, 7.VI.1983 (IBSP 14084); Dois Irmãos do Buriti [20°27'S; 55°30'W], Piraputanga , 1♀, 31.VI‒6.VII.1999, A. D. Brescovit et al. leg. ( IBSP 98896 ) ; Três Lagoas [20°45'04"S; 51°40'42"W], 1♀, VI.1964, C.D. Z. leg. ( MZSP 3616 ) ; 1♀, X.1964, Exp. O.Z. leg. (MZSP 3766); Três Lagoas, Horto Barra da Moeda (20°58'S; 51°47'W), 1♂, XI.2007, M. Uehara-Prado leg. ( UFMG 3202 ) ; Santa Rita do Rio Pardo [21°18'10"S; 52°49'51"W], 1♀, 23.IV.2001, R. Bertani & E.K. Kashimata leg. ( IBSP 39480 ) ; Minas Gerais State: Januária, Parque Nacional do Peruaçu , 550m (15°08'45''S; 44°14'28.6''W), 1♀, 15.IV.2015, L . S. Carvalho leg. (CHNUFPI 1516); Itacarambi, Distrito de Fabião II (15°10'19"S; 44°10'49"W), 1♂, 17‒22.X.2010, G.F.B.P. Ferreira et al. leg. ( UFMG 9357 ) ; Águas Vermelhas [15°44'49"S; 41°27'36"W], 1♂, III.1985, V. Palmeira leg. ( MNRJ 6 415) ; Diamantina, Minas de Serrinha [18°14'56"S; 43°36'00"W], 1♂, 1945, E. Cohn leg. ( AMNH) ; Morro do Pilar, Lageado (19°13'47,28''S; 43°22'59,76''W), 7♀ 1imm., 13‒14.XI.2013, P.H. Martins et al. leg. ( UFMG 14361 ) ; Sete Lagoas, Gruta do Chisé [19°27'57"S; 44°14'49"W], 1♀, 25.II.2009 ( IBSP 149911 ) ; Sete Lagoas, Entorno da Gruta da Lapinha (19°33'S; 43°57'W), 1♀, 23.VI.2001, R.L.C. Baptista leg. ( MNRJ 6186 ) ; Matozinhos, Gruta MOC113 (19°33'19.3"S; 50°01'15.0"W), 1♀, 1‒8.VIII.2011, F. Franco leg. ( IBSP 19 3495); Timóteo, Parque Estadual do Rio Doce (19°39'28.3"S; 42°34'22.5"W), 2♂, 19.XI.2010, B . T. Faleiro leg. ( UFMG 10501 ); Timóteo, Parque Estadual do Rio Doce (19°39'30,1"S; 42°34'25,2"W), 1♂, 19.XI.2010, B . T. Faleiro leg. ( UFMG 10488 ); Parque Estadual do Rio Doce (19°39'30,6"S; 42°34'28,2"W), 1♂, 19.XI.2010, B . T. Faleiro leg. ( UFMG 10476 ); Parque Estadual do Rio Doce (19°39'30,7"S; 42°34'32,2"W), 2♂, 17.XII.2010, B . T. Faleiro leg. ( UFMG 10457 ); Marliéria, Parque Estadual do Rio Doce (19°42'58,62''S; 42°44'01,69''W), 2♂, 2‒9 November 2000, D .P. Araújo leg. (UFMG 14338); Caeté, Serra da Piedade [19°49'23.3"S; 43°41'02.4"W], 1♀, 16.XII.2012, Oliveira leg. ( IBSP 209936 ) ; Santa Bárbara [19°57'32"S; 43°24'54"W], Reserva Florestal Peti , 1♂ 1♀, 14.VIII.1986, R.L.C. Baptista leg. ( MNRJ 6407 ) ; Catas Altas [20°04'30"S; 43°24'28"W], Serra do Caraça , 1♀, 12‒23.XI.1961, U. Martins-Lenko & R. Kloss leg. ( MZSP 6687 ) ; Catas Altas, RPPN Parque Natural do Caraça (20°05'51"S; 43°29'18"W), 1♀, 2011 ( UFMG 10368 ) ; Mariana, Mina da Alegria [20°10'31.3"S; 43°29'37.4"W], Caverna 0 2, 1♀, 16‒17.IV.2009, R. Bessi et al. leg. ( IBSP 149763 ) ; Ouro Preto (20°13'S; 43°30'W), 1♀, 1.III.2015, H.C. Costa leg. (CHNUFPI 1570) ; Espírito Santo State: Linhares, Floresta Nacional de Goytacazes (19°26'07"S; 40°04'32"W), 1♀, 26.X.2005, T. Souza et al. leg. ( IBSP 134971 ) ; Santa Teresa, Reserva Biológica Augusto Ruschi [19°54'20"S; 40°33'44''W], 1♀, VI‒VIII.2006, T. Souza, T. Barnabé & E. Soveiro leg. (IBSP 121566); São Paulo State: Luís Antônio, Estação Ecológica de Jataí [21°37'03''S; 47°45'55''W], 5♂ 1♀, 3‒7.X.2009, A.G. Cristovão leg. ( IBSP 166947‒166951 ) ; 1♀, 6‒12.XI.2009, A.G. Cristovão leg. (IBSP 166946); Tabatinga [21°47'05"S; 48°38'09"W], Mata Sagrada , 1♀, 27.VIII.1965, K. Lenko leg. ( MZSP 1 1565) ; Araraquara, Jardin Nova América [21°47'38"S; 48°10'33"W], 1♀, XII.2010, S.C.F.S.A. leg. (IBSP 209935); Assis, Estação Ecológica de Assis (22°34'S; 50°24'W), 1♂ 1♀, 25‒30.XI.2002, Exp . Biota leg. ( IBSP 98907 ; 98908); Assis [22°39'43"S; 50°24'43"W], 3♂, F.T.S. Morimoto leg. ( IBSP 166852‒166854 ) ; Rosana, Usina Hidrelétrica Engenheiro Sérgio Motta [22°34'48"S; 53°03'32"W], 1♀, I‒II.2000, E. Butantan leg. (IBSP 29705); Bernardino de Campos [23°00'46"S; 49°28'26"W], 1♀, 19.XI.2003, A.C.B. Silveira leg. ( IBSP 40946 ) ; Ubatuba, Parque Estadual da Ilha Anchieta (23°31'‒ 23°34'S; 45°02'‒ 45°05'W), 1♂, 23‒30.VII.2001, Exp. Biota leg. ( IBSP 66834 ) ; São Paulo [23°32'52"S; 46°38'09"W], 1♀, X.1991, J.C. Ferreira leg. ( IBSP 5822 ) ; Barueri [23°30'39"S; 46°52'33"W], 1♀, 9.I.1966, K. Lenko leg. ( MZSP 5598 ) ; 1♀, 3.X.1960, K. Lenko leg. (MZSP 8387); Registro, Porto Cabral [24°29'16"S; 47°50'38"W], 2♂, L. Travessos F° leg. (MZSP 77; 8591); Rio de Janeiro State: Campos dos Goytacazes, Morro Itaoca, Aprovisionamento (21°45'14"S; 41°19'26"W), 1♀, 22.I.2010, M. Marques leg. ( IBSP 166857 ) ; Paraíba do Sul, Fazenda Maravilha (22°12'S; 43°16'W), 1♀, 16‒18.VIII.2001, Exp. Biota leg. ( IBSP 98888 ) ; Macaé, Ilha de Santana [22°24'S; 41°42'W], 1♂, 19‒20.X.1986, R.L.C. Baptista leg. ( MNRJ 6406 ) ; Pinheiral , Fazenda Santa Helena [22°31'S; 43°58'W], 3♂ 1♀, 5‒11.XI.1999, A.D. Brescovit et al. leg. ( IBSP 98884‒98887 ) ; Rio de Janeiro, Floresta da Tijuca, Guanabara [22°57'47"S; 43°14'40"W], 3♂, VI.1966, Alvarenga leg. ( MZSP 20137 ; 20139; 20167) ; Paraná State: Diamante do Paraná [22°37'06"S; 52°51'23"W], Estação Ecológica do Caiuá , 1♀, 2012, D. Araujo et al. leg. ( IBSP 166855 ) ; Pinhais [22°26'41"S; 49°11'33"W], Serra da Farinha Seca , 1♀, 15‒20.IX.1995, E.L. Aracnologia leg. ( MCTP 7649 ) ; Cambará [23°02'45''S; 50°04'26''W], 1♀, 15‒17.VI.1937, H.E. Hinton leg. ( NHM 1941.1.7.63) ; BOLIVIA: Santa Cruz Department: Buena Vista , 344m (17°29'33,6"S; 63°39'29,9"W), 1♂, 2.XII.2010, R . Pintoda-Rocha et al. leg. ( MZSP 68119 ); PARAGUAI: 1♀, 1891‒1893, Dr . Bohls leg. (NHM 1906.3.24.3-1500 (hart)).

Diagnosis. Ariadna boliviana is similar to A. isthmica , A. ipojuca n. sp. and A. gaucha n. sp. due to the morphology of male palp ( Figs 37A‒B , 44A‒B , 58G‒H , 61A‒B ), metatarsi IV ( Figs 36F , 43F , 58F , 60F ), and leg macrosetae pattern of females, but differ by the presence of males with sinuous metatarsi I, with a marked bend in the proximal region ( Fig. 36C‒E ); females differ from these species, except A. gaucha n. sp., by the presence of a ventral lobe longer than the dorsal one; it differs from A. gaucha n. sp. by the less sinuous ventral lobe ( Figs 10A‒C , 37C‒D ).

Description. Male (IBSP 152775). Carapace and chelicerae brownish orange ( Fig. 36A ). Endites orange; labium dark orange. Sternum orange with darker margins, and three pairs of dark marginal areas, the hind one fainted ( Fig. 36B ). Palps light orange ( Fig. 37A‒B ). Legs brownish orange, pairs I‒II darker, with the femur, patella and tibia marbled with dark pigment, and dark diffuse rings in the distal region of metatarsus ( Fig. 36C‒F ). Abdomen grey, lighter ventrally ( Fig. 36A‒B ). Total length 8.64; carapace 4.12 long, 2.8 wide. Palps: tibia incrassated, with the dorso-ventral diameter shorter than the bulb; bulb sub-rectangular, mid-portion shorter than the embolus and directed backwards; mid-portion/embolus transition conspicuous; embolus long and with a tubular tip ( Figs 4A‒C , 37A‒B ). Legs: robust and coated with setae ( Fig. 36C‒F ); metatarsi I with short macrosetae, with similar size ( Fig. 36C‒E ); metatarsi IV sinuous, in lateral view ( Fig. 36F ); tarsal brush of putative chemosensory setae present in legs II‒IV, extending to the median region of the metatarsi ( Fig. 36F ). Leg formula: I-II-IV-III. Leg measurements: I, femur 3.92, patella 1.6, tibia 3.56, metatarsus 3.84, tarsus 0.84, total 13.76; II, 3.76, 1.6, 3.44, 3.6, 0.84, 13.24; III, 2.68, 1.28, 2.04, 2.24, 0.76, 9.0; IV, 3.16, 1.48, 2.6, 2.32, 0.8, 10.36. Macrosetae: I, femur d0-0-1- 0-1-0-1-0-2, p0-0-0-0-0-1-1-0; patella p0-0-1/0; tibia d0-0-0-1/0-0-1-0, r1-1-0-1-0-1-0, vp1-0-0-0-0-0-1, vr2-0-1- 0-1-0/1-1, r1-1-1-1-1-1-1-1; metatarsus p0-0-1-0-0-0-0-0-0-0, vp0-0-0-1-1-1-1-1-0-0, vr0-0-0-0-1-0-0-1 ( Fig. 36C‒E ); II, femur d0-0-1-0-1-0-1-1-2, p0-0-0-0-0-1-1-0; tibia d0-0-0-0-0-1-0, p1-1-0-1-0-1-0, vp0-0-0-0-1-0-1, vr2-0-1-0-1-0-1, r1-1/0-1-1-2/1-0-1-0; metatarsus p0-0-1-0-0-0-0, vp0-0-1-0-0/1-1-0-1, vr0-1-0-1-1-0-1-1, r0-0-1- 0-0-1-0-0; IV, D1-1-1-0-1-0-0-0, r0-0-0-0-0-0-1-0; IV, metatarsus vp0-0-0-0-0-0-1, vr metatarsal comb with 4 macrosetae.

Female (IBSP 193500). Carapace and chelicerae dark reddish brown ( Fig. 36G ). Endites brownish orange; labium dark brownish orange. Sternum brownish orange with darker margins, and three pairs of dark marginal areas, the hind one fainted ( Fig. 36H ). Palps brownish orange, darkening gradually in distal direction. Legs brownish orange, pairs I‒II darker and with dark pigment densely distributed in the femur, patella, tibia, and proximal region of the metatarsus, and forming rings in metatarsus and tarsus distal region ( Fig. 36I ‒J ). Abdomen as in male ( Fig. 36G‒H ). Total length 12.4; carapace 5.44 long, 3.6 wide. Carapace with the cephalic region elevated ( Figs 1B , 36G ). 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. 7A‒C , 36I ‒J ). Leg formula: I-II-IV-III. Leg measurements: I, femur 4.28, patella 2.12, tibia 3.6, metatarsus 3.44, tarsus 0.88, total 14.32; II, 4.0, 2.04, 3.52, 3.32, 0.84, 13.72; III, 2.96, 1.56, 2.24, 2.24, 0.8, 9.8; IV, 3.76, 1.84, 2.92, 2.44, 0.8, 11.76. Macrosetae: I, femur d0-0-0-0-0-0-2, 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, r0-1-0-1-0-1-0; metatarsus vp1-1-1-1-1-1-1-1-1, vr1-1-1-1/0-1-1-1-1-1 ( Fig. 36I ‒J ); II, femur d0-0-0-0-0-2-0, p0-0-0-0-1-1-0; tibia p0-1-0-1-0-1-0, vp0-0-1(slender)-0-1-0-1, vr1-0-1-0-1-0-1, r0-1-0-1-0-1-0; metatarsus vp1-1-1/0-1-1-1-1-1-1-1, vr1-1-1-0-0-1-1-0-1-1; IV, metatarsus vp0-0-0-0-0-0-1, vr metatarsal comb with 4 macrosetae ( Fig. 7F ). Internal genitalia: anterior receptaculum with glandular ducts plate located in the median region, expanded in its proximal region ( Figs 10A‒C , 37C‒D ).

Variation. Male (n=10): Total length 5.2‒8.64; carapace 2.8‒4.12 long, 1.96‒2.8 wide; femur I 2.96‒3.96. Female (n=10): total length 8.4‒12.4; carapace 4.12‒5.76 long, 2.6‒3.8 wide; femur I 2.84‒4.52.

Distribution. Suriname, Bolivia, Paraguay and almost entire Brazilian territory ( Fig. 71 ).

Figures

FIGURE 1. Images of live specimens of Ariadna: Ariadna mollis (Holmberg, 1876), male (A) and female (B); Ariadna crassipalpa (Blackwall, 1863), female (C); Aridna comata O. P.-Cambridge, 1898, female (D). Photos by R.P. Indicatti (A‒C) and L.S. Carvalho (D).

FIGURE 3. SEM images of Ariadna boliviana Simon, 1907, male from Estação Ecológica de Jataí (IBSP 166947) (A, C‒F) and female from Paranaíba (IBSP 14084) (B): cephalothorax, dorsal view (A, B); chelicerae, frontal view (C), arrowheads = basal transverse ridge, asterisks = basal longitudinal band of ridges and/or tubercles; left chelicera, ventro-prolateral view (D), arrowhead = internal serrula, asterisk = left inset = cheliceral tooth, right inset = cheliceral gland; endites and labium, ventral view (E); endites and labrum, frontal view (F), inset = setae that compose the distal setae tuft.

FIGURE4. SEM imagensof Ariadna bolivianaSimon, 1907, males from Parque Estadual do Rio Doce (UFMG 10501) (A‒C) and Estação Ecológica de Jataí (IBSP 166947) (D‒E), and female from Paranaíba (IBSP 14084) (F‒G): left palp, retrolateral (A) and frontal view (B), arrowhead = cymbium distal notch, inset = trichobothrium from palp tibia; embolus tip, retrolateral view (C); bulb, internal view of spermatic duct (D), arrowhead = internal porous stripe; internal porous stripe in detail, internal view (E); right palp, ventro-prolateral view (F), asterisk = thickened and serrated tactile setae; apical region of palp tarsus, arrowheads = chemosensory setae, asterisks = thickened and serrated tactile setae.

FIGURE 5. Ariadna boliviana Simon, 1907, male from Morrinhos (IBSP 152775) (A‒B): left palp, retrolateral view, midportion showing the less sclerotized region in detail (A); tarsus-metatarsus IV junction, retrolateral view (B), arrowheads = ventral brush of putative chemosensory setae,asterisk = preening comb of macrosetae.

FIGURE 7. SEM images of Ariadna boliviana Simon, 1907, female from Paranaíba (IBSP 14084) (A‒G):left leg I, prolateral view (A); leftmetatarsus and tarsus I, prolateralview (B);left metatarsus andtarsus,ventral view (C); left tarsus I,ventral view (D), thickened tactile setae in blue, chemosensory setae in yellow; right metatarsus and tarsus IV, prolateral view (E), arrowheads = brush of thickened and serrated setae; right metatarsus IV, ventro-retrolateral view, distal preening comb of macrosetae (F), asterisks = thickened and serrated setae; left tarsus I, ventral view, detail of thickened setae.

FIGURE 8. SEM images of Ariadna boliviana Simon, 1907, female from Paranaíba (IBSP 14084) (A‒F): spinnerets, ventroposterior view (A), arrowheads = diagnal membranous stripe from ALS; right PLS, posterior view (B); left PMS, posterior view (C); right ALS, posterior view (D), asterisk = prolateral field of strain sensillae; left ALS, detail of the prolateral field of strain sensillae (E), arrowhead = canoe-shaped area, asterisks = rounded areas; colulus, ventral view (F).

FIGURE 10. SEM images of Ariadna boliviana Simon, 1907, female from Parauapebas (IBSP 193499): anterior receptaculum, lateral (A) and frontal view (B); internal genitalia, frontal view (C); posterior wall of bursa copulatrix, lateral view, origin of the posterior receptaculum (D), arrowhead = median membranous crack; pore of a tubular invagination in the membranous cuticle of the posterior receptaculum (E); posterior receptaculum, internal view, tubular invaginations (F‒G).

FIGURE 36. Ariadna boliviana Simon, 1907. Male from Morrinhos (IBSP 152775) (A‒F): habitus, dorsal (A) and ventral view (B); right leg I, prolateral (C) and retrolateral view (D); right metatarsi I, ventral view (E); left metatarsi IV, retrolateral view (F). Female from Parauapebas (IBSP 193500) (G‒J): habitus, dorsal (G) and ventral view (H); right leg I, prolateral (I) and retrolateral view (J). Scale bar:1mm.

FIGURE 37. Ariadna boliviana Simon, 1907. Male from Morrinhos (IBSP 152775) (A‒B): left palp, prolateral (A) and retrolateral view (B). Female from Assis (IBSP 98907) (C‒D): internal genitalia, lateral view (C); anterior receptaculum, ventral view (D).Scale bar:1mm.

FIGURE 43. Ariadna isthmica Beatty, 1970. Males (Paratype) (AMNH) (A‒D, F) and (Holotype) (MCZ 21712) (E), both from Barro Colorado Island: habitus. dorsal (A) and ventral view (B); left leg I, prolateral (C) and retrolateral view (D); left metatarsus I, ventral view (E); left metatarsus IV, retrolateral view (F). Female from Barro Colorado Island (USNM) (G‒J): habitus, dorsal (G) and ventral view (H); left leg I, prolateral (I) and retrolateral view (J). Scale bar: 1mm.

FIGURE 58. Ariadna ipojuca n. sp.. Male (Holotype) from Ipojuca (IBSP 133641) (A‒H): habitus, dorsal (A) and ventral view (B); left leg I, prolateral (C) and retrolateral view (D); left metatarsus I, ventral view (E); left metatarsus IV, retrolateral view (F); left palp, prolateral (G) and retrolateral view (H). Scale bar: 1mm.

FIGURE 60. Ariadna gaucha n. sp.. Male (Paratype) from Porto Alegre (MCN 25873) (A‒F): habitus, dorsal (A) and ventral view (B); rightleg I, prolateral (C) and retrolateral view (D); right metatarsus I, ventral view (E); leftmetatarsus IV,retrolateral view (F).Female(Paratype) from Cantagalo(MCN 1043) (G‒J):habitus, dorsal (G) and ventral view (H); rightleg I, prolateral (I) and retrolateral view (J). Scale bar:1mm.

FIGURE 61. Ariadna gaucha n. sp.. Male (Paratype) from Porto Alegre (MCN 25873) (A‒B): left palp, prolateral (A) and retrolateral view (B). Female (Paratype) from Cantagalo (MCN 1043) (C‒D): internal genitalia, lateral view (E); anterior receptaculum, ventral view (F). Scale bar:1mm.

FIGURE 71. Locality of the specimens of A. obscura, A. boliviana, A. aurea n. sp., A. ipojuca n. sp. and A. ubajara n. sp. examined in the present study.

FIGURE44.Ariadna isthmicaBeatty, 1970.Male (Paratype)from BarroColorado Island (AMNH) (A‒B):left palp,prolateral (A) and retrolateral view (B). Female (Paratype) from Canal Zone Forest Preserve (MCZ 27673) (C‒D): internal genitalia, lateral view (C); anterior receptaculum, ventral view (D). Scale bar: 1mm.