Guasuctenus gen. nov., a new Neotropical spider genus of Ctenidae (Araneae) Author Polotow, Daniele Author Brescovit, Antonio D. text Zootaxa 2019 2019-07-02 4624 4 539 550 journal article 26329 10.11646/zootaxa.4624.4.6 d2dda052-5654-4b34-bf72-b6d557300f7e 1175-5326 3265596 B8075237-A0FD-4884-9DAA-3F76CB93528A Guasuctenus vittatissimus ( Strand, 1916 ) new rank, new comb. Figs 6–8 Ctenus longipes vittatissimus Strand, 1916: 130 , 131 (one female lectotype and two immature paralectotypes , here designated, from Joinville, Santa Catarina , Brazil , W. Ehrhardt coll., deposited in SMF 4541 and 4561, respectively, examined). World Spider Catalog 2019 . Diagnosis. Males of Guasuctenus vittatissimus ( Fig. 7A ) can be distinguished from G. longipes ( Fig. 5A ) by the median apophysis and base of embolus smaller, locking lobes of embolus visible in ventral view, and RTA larger and truncated. Females of Guasuctenus vittatissimus ( Figs 6B , 7C ) can be distinguished from G. longipes ( Figs 4B , 5C ) by the median field of epigynum wider than longer, and lateral projections of the epigynum shorter and pointing ventrally. Description. Male (MHCI 3504). Carapace, sternum, endites, labium, and legs light brown; chelicerae reddish brown, with basal condyle light brown; opisthosoma with light brown venter and dorsum dark brown with a lighter longitudinal band. Total length 16.7. Carapace 10.0 long and 7.6 wide. Clypeus 0.32 high. Eye diameters: AME 0.35, ALE 0.37, PME 0.40, PLE 0.44. Leg measurements: I: femur 12.3/ patella 4.8/ tibia 12.9/ metatarsus 12.3/ tarsus 5.2/ total 47.5; II: 11.1/ 4.8/ 10.5/ 10.5/ 4.1/ 41.0; III: 9.6/ 4.1/ 8.6/ 9.4/ 3.8/ 35.5; IV: 12.2/ 4.1/ 12.4/ 14.7/ 4.8/ 48.2. Leg formula 1423. Leg spination: tibia I and II v2-2 -2-2-2, r0-1-0, p0-1-0; III and IV v2-2 -2, r1-1, p1-1; metatarsus I and II v2-2 -2, r0-1-0, p0-1-0; III v2-2 -2, p1-1-1, r1-1-1; IV v1-1 -1-1-1-2, r1-1-1, p1-1-1. Palp ( Figs 6A , 7 A–B): tibia straight with short RTA; cymbium elongated, slightly longer than tibia; dorsal cymbial apophysis with large base and pointed tip; embolus with large base and curved retrolaterally, with laminar locking lobes visible ventrally; conductor wider than long; tegulum not projected; median apophysis with oblique base. FIGURE 6. Guasuctenus vitattissimus ( Strand, 1916 ) . A, male palp, ventral view, with arrow pointing retrolateral projection of the embolus .; B, epigynum, ventral view, with arrow pointing posterior lateral excavations. Female. (MHCI 3505). Coloration as in male. Total length 26.8. Carapace 11.8 long and 9.1 wide. Clypeus 0.55 high. Eye diameters: AME 0.37, ALE 0.37, PME 0.38, PLE 0.40. Leg measurements: I: femur 10.7/ patella 5.5/ tibia 10.2/ metatarsus 8.6/ tarsus 3.5/ total 38.5; II: 10.0/ 5.0/ 8.6/ 8.1/ 3.3/ 35.0; III: 8.9/ 4.2/ 7.3/ 7.7/ 3.3/ 31.4; IV: 11.1/ 4.5/ 9.4/ 11.9/ 3.8/ 40.7. Leg formula 4123. Leg spination: tibia I and II v2-2 -2-2-2, r0, p0; III and IV v2-2 -2, r1-1, p1-1; metatarsus I and II v2-2 -2, r0, p0; III v2-2 -2, r1-1-1, p-1-1-1; IV v1-1 -1-1-1-2, r1-1-1, p1- 1-1. Epigynum ( Figs 6B , 7 C–D): median field wider than long, with large lateral excavations and setae covering central area; lateral fields bearing robust lateral projections; copulatory ducts curved inward; base of spermathecae bean-shaped and head of spermathecae small and covered by the base of spermathecae; fertilization ducts laminar. Variation. 10 males : total length: 16.9–20.8; carapace length: 9.0–10.9; femur I length: 10.3– 12.2. 10 females: total length: 18.8–28.8; carapace length: 8.9–13.2; femur I length: 7.9–11.5. Embolus with ( Fig. 6A ) or without ( Fig. 7A ) retrolateral projection. Additional material examined. BRAZIL . Rio de Janeiro . Rio de Janeiro ( Jardim Botânico , -22.967 , -43.225 ), 1 female , V.1909 , W. Jungmann coll. ( SMF ) . São Paulo . Viradouro ( -20.871 , -48.295 ), 1 female , II.1950 , A. Cruz coll. ( IBSP 1055 ) ; Amparo ( Arcadas , -22.724 , -46.838 ), 1 female , 24.V.1990 ( IBSP 14103 ) ; Morungaba ( -22.883 , -46.788 ), 1 female , 15.IV.2002 , R. Rodrigo coll. ( IBSP 34985 ) ; Tietê ( -23.095 , -47.712 ), 1 female , XII.994, A.A. Moraes coll. ( IBSP 6032 ) ; Itu ( -23.264 , -47.293 ), 1 female , 23.VII.1973 , R. D’Ávila coll. ( IBSP 8136 ) ; 1 female , 6.V.1999 , R. D’Ávila coll. ( IBSP 23557 ) ; Guararema ( -23.414 , -46.034 ), 1 female , 2.II.1970 , J.C. Pestana coll. ( IBSP 2441 ) ; Itapetininga ( -23.589 , -48.033 ), 1 female , 3.XII.2001 , C. Antonio coll. ( IBSP 34982 ) ; Piedade ( - 23.711 , -47.417 ), 1 female , 20.VII.2001 , M. Datu coll. ( IBSP 29257 ) ; Ibiúna ( -23.792 , -47.196 ), 1 male , 11.III.1980 , M. Issler coll. ( IBSP 1360 ) ; 1 female , 2.VII.2001 , F.S. Takamura coll. ( IBSP 32158 ) ; Cotia ( -23.606 , -46.904 ), 1 female , IV.1984 , L. Berginarra coll. ( IBSP 4679 ) ; Caucaia do Alto ( -23.699 , -47.019 ), 1 female , III.1960 , U.M. Silva coll. ( IBSP 1510 ) ; Embú-Guaçu ( -23.843 , -46.821 ), 2 males , III.1995 , C. Casoy col. ( IBSP 5982 , 6188 ) ; Itapecerica da Serra ( -23.733 , -46.856 ), 2 males , 13.III.1972 , M. Grassmann coll. ( IBSP 2532 ) ; 1 male , I.1991 , L. Jost coll. ( IBSP 5050 ) ; 1 female , 24.X.2000 , D. Rocha col. ( IBSP 27333 ) ; 1 male , 27.III.2000 , J.A. Nogueira coll. ( IBSP 27482 ) ; São Paulo ( -23.562 , -46.642 ), 1 female , IV.1974 , A. Toth coll. ( IBSP 2722 ) ; 1 female , 29.XII.1998 , F.C. Pioker coll. ( IBSP 20317 ); ( Itaquera , -23.544 , -46.455 ) , 1 female , 30.V.1993 , A.H. Souza coll. ( IBSP 8055 ); ( Santo Amaro , -23.651 , -46.705 ) , III.1995 , R. Sales coll. ( IBSP 6026 ); ( Reservatório Guarapiranga , Ilha dos Eucaliptos , -23.733 , -46.733 ) , 5 males , 8 females , 7−13.X.2004 , I. Cizauskas & C.R.M Garcia coll. ( IBSP 65614 , 65616−65620 , 65622−65625 ) ; Salesópolis ( -23.584 , -45.842 ), 1 female , 8–10.IV.2000 , A.D. Brescovit coll. ( IBSP 27082 ) ; Pilar do Sul ( -23.849 , -47.729 ), 1 female , IX.1985 , E. Oliveira coll. ( IBSP 4693 ) ; São Lourenço da Serra ( -23.855 , -46.939 ), 1 female , 10.X.1979 , R. Bush coll. ( IBSP 8542 ); ( Sítio Estrela ) , 1 male , III.1976 , G.J. Abdo coll. ( IBSP 5171 ) ; Juquitiba ( -23.946 , -47.037 ), 1 female , VIII.1991 , V.B. Oliveira coll. ( IBSP 5825 ) ; 1 female , III.1982 , A. Dib coll. ( IBSP 3144 ) ; 1 female , II.1986 , A. Bosseto col. ( IBSP 4983 ) ; 1 female , VI .1984 , A. Barberini coll. ( IBSP 4681 ) ; São Vicente ( Ilha Porchat , -23.977 , -46.371 ), 1 female , 9.V.1967 , E. Bozaciyan coll. ( IBSP 2070 ) ; Ribeirão Grande ( -24.172 , -48.363 ), 1 male , 23.IV.1996 , A. Nogueira coll. ( IBSP 7614 ) ; Juquiá ( -24.317 , -47.634 ), 1 female , 3. VI .1986 , V.R. Costa coll. ( IBSP 8524 ) ; Miracatu ( -24.199 , -47.407 ), 1 female , 9.V.1972 ( IBSP 2542 ) ; 1 female , IX.1985 , M. Olani coll. ( IBSP 4694 ) ; Mongaguá ( -24.110 , -46.676 ), 1 male , VII.1971 , A. Maia coll. ( IBSP 2433 ) ; São Sebastião ( Ilha de Alcatrazes , -24.100 , -45.692 ), 1 male , 3 females , VI .1950 , IBSP team coll. ( IBSP 994 , 1088 ) ; 1 male , 4 females , XII.1996 , R. Bertani coll. ( IBSP 7887 , 7888 ) ; Itanhaém ( -24.152 , -46.824 ), 1 female , IV.1978 , W. Francisco coll. ( IBSP 4698 ) ; Capão Bonito ( -24.154 , -48.288 ), 1 female , IX.2002 , P. Caruso coll. ( IBSP 41285 ) ; Eldorado ( Parque Estadual Intervales , -24.326 , -48.192 ), 1 female , IX.2001 , D. Peccinini coll. ( IBSP 14934 ) ; Iporanga ( -24.584 , -48.593 ), 1 female , V.1986 , I.H. Waligora coll. ( IBSP 4180 ); ( Parque Estadual Intervales , -24.308 , -48.274 ) , 1 female , 31.VIII.2001 , F.P. Franco coll. ( IBSP 36324 ); ( Parque Estadual Turístico do Alto Ribeira , -24.543 , -48.682 ) 1 male , 10.IV.2001 , F. Pellegatti-Franco coll. ( IBSP 27897 ) ; Iguape ( -24.558 , -47.437 ), 1 male , 1 female , 12–18.VII.2004 , Equipe Biota coll. ( IBSP 44858 ) . Paraná . Piraí do Sul ( -24.506 , - 49.946 ), 1 female , 15.I.1935 , G. Fonseca coll. ( IBSP 153 ) ; Castro ( -24.797 , -50.001 ), 1 female , XII.1958 , A. May- er coll. ( MHCI 4221 ) ; Guaraqueçaba , ( Parque Nacional de Superagüi , -25.340 , -48.170 ) 12 males , 7 females , 1 immature, 12−14/XII/2016 , M. Rincão coll. ( IBSP 215866 ; 215908, 215923, 215926, 215930, 215934−215935, 215937, 215945, 216086, 216096, 216099, 216104−216105, 216116−216117, 217755, 217760−217761, 217765) ; Candói / Mangueirinha ( Usina Hidrelétrica de Segredo , Reservatório do Rio Jordão , -25.793 , -52.109 ), 1 female , 24.IV–4.V.1996 , R. Bertani coll. ( IBSP 7209 ) ; Palmeira ( -25.426 , -50.003 ), 1 female , 26.III.1951 , J.B. Bastos coll. ( IBSP 652 ) ; Curitiba ( -25.461 , -49.284 ), 2 males , R. Lange coll. ( MHCI 1015 , 1016 ) ; 1 female , 1942, R. Lange coll. ( MHCI 1558 ) ; 1 male , 5. VI .1966 , E. Rosal coll. ( MHCI 4501 ) ; 1 male , 24/III/1968 , A. Mayer coll. ( MHCI 4629 ) ; 1 male , 4.III.1968 , E. Rosal coll. ( MHCI 4681 ) ; 1 female , XI.2001 , E. Ramires coll. ( IBSP 35896 ) ; 1 female , V.2002 , E. Ramires coll. ( IBSP 38183 ) ; Piraquara ( -25.452 , -49.067 ), 1 male , 1 female , II.1945 , B. Hertel coll. ( MHCI 1584 , 1585 ) ; 1 female , V.1985 , E. Guimarães coll. ( IBSP 4690 ); ( Volta Grande , -25.450 , -49.054 ) 1 male , 1 female , B. Hertel coll. ( MHCI 3504 , 3505 , drawings and measurements) ; Araucária ( -25.583 , -49.399 ), 1 female , 18.III.1952 , C. Halssemann coll. ( IBSP 686 ) ; Matinhos ( -25.791 , -48.534 ), 1 male , I.1986 , F. Straube coll. ( MHCI 1587 ) ; Mallet ( -25.895 , -50.841 ), 1 female , 31.X.1934 , H.L. José coll. ( IBSP 426 ) ; 1 female , 4.VII.1973 , M.M. Domaradsky coll. ( IBSP 2673 ) ; Tijucas do Sul ( -25.925 , -49.178 ), 2 females , 27.VII–30.IX.2000 , J. Ricetti coll. ( IBSP 39098 , 39132 ); ( Lagoa , -25.954 , -49.218 ) 1 female , 14.II.2001 , J. Ricetti coll. ( IBSP 39205 ) ; 1 female , 28.X.2001 , J. Ricetti coll. ( IBSP 39131 ) ; União da Vitória ( -26.221 , -51.058 ), 1 male , 11.III.1935 , A. Zeiger coll. ( IBSP 422 ) ; 1 female , 20.X.1967 , B. Behr coll. ( IBSP 2082 ) ; 5 females , 1970, V. Eickstedt coll. ( IBSP 2503 ) ; Pinhão ( Usina Hidrelétrica Foz do Areia , -26.006 , -51.669 ), 2 females , IV.1980 ( IBSP 2217 ) ; 4 females , 20–23.IV.1980 , IBSP team coll. ( IBSP 10504 , 10521 , 10536 ) . Santa Catarina . Mafra ( -26.124 , -49.817 ), 1 female , 13.IX.1948 , A. Souza coll. ( IBSP 103 ) ; 1 female , IX/1948 , A. Souza coll. ( IBSP 3197 ) ; 1 female , II.1956 , A. Souza coll. ( IBSP 1211 ) ; Porto União ( - 26.239 , -51.081 ), 1 female , XI.1996 , E.J. Sanches coll. ( IBSP 16236 ); ( Lança ) 1 female , 8.III.1935 , G. Perske coll. ( IBSP 154 ) ; Corupá ( -26.435 , -49.245 ), 1 male , 25.III.1949 , G. Roeder coll. ( IBSP 208 ) ; Blumenau ( Parque Natural Municipal Nascentes do Garcia , -27.016 , -49.150 ), 1 female , 21−28.I.2003 ( IBSP 127441 ) ; Florianópolis ( Reserva Biológica Marinha Arvoredo , -27.225 , -48.365 ), 1 female , 13–14.X.1994 , A.A. Lise coll. ( MCTP 5110 ); ( Ilha do Arvoredo , -27.281 , -48.366 ) , 1 female , 15–16.X.1993 , A.A. Lise coll. ( MCTP 4050 ) ; Rancho Queimado ( -27.682 , -49.081 ), 2 females , XI/1995 , A.B. Bonaldo coll. ( MCN 26735) . Distribution. Southern and southeastern Brazil ( Fig. 8 ).