Guasuctenus longipes ( Keyserling, 1891 )

Polotow, Daniele & Brescovit, Antonio D., 2019, Guasuctenus gen. nov., a new Neotropical spider genus of Ctenidae (Araneae), Zootaxa 4624 (4), pp. 539-550: 543-545

publication ID

https://doi.org/10.11646/zootaxa.4624.4.6

publication LSID

lsid:zoobank.org:pub:B8075237-A0FD-4884-9DAA-3F76CB93528A

persistent identifier

http://treatment.plazi.org/id/161387C4-5C0B-FFE9-B790-4F76311CD79A

treatment provided by

Plazi

scientific name

Guasuctenus longipes ( Keyserling, 1891 )
status

comb. nov.

Guasuctenus longipes ( Keyserling, 1891)  comb. nov.

Figs 1–5View FIGURE 1View FIGURE 2View FIGURE 3View FIGURE 4View FIGURE 5, 8View FIGURE 8

Ctenus longipes Keyserling, 1891: 150  , pl. 4, fig. 103 (male holotype from Rio Grande, Rio Grande do Sul, Brazil, von Ihering coll., deposited in BMNH 1890.7.1.2913, examined). Strand 1909: 305; Mello-Leitão 1936: 10, pl. 1, fig. 14, pl. 2, figs 12−13; Polotow & Brescovit 2014, fig. 9C−D; World Spider Catalog 2019.

Ctenus griseus Keyserling, 1891: 152  , pl. 4, fig. 105 (female holotype from Rio Grande, Rio Grande do Sul, Brazil, E. Keyserling coll., deposited in BMNH 1890.7.1.2916, examined). World Spider Catalog 2019. Syn. Nov.

Ctenus vertebratus F.O. Pickard-Cambridge, 1902: 404  , pl. 7, fig. 11 (female holotype from Taquara, Rio Grande do Sul, Brazil, deposited in BMNH, not examined). Mello-Leitão 1931: 13, fig. 4; Mello-Leitão 1936: 30, fig. 13 (Syn.); World Spider Catalog 2019.

Diagnosis. Males of Guasuctenus longipes  ( Fig. 5AView FIGURE 5) can be distinguished from G. vittatissimus  ( Fig. 7AView FIGURE 7) by the median apophysis and base of embolus larger, and RTA slender. Females of Guasuctenus longipes  ( Figs 4BView FIGURE 4, 5CView FIGURE 5) can be distinguished from G. vittatissimus  ( Figs 6BView FIGURE 6, 7CView FIGURE 7) by the median field subpentagonal and shorter lateral projections of the epigynum, pointing to center of the venter of the opisthosoma.

Description. Male (MCTP 47). Carapace, sternum, endites, labium, and legs light brown; chelicerae reddish brown, with basal condyle light brown; opisthosoma with light brown venter and dark brown dorsum with a lighter longitudinal band. Total length 17.30. Carapace 10.30 long and 8.20 wide. Clypeus 0.22 high. Eye diameters: AME 0.36, ALE 0.36, PME 0.48, PLE 0.40. Leg measurements: I: femur 12.20/ patella 5.00/ tibia 13.00/ metatarsus 12.30/ tarsus 5.40/ total 47.90; II: 11.60/ 4.80/ 10.70/ 10.70/ 4.50/ 42.30; III: 10.00/ 3.90/ 8.40/ 9.50/ 3.80/ 35.60; IV: 12.00/ 4.10/ 11.50/ 14.80/ 4.20/ 46.60. 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 3View FIGURE 3 A–C, 5A–B): tibia straight with short RTA; cymbium elongated, longer than tibia; dorsal cymbial apophysis with large base and truncated tip; embolus with large base and curved retrolaterally, with laminar locking lobes; conductor wider than long; tegulum not projected; median apophysis with large base.

Female (MCTP 234). Coloration as in male. Total length 21.9. Carapace 10.5 long and 8.4 wide. Clypeus 0.42 high. Eye diameters: AME 0.34, ALE 0.34, PME 0.36, PLE 0.44. Leg measurements: I: femur 9.1/ patella 4.4/ tibia 8.7/ metatarsus 7.7/ tarsus 3.1/ total 33.0; II: 8.5/ 4.2/ 7.5/ 6.8/ 2.9/ 29.9; III: 7.5/ 3.6/ 6.3/ 6.6/ 2.7/ 26.7; IV: 9.7/ 3.8/ 8.7/ 10.3/ 3.4/ 35.9. 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 4View FIGURE 4 B–D, 5C–D): median field subpentagonal, with small 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 with reborded margins; fertilization ducts laminar.

Variation. 10 males: total length: 16.3–24.4; carapace length: 8.6–13.5; femur I length: 9.6– 13.9. 10 females: total length: 16.6–29.8; carapace length: 8.6–13.5; femur I length: 7.6–11.9.

Additional material examined. BRAZIL. Santa Catarina. Seara (-27.147, -52.336), 1 male, 31.I.1996, A.B. Bonaldo, A. Kury & R. Rocha coll. ( MCN)GoogleMaps  ; Jacinto Machado (-49.763, -28.997), 1 female, XII.1976, J.E. Lima coll. ( IBSP 2844View Materials)GoogleMaps  . Rio Grande do Sul. Bom Jesus (-28.610, -50.427), 1 female, 28–30.III.1998, A.B. Bonaldo coll. ( MCN 29279View Materials); ( Itaimbézinho , -28.650, -50.637)GoogleMaps  2 females, 3.XI.1962, L. Buckup coll. ( MCN 1804)  . Nova Prata (-28.785, -51.608), 1 female, 20.IV.1973, E.J. Hilani coll. ( MCN 3648)GoogleMaps  ; Arroio do Tigre (-29.334, -53.088), 1 female, 6.V.1978, E.H. Buckup coll. ( MCN 7832)GoogleMaps  ; Bento Gonçalves (-29.154, -51.519), 1 male, 30.III.1991, M. Bernardo coll. ( MCTP 47View Materials)GoogleMaps  ; 1 male, 15.III.1993, V. Bernardes coll. ( MCTP 3060View Materials)GoogleMaps  ; 2 males, IV.1995, A. Bernardo coll. ( MCTP 6190View Materials)  ; Canela (-29.352, -50.802), 1 male, 5.II.1977, A. Lise coll. ( MCN 5182)GoogleMaps  ; 1 male, 3.III.2003, C. Lessa coll. ( MCN 35200View Materials)GoogleMaps  ; São Francisco de Paula (-29.273, -50.534), 1 female, 14.V.1993, A. Braul coll. ( MCTP 6233View Materials)GoogleMaps  ; 1 male, Pristo coll. ( MNRJ 13053View Materials); ( Pró-Mata , -29.480, -50.174)GoogleMaps  1 female, 9.X.1994, A. Braul & R. Ott coll. ( MCTP 5481View Materials); ( Cazuza Ferreira , -28.931, -50.658)GoogleMaps  1 male, 24.III.1973, A. Lise coll. ( MCN 915)  ; Torres (-29.342, -49.765), 1 female, 29.X.1956, T. Lessa coll. ( MCN 1730)GoogleMaps  ; Santa Maria (-29.703, -53.742), 1 male, 27. VI.1999, L. Indrusiak coll. ( IBSP 168743View Materials)GoogleMaps  ; 1 male, 01/IV/2000, L. Indrusiak coll. ( IBSP 214684View Materials); (Zona Urbana)  , 1 male, IV.2000, L. Indrusiak coll. ( IBSP 168745View Materials)  ; Santa Cruz do Sul (-29.724, -52.428), 1 female, VIII.1950, R. Steinhaus coll. ( IBSP 1120View Materials)GoogleMaps  ; 1 male, 22.IV.1995, R. Ott coll. ( MCTP 6111View Materials)GoogleMaps  ; Novo Hamburgo (-29.725, -51.086), 1 female, 17. VI.1988, C.J. Becker coll. ( MCTP 234View Materials)GoogleMaps  ; 2 female, 1.X.1986, C.J. Becker coll. ( MCTP 248View Materials, 249View Materials)  ; Taquara (- 29.651, -50.784), 1 female, 17.IV.1975, A. Lise coll. ( MCN 2581)GoogleMaps  ; Maquiné (-29.611, -50.240), 1 female, 16.I.1993, G.L. Fiorentia coll. ( MCTP 3129View Materials); ( Fepagro , -29.650, -50.200)GoogleMaps  , 1 female, 18–27.I.2002, Equipe Biota coll. ( IBSP 88096View Materials)  ; São Leopoldo (-29.764, -51.147), 1 female, 26.IV.1963, T. Lessa coll. ( MCN 1219)GoogleMaps  ; Rio Pardo (-29.994, -52.442), 1 male, 10.II.1969, A. Lise coll. ( MCN 418)GoogleMaps  ; Porto Alegre (-30.021, -51.179), 1 female, Gliesch coll. ( MNRJ 13035View Materials)GoogleMaps  ; 1 female, 5.IV.1968, A. Lise coll. ( MCN 659)  ; 1 female, 15.IV.1968, A. Lise coll. ( MCN 384)  ; 1 female, 12.VIII.1991, D. Picada coll. ( MCTP 1580View Materials)  ; 1 male, 27.I.1995, E.M. da Silva coll. ( MCN 26481View Materials)  ; Viamão (Itapuã, Praia das Pombas , -30.340, -51.036), 1 female, 13/12/1994, A.P. Lopes coll. ( IBSP 52224View Materials)GoogleMaps  . URUGUAY. 1 male, 1991, M. Simó coll. ( IBSP 11908View Materials)  ; Treinta y Tres. Treinta y Tres, ( Yerbal Chico river , -32.927, -54.456), 1 male ( FCE)GoogleMaps  .

Courtship behavior. Recently described by Trillo et al. (2018) from specimens collected at the ravine shorelines of Yerbal Chico river, close to Quebrada de los Cuervos, Treinta y Tres, Uruguay. Vouchers were examined and the identification was confirmed.

Distribution. Southern Brazil and Uruguay ( Fig. 8View FIGURE 8).

MCN

McNeese State University

VI

Mykotektet, National Veterinary Institute

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Ctenidae

Genus

Guasuctenus

Loc

Guasuctenus longipes ( Keyserling, 1891 )

Polotow, Daniele & Brescovit, Antonio D. 2019
2019
Loc

Ctenus longipes

Mello-Leitao, C. F. de 1936: 10
Strand, E. 1909: 305
Keyserling, E. 1891: 150
Loc

Ctenus griseus

Keyserling, E. 1891: 152
Loc

Ctenus vertebratus F.O. Pickard-Cambridge, 1902: 404

Mello-Leitao, C. F. de 1936: 30
Mello-Leitao, C. F. de 1931: 13
Pickard-Cambridge, F. O. 1902: 404