Scytodes brignolii, Rheims, Cristina A. & Brescovit, Antonio D., 2009

Rheims, Cristina A. & Brescovit, Antonio D., 2009, New additions to the Brazilian fauna of the genus Scytodes Latreille (Araneae: Scytodidae) with emphasis on the Atlantic Forest species, Zootaxa 2116, pp. 1-45 : 29-30

Scytodes brignolii new species

Figs. 106–111

Scytodes sp. O: Brignoli. 1976:172, fig.100 (only the female)

Type material: Holotype: male from Fazenda Nossa Senhora Aparecida [21°07' S; 56°28' W], Bonito , Mato Grosso do Sul, Brazil, 14–23 October 2002, Equipe Biota, deposited in IBSP 92462.

Paratypes: BRAZIL. Mato Grosso do Sul: Bonito [21°07' S; 56°28' W] (Baía Bonita), 13 2Ƥ, 14–23 October 2002, Equipe Biota ( IBSP 92467, 92461; MZSP 28960); (Fazenda Nossa Senhora Aparecida), 13, 14–23 October 2002, Equipe Biota ( MZSP 28961); (Fazenda Pitangueiras), 1Ƥ, 14–23 October 2002, Equipe Biota ( IBSP 2466). São Paulo: Campos do Jordão [22°43' S; 45°34' W], 1Ƥ, 3 January 1948, F. Lane ( MZSP 11789); Ilhabela [23°46' S; 45°21' W], 23, 9–15 October 2002, Equipe Biota ( IBSP 38423, 38422); Tapiraí [23°56' S; 47°28' W], 13 1Ƥ, 11–13 September 1997, C.A Rheims & V.C. Onófrio ( IBSP 38421, 13284); Iporanga [24°34' S; 48°34' W] (Parque Estadual Intervales), 1Ƥ, November 1996, A Leme ( IBSP 7839). Paraná: Jundiaí do Sul [23°26' S; 50°16' W], 1Ƥ, 18 August 1986, Equipe Profaupar (MCN 20289).

Other material examined. BRAZIL. Mato Grosso do Sul: Bonito [21°07' S; 56°28' W] (Baía Bonita), 13, 14–23 October 2002, Equipe Biota ( IBSP 92464); (Fazenda Nossa Senhora Aparecida), 1Ƥ, 14–23 October 2002, Equipe Biota ( IBSP 92463). São Paulo: Ilhabela [23°46' S; 45°21' W], 1Ƥ, 9–15 October 2001, Equipe Biota ( IBSP 38425, 38424); Tapiraí [23°56' S; 47°28' W], 1Ƥ, 12 September 1997, C.A Rheims & V.C. Onófrio ( IBSP 13092); Iporanga [24°34' S; 48°34' W] (Parque Estadual Intervales), 2Ƥ 1juv., June 1996, A Leme ( IBSP 7856, 7859); same locality, 1Ƥ, 28 November 2000, M.O Gonzaga ( IBSP 36486); (Parque Estadual Turístico do Alto Ribeira), 2Ƥ, 25 September 2000, R. Andrade ( IBSP 29358); 1Ƥ, 6 March 2001, R. Andrade ( IBSP 29383); same locality (Gruta do Ouro Grosso), 13, 5–15 November 2001, Equipe Biota ( IBSP 92468). Paraná: Adrianópolis [24°40' S; 49°00' W] (Vale do Ribeira), 2Ƥ, 24 August 2004, D.M. Barros-Battesti ( IBSP 48068).

Etymology. The specific name honours Dr. Paolo Marcello Brignoli (1942–1986), from the Instituto di Zoologia dell'Universitá di Roma, Rome, Italy, who worked on worldwide Scytodes and first suggested that this could be a new Neotropical species.

Diagnosis. The males of Scytodes brignolii n.sp. resemble those of S. pintodarochai n.sp. by the slender distal area of the male palp, partially covering the retrolateral–ventral sclerotized process ( Figs. 107–109 ; 119–121). They are distinguished by the shorter distal area and sclerotized process set closer to each other ( Figs 107–109 ). The females are distinguished from those of the remaining Neotropical Scytodes by the presence of a pair of very small hyaline pockets set close together and two pairs of spermathecae, the anterior ones closer to each other and the posterior pointing outwards ( Fig. 111 ).

Description. Male (Holotype, IBSP 92462) Carapace orange, medially yellow, with brown patterns as shown on Fig. 106 . Chelicerae orange with dorsal, longitudinal brown stripe. Pedipalps orange with brown prolateral markings. Labium and endites pale yellow. Sternum pale yellow with brown markings in front of each coxae. Legs orange. Femur I-IV with ventral pair of longitudinal brown stripes. Abdomen gray with dorsal black pattern ( Fig. 106 ). Total length 3.6. Carapace slightly domed, 1.9 long, 1.6 wide. Eye diameters: PME 0.14, ALE 0.14, PLE 0.14. Lateral eyes on a tubercle. Chelicerae with subapical hyaline keel and inconspicuous stridulatory ridges. Labium 0.14 long, 0.22 wide. Sternum 1.08 long, 0.82 wide. Leg measurements: I: femur 4.6, patella 0.6, tibia 4.9, metatarsus 6.3, tarsus 0.7, total 17.1; II: 3.2, 0.5, 3.1, 4.1, 0.6, 11.5; III: 2.0, 0.5, 1.8, 2.0, 0.5, 6.8; IV: 3.0, 0.6, 2.7, 3.2, 0.7, 10.2. Palpal femur with stridulatory pick short and stout on triangular and projected socket. Cymbium with a strong distal spine and a slender subdistal spine ( Fig. 107 ). Bulb 0.6 long. Distal area with retrolateral short sclerotized process ( Figs. 108–109 ). Abdomen 1.7 long, 1.3 wide, covered with slender hairs.

Female (Paratype, IBSP 13284). Coloration pattern as in male. Total length 5.0. Carapace domed, 2.6 long, 2.1 wide. Eye diameters: PME 0.14, ALE 0.14, PLE 0.16. Lateral eyes on a tubercle. Chelicerae as in male. Labium 0.10 long, 0.28 wide. Sternum 1.22 long, 1.00 wide. Leg measurements: I: femur 3.0, patella 0.5, tibia 3.3, metatarsus 3.8, tarsus 0.7, total 11.3; II: 2.4, 0.5, 2.3, 2.9, 0.6, 8.7; III: 1.8, 0.5, 1.4, 1.8, 0.5, 6.0; IV: 2.2, 0.5, 2.1, 2.4, 0.6, 7.8. Palpal femur as in male. Epigynum with straight and narrow positioning ridges with triangular foveas separated from each other by almost twice their width ( Fig. 110 ). Vulva with pair of small hyaline pockets set close together and two pairs of spermathecae, the anterior ones close to each other and the posterior pointing outwards ( Fig. 111 ). Abdomen 2.4 long, 2.2 wide, covered with slender hairs.

Variation. Eight males: total length 3.5–3.9; carapace 1.9–2.1; femur I 3.4–4.9; bulb 0.52–0.60. Ten females: total length 3.9–5.1; carapace 1.8–2.4; femur I 2.3–3.0.

Distribution. Cerrado and Atlantic Forest. States of Mato Grosso do Sul, São Paulo, Paraná and Santa Catarina ( Brignoli, 1976).

Figures

FIGURES 106 – 117. 106 – 111. Scytodes brignolii n. sp. 106. Male habitus, dorsal. 107 – 109. Left male palp (107 prolateral, 108 retrolateral, 109 detail of distal region, dorsal). 110 – 111. Female epigynum (110 ventral, 111 dorsal). 112 – 116. Scytodes chopim n. sp. 112. Male habitus, dorsal. 113 – 115. Left male palp (113 prolateral, 114 retrolateral, 115 detail of distal region, dorsal). 116 – 117. Female epigynum (116 ventral, 117 dorsal). Scale lines: 0.5 mm.