Scytodes maquine, 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 : 39-40

Scytodes maquine new species

Figs. 136–140

Type material: Holotype: male from Estação Experimental FEPAGRO, Maquiné [29°40' S; 50°10' W], Rio Grande do Sul, Brazil, 18–27 January 2002, Equipe Biota, deposited in IBSP 91920.

Paratypes: BRAZIL. Paraná: Fênix [23°53' S; 51°57' W] (Reserva Estadual de Vila Rica), 1Ƥ, 22 November 1987, A D. Brescovit et al. (MCN 17205). Santa Catarina: Florianópolis, Ilha do Arvoredo [27°17' S; 48°21' W] (Reserva Biológica de Arvoredo), 13, 5–6 October 1995, Lab. Aracnologia ( MCTP 7525); Rancho Queimado [27°40' S; 49°01' W], 13, 8–11 October 1994, A B. Bonaldo (MCN 25861); Blumenau [26°55' S; 49°02' W] (Parque Natural Municipal das Nascentes do Rio Garcia), 33 2Ƥ, 21–28 January 2003, Equipe Biota ( IBSP 92384; 92388; MZSP 28965; 28966). Rio Grande do Sul: São Francisco de Paula [29°25' S; 50°23' W] (Floresta Nacional de São Francisco de Paula), 13 1Ƥ, 2003–2004, R. Baldissera ( IBSP 91939; 91941); 13 1Ƥ, 19 October 1994, A. Braul & R. Ott ( MCTP 5480); Maquiné [29°40' S; 50°10' W] (Estação Experimental FEPAGRO), 23 2Ƥ, 18–27 January 2002, Equipe Biota ( MZSP 28967; 28968; IBSP 91918).

Other material examined. BRAZIL. Paraná: Antonina [25°26' S; 48°43' W], 1Ƥ, 17 February 1987, Equipe Profaupar (MCN 20388); Foz do Iguaçú [25°33' S; 54°34' W] (Parque Nacional do Iguaçú), 1Ƥ, 29–30 March 1993, A B. Bonaldo (MCN 23522). Santa Catarina: Blumenau [26°55' S; 49°02' W] (Parque Natural Municipal das Nascentes do Rio Garcia), 73 8Ƥ, 21–28 January 2003, Equipe Biota ( IBSP 07376–97380; 92382–92387; 92397); Governador Celso Ramos [27°37' S; 51°23' W] (Praia de Palma das Gaivotas), 2Ƥ 2juvs, 1–24 January 1994, L. Moura (MCN 25206); Rancho Queimado [27°40' S; 49°01' W], 23, November 1995, A B. Bonaldo ( IBSP 37655); 13, 8–11 October 1994, L. Moura (MCN 25867); 13 3Ƥ, 13–15 January 1995, L. Moura (MCN 26385); 33 1juv., November 1995, A B. Bonaldo (MCN 26740). Rio Grande do Sul: Cambará do Sul [29°01' S; 50°08' W] (Parque Nacional dos Aparados da Serra Itaimbézinho), 1Ƥ, 20 December 1977, A.A. Lise (MCN 5796); Canela [29°22' S; 50°49' W], 13, 2 December 1973, A.A. Lise, (MCN 2208); 13 2Ƥ, 8 November 1975, A.A. Lise (MCN 3407); 1Ƥ, 6 March 1966, A.A. Lise (MCN 833), (Barragem dos Bugres), 13 2Ƥ, 13–14 December 1999, A B. Bonaldo (MCN); São Francisco de Paula [29°25' S; 50°23' W] (Floresta Nacional de São Francisco de Paula), 33 17Ƥ, 2003–2004, R. Baldissera ( IBSP 91866–91869; 91936–91938; 91940; 91942–91944; 91955–91959); (Centro de Pesquisa e Conservação da Natureza Pró-Mata), 63 8Ƥ 3juvs., 2002, L.A Bertoncello ( IBSP 37656; MCTP); Maquiné [29°40' S; 50°10' W] (Estação Experimental FEPAGRO), 183 11Ƥ, 18–27 January 2006, Equipe Biota, ( IBSP 91906; 91909; 91910; 91912–91917; 91919; 91921–91928); 1Ƥ, 6–8 February 1998, A B. Bonaldo (MCN 23032).

Etymology. The specific name is a noun in apposition that refers to the type locality of the holotype.

Diagnosis. Males of S. maquine n.sp. resemble those of S. fusca Walckenaer by the palp with very simple bulb, distally narrowed and with no projections ( Figs. 137–138 ; Brescovit & Rheims 2000: 322, figs. 9–10). They are distinguished by the distal region slightly widened anteriorly and abruptly narrowed posteriorly ( Figs. 137–138 ). The females are distinguished from those of the remaining Neotropical Scytodes by the large, irregular spermathecae, adjacent to small, slightly oval hyaline pockets ( Fig. 140 ).

Description. Male (Holotype, IBSP 91920). Carapace yellow with brown pattern as shown on Fig. 136 . Chelicerae yellow with dorsal longitudinal brown stripe. Pedipalps yellow. Labium yellow, brown at base. Endites pale yellow. Sternum cream coloured with brown markings in front of each coxae. Legs yellow, except patella I brown. Femora I-IV with pair of ventral longitudinal brown stripes. Tibiae I-II with brown extremities. Tibiae and metatarsi I-IV with dorsal brown stripe. Abdomen gray with black pattern ( Fig. 136 ).

Total length 3.8. Carapace slightly domed, 2.0 long, 1.7 wide. Eye diameters: PME 0.16, ALE 0.16, PLE 0.16. Lateral eyes on a tubercle. Chelicerae with subapical hyaline keel and inconspicuous stridulatory ridges. Labium 0.14 long, 0.28 wide. Sternum 1.1 long, 0.92 wide. Leg measurements: I: femur 4.7, patella 0.5, tibia 4.9, metatarsus 6.1, tarsus 0.7, total 16.8; II: 3.3, 0.5, 3.3, 3.8, 0.6, 11.5; III: 2.0, 0.5, 1.8, 2.2, 0.5, 7.0; IV: 3.1, 0.5, 2.8, 3.2, 0.6, 10.2. Palpal femur with short and stout stridulatory pick with rounded and projected socket. Cymbium with single, strong, distal spine ( Fig. 137 ). Bulb 0.48 long, medially constricted and distally narrowed ( Figs. 137–138 ). Abdomen 1.8 long, 1.4 wide, covered with slender hairs.

Female (Paratype, MCTP 5480). Coloration pattern as in male. Total length 4.7. Carapace slightly domed, 2.4 long, 2.1 wide. Eye diameters: PME 0.14, ALE 0.14, PLE 0.14. Lateral eyes on a tubercle. Chelicerae as in male. Labium 0.18 long, 0.28 wide. Sternum 1.20 long, 0.98 wide. Leg measurements: I: femur 3.1, patella 0.5, tibia 3.2, metatarsus 3.9, tarsus 0.7, total 11.4; II: 2.4, 0.5, 2.5, 2.8, 0.6, 8.8; III: 1.5, 0.5, 1.4, 1.7, 0.5, 5.6; IV: 2.3, 0.5, 2.2, 2.2, 0.6, 7.8. Palpal femur as in male. Epigynum with ridged positioning ridges, separated from each other by twice their width ( Fig. 139 ). Vulva with large, irregular spermathecae, adjacent to small, slightly oval hyaline pockets ( Fig. 140 ). Abdomen 2.3 long, 2.0 wide, as in male.

Variation. Ten males: total length 3.3–4.6; carapace 1.8–2.2; femur I 3.6–5.1; bulb 0.44–0.68. Ten females: total length 4.1–5.2; carapace 1.9–2.7; femur I 2.3–3.9.

Distribution. Atlantic Forest. States of Paraná, Santa Catarina and Rio Grande do Sul.

Figures

FIGURES 130 – 140. 130 – 135. Scytodes tabuleiro n. sp. 130. Male habitus, dorsal. 131 – 133. Left male palp (131 prolateral, 132 retrolateral, 133 detail of distal region, dorsal). 134 – 135. Female epigynum (134 ventral, 135 dorsal). 136 – 140. Scytodes maquine n. sp. 136. Male habitus, dorsal. 137 – 138. Left male palp (137 prolateral, 138 retrolateral). 139 – 140. Female epigynum (139 ventral, 140 dorsal) (SP = sclerotized process). Scale lines: 0.5 mm.