Scytodes imbituba, 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: 41-43

publication ID

http://doi.org/ 10.5281/zenodo.187984

persistent identifier

http://treatment.plazi.org/id/174E87B6-FF80-B55F-98D6-FC1AFB494696

treatment provided by

Plazi

scientific name

Scytodes imbituba
status

new species

Scytodes imbituba   new species

Figs. 147–152 View FIGURES 141 – 152. 141 – 146

Type Material: Holotype: male from Praia do Rosa, Imbituba   [28 ° 13 ' S; 48 ° 40 ' W], Santa Catarina, Brazil, 8–15 February 1998, A.B. Bonaldo, deposited in MCN 28994 View Materials .

Paratypes: BRAZIL. Paraná: Capitão Leônidas Marques [25 º 29 ’ S; 53 º 36 ’ W], 1 Ƥ, 25 February 1993, A.B. Bonaldo ( MCN 23154 View Materials ). Santa Catarina: Imbituba   [28 ° 13 ' S; 48 ° 40 ' W] (Praia do Rosa), 13 1 Ƥ, 8–15 February 1998, A.B. Bonaldo ( IBSP 96967; MCN 28994 View Materials ).

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

Diagnosis. Scytodes imbituba   n.sp. is distinguished from the remaining Neotropical Scytodes   by the serrated, dorsally pointed sclerotized process in the male palp ( Figs. 148, 150 View FIGURES 141 – 152. 141 – 146 ) and by the sinuous, sclerotized, lateral margins of the single hyaline pocket in the female epigynum ( Fig. 152 View FIGURES 141 – 152. 141 – 146 ).

Description. Male (Holotype, MCN 28994 View Materials ). Carapace orange with brown pattern as shown on Fig. 147 View FIGURES 141 – 152. 141 – 146 . Chelicerae yellow with dorsal, longitudinal brown stripe. Pedipalps yellow. Palpal tibiae with prolateral brown stain. Labium and endites pale yellow, slightly darker at base. Sternum cream coloured with triangular brown stains in front of each coxae. Legs yellow, except patella I brown. Tibiae I-IV with dark brown distal ends. Abdomen gray with black pattern ( Fig. 147 View FIGURES 141 – 152. 141 – 146 ). Total length 3.1. Carapace slightly domed, 1.6 long, 1.4 wide. Eye diameters: PME 0.10, ALE 0.12, PLE 0.12. Lateral eyes on a tubercle. Chelicerae with subapical hyaline keel and inconspicuous stridulatory ridges. Labium 0.14 long, 0.20 wide. Sternum 0.90 long, 0.74 wide. Leg measurements: I: femur 3.8, patella 0.5, tibia 4.1, metatarsus 5.0, tarsus 0.7, total 14.1; II: 2.7, 0.5, 2.8, 3.1, 0.6, 9.7; III: 1.7, 0.5, 1.5, 1.9, 0.5, 6.1; IV: 2.8, 0.5, 2.3, 2.7, 0.6, 8.9. Palpal femur with stridulatory pick short and stout on triangular and projected socket. Cymbium with pair of strong distal spines ( Fig. 148 View FIGURES 141 – 152. 141 – 146 ). Bulb 0.60 long, medially constricted. Distal region with prolateral, concave region ( Fig. 148 View FIGURES 141 – 152. 141 – 146 ), retrolateral slightly conical projection and dorsally pointed sclerotized process ( Fig. 149–150 View FIGURES 141 – 152. 141 – 146 ). Abdomen 1.5 long, 1.2 wide, covered with slender hairs.

Female (Paratype, MCN 28994 View Materials ). Coloration pattern as in male. Total length 4.2. Carapace domed, 2.1 long, 1.9 wide. Eye diameters: PME 0.14, ALE 0.12, PLE 0.14. Lateral eyes on a tubercle. Chelicerae as in male. Labium 0.16 long, 0.24 wide. Sternum 1.12 long, 0.90 wide. Leg measurements: I: femur 2.9, patella 0.5, tibia 3.1, metatarsus 3.5, tarsus 0.6, total 10.6; II: 2.1, 0.5, 2.2, 2.6, 0.6, 8.0; III: 1.6, 0.5, 1.2, 1.6, 0.5, 5.4; IV: 2.3, 0.5, 2.1, 2.2, 0.6, 7.7. Palpal femur as in male. Epigynum with triangular, slightly curved positioning ridges, separated from each other by their width ( Fig. 151 View FIGURES 141 – 152. 141 – 146 ). Vulva with large, irregular, spermathecae, on short and very slender stalk, anterior to single large hyaline pocket with sinuous, sclerotized, lateral areas ( Fig. 152 View FIGURES 141 – 152. 141 – 146 ). Abdomen 2.1 long, 1.9 wide, as in male.

Variation. Two males: femur I 3.6–3.8; bulb 0.56–0.60.

Distribution. Atlantic Forest. Known from the states of Paraná and Santa Catarina.

IBSP

Instituto Biologico de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Scytodidae

Genus

Scytodes