Matinta silvae
Creators: name: Matos, Tainá D. S.
name: Ruiz, Gustavo R. S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Matinta
Matinta silvae

description: Matinta silvae (Crane, 1943)
Figs 15–18, 38–39, 47, 53, 56–57, 61, 71–72, 85–86
Mago silvae Crane 1943: 136, figs 4A–E (Male holotype from Kartabo, Guyana, II–V.1924, deposited in AMNH, not examined).
Matinta silvae: Ruiz et al., 2019: 136; World Spider Catalog, 2023.
Note. Crane (1943) had the idea that the structures of the male palp would change (e.g. embolus length) towards the end of the life of a male spider. This led her include different species in the type series of M. silvae. Fortunately, she gave a drawing of the palp of the male holotype in ventral view (Crane 1943: fig. 4C), which allowed the identification of the species in this study without the need of going through the entire type series.
Material examined. FRENCH GUIANA: Réserve Naturelle National de la Trinité (4.583⁰N 53.3⁰W): 1♁ 2♀, XII.2010, C. Courtial leg. (MNHN).
Diagnosis (updated). The male of M. silvae is similar to those of the species within the vicana species-group, especially those of M. vicana, M. fonsecai and M. pereirae for not having mastidia on the chelicerae, and for having a bump on the retrolateral, proximal portion of palpal tibia, and for the prolateral portion of tegulum (embolus base) strongly asymmetrical proximally when compared to the retrolateral portion. Matinta silvae can also be distinguished from those for having a long, not-bifid RvTA (Figs 38–39, 47, 53). The male also resembles those of M. fonsecai and M. aragog for having a bifid embolus tip (developed membranous portion, see Figs 38–43). From M. aragog, the male of M. silvae can be distinguished for having joint prolateral cheliceral teeth, no bump on fang, no mastidia, besides the more elongated RvTA and elliptical bulb (more rounded in M. aragog). The female differs from those of the other species in which females are known (acutidens species-group, M. fasciata, M. maddisoni, M. opiparis, M. pardo and M. steindachneri) for combining oblique copulatory openings and straight, longitudinal copulatory ducts leading to the posterior spermathecae (Figs 56–57, 61).
Redescription. Male (Figs 15–16). Total length: 5.13. Carapace dark brown with white scales behind fovea, 3.41 long, 2.60 wide and 1.34 high. Ocular area 1.50 long, laterally delimited by tuft of white scales. Anterior eye row 2.43 and posterior 2.19 wide. Chelicera dark brown, with no mastidion or keel, with paracondylic projection (Fig. 71, arrow); PMT: 2, RMT: 4, PIMT: 4, RIMT: 3 (Fig. 85). Palp (Figs 38–39, 47, 53) dark brown. Sternum yellow. Legs 1342; I: dark brown; II–IV: femur yellow with dark brown tip; patella light brown; tibia light brown with dark brown tip; metatarsus and tarsus yellow. Leg length I 13.14 (femur: 3.36; patella: 1.86; tibia: 4.07; metatarsus: 2.36; tarsus: 1.49); II 8.94 (2.87; 1.58; 2.30; 1.09; 1.10); III 10.08 (3.60; 1.43; 2.41; 1.52; 1.12). IV 9.50 (3.47; 1.32; 2.46; 1.15; 1.10). Leg spination: femur I d1-1-1, p0-0-1, r0; II d1-1-1, p0-0-2, r0-0-2; III d1-1-1, p0-1-2, r0-0-1; IV d1-1-1, p0-0-1, r0-0-1; patella I–II p0-1-0; r0; III–IV p0-1-0, r0-1-0; tibia I v2-2-2, p1-0-1, r0; II v1r-2-2, p1-1-0, r0; III v1p-0-2; p1-0-1, r1-0-1; IV v2-1r-1p; p0-1-1, r1-1-1; metatarsus I–II v2-2; III v2-2, p1-0-2, r1-0-2; IV v2-2, p1-0-2, r1-1-2. Abdomen dorsally cream-colored with narrow black spots on the anterior part forming a small cream-colored stripe and with three pairs of irregular brown marks (Fig. 15); ventrally with a wide longitudinal dark brown stripe (Fig. 16). Spinnerets brown.
Female (Figs 17–18). Total length: 6.74. Carapace yellow, 3.28 long, 2.39 wide and 1.82 high. Ocular area 1.73 long, reddish. Anterior eye row 2.16 and posterior 1.99 wide. Chelicera dark brown (Fig. 72); PMT: 2, RMT: 4, PIMT: 4, RIMT: 3 (Fig. 86). Palp yellow. Sternum yellow. Legs 3412, all yellow. Leg length: I 5.85 (femur: 1.77; patella: 1.10; tibia: 1.49; metatarsus: 0.86; tarsus: 0.63); II 5.37 (1.74; 0.97; 1.28; 0.79; 0.59); III 6.23 (2.33; 0.79; 1.40; 1.07; 0.64); IV 6.04 (2.07; 0.61; 1.44; 1.27; 0.65). Leg spination: femur I d1-1-1, p0-0-2, r0; II d1-1-1, p0-0-2, r0-0-1; III d1-1-1, p0-1-2, r0-0-1; IV d1-1-1, p0-0-1, r0-0-1; patella I–II 0; III–IV r0-1-0; tibia I v2-2-2, p0-0-1, r0; II v1r-2-2, p0-0-1, r0; III v1p-0-2; p0-1-1, r1-1-1; IV v1p-0-1r; p0-1-1, r1-1-1; metatarsus I–II v2-2; III v2-2, p1-0- 2, r2-0-2; IV v1p-0-2, p1-0-2, r1-1-2. Abdomen as in male. Epigyne (Figs 56–57, 61) with wide posterior coupling pocket, a recurved keel forming a depression anterior to copulatory openings and a pair of small depressions beside the openings. Spinnerets cream-colored.
Distribution. Known from Guyana and French Guiana.
description: Published as part of Matos, Tainá D. S. & Ruiz, Gustavo R. S., 2023, On the taxonomy of the jumping spider genus Matinta Ruiz & Maddison, 2019, with a taxonomic revision of the vicana species-group (Araneae: Salticidae: Amycini), pp. 126-150 in Zootaxa 5343 (2) on page 131, DOI: 10.11646/zootaxa.5343.2.2, http://zenodo.org/record/8324346