Matinta opiparis
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 opiparis

description: Matinta opiparis (Simon, 1900)
Figs 1–14, 69–70, 82–83
Mago opiparis Simon, 1900: 58 (Male holotype from Pará, Brazil, deposited in MNHN, Paris, not examined); Galiano, 1963: 390, pl. XXVI, figs 13–14.
Matinta opiparis: Ruiz et al., 2019: 136; World Spider Catalog, 2023.
Note. This species with unusual male palp was easily identified using Galiano’s (1963: pl. XXVI: figs 13–14) illustrations. Due the new data accumulated for Amycini since Galiano’s work, we take a chance to update the diagnosis and redescribe it based on recently collected specimens.
Material examined. BRAZIL: Pará: Belém, Parque Estadual do Utinga (1.425⁰S 48.424⁰W): 1♁ 1♀, 12– 30.IV.2011, E.L.S. Costa & N.C. Bastos leg. (MPEG 38519).
Diagnosis (updated). The male of M. opiparis differs from all the other species of the genus for having a spiraled embolus (Figs 5–7, 11, 13). The female differs from those of the other Matinta species in which females are known [acutidens -group (see Patello & Ruiz 2014), M. fasciata (Mello-Leit„o, 1940), M. silvae (Crane, 1943), M. maddisoni sp. nov., M. pardo (Costa & Ruiz, 2017) and M. steindachneri (Taczanowski, 1878)] for having a T-shaped figure ventrally on the epigyne, formed by the copulatory openings and a longitudinal median septum (Figs 9, 14).
Redescription. Male (Figs 1–2). Total length: 7.53. Carapace dark brown, 3.66 long, 2.75 wide and 1.94 high. Ocular area 1.82 long. Anterior eye row 2.40 and posterior 2.24 wide. Chelicera dark brown, with no mastidion, but with a lateral keel (Fig. 69); PMT: 2, RMT: 4, PIMT: 3, RIMT: 4 (Fig. 82). Palp (Figs 5–8, 11–13) brown, with a dorsally and prolaterally curved RTA, with a ventral cusp on its middle, forming a bicusp bladed RTA, and with a conical RvTA (Figs 7–8, 12). Sternum yellow. Legs 1342; I dark brown; II–IV: femur yellow proximally and dark brown distally, other articles with alternating light brown and yellow rings. Leg length: I 7.25 (femur: 2.08; patella: 1.40; tibia: 1.95; metatarsus: 1.07; tarsus: 0.75); II 6.29 (2.07; 0.95; 1.52; 1.04; 0.71); III 7.15 (2.46; 1.07; 1.28; 1.57; 0.77); IV 7.11 (2.19; 0.93; 1.71; 1.50; 0.78). Leg spination: femur I–IV d1-1-1, p0-0-2, r0-0-1; patella I–II 0; III–IV p0-1-0; r0-1-0; tibia I v2-2-2, p1-0-1, r0; II v1r-2-2, p1-1-1, r0; III–IV v1p-0-2; p0-1-1, r1-1-1; metatarsus I–II v2-2; III v0-2-2, p1-0-2, r1-0-2; IV v0-1p-2, p1-1-2, r1-0-2. Abdomen dorsally cream-colored with a pair of narrow brown transverse stripes anteriorly, and with three pairs of irregular brown marks (Fig. 1); ventrally with a wide longitudinal dark brown stripe (Fig. 2). Spinnerets brown.
Description. Female (Figs 3–4). Total length: 8.23. Carapace yellow, 3.63 long, 2.71 wide and 1.95 high. Ocular area 2.09 long, reddish. Anterior eye row 2.34 and posterior 2.11 wide. Chelicera light brown (Fig. 70); PMT: 2, RMT: 5, PIMT: 3?, RIMT: 4? (Fig. 83). Palp yellow. Sternum yellow. Legs 3412; I: femur and patella yellow; tibia, metatarsus and tarsus light brown; II: yellow; III: articles yellow, but distally brown; IV: femur and patella yellow; tibia and metatarsus yellow, but distally brown; tarsus yellow. Leg length I 6.69 (femur: 2.13; patella: 1.20; tibia: 1.68; metatarsus: 1.03; tarsus: 0.65); II 5.83 (1.79; 0.99; 1.42; 0.95; 0.68); III 7.27 (2.45; 0.98; 1.74; 1.35; 0.75); IV 7.17 (2.37; 0.99; 1.62; 1.43; 0.76). Leg spination: femur I d1-1-1, p0-0-2; II–III d1-1-1, p0-0-2, r0-0-1; IV d1-1-1, p0-0-1, r0-0-1; patella I–IV 0; tibia I v2-2-2, p0-0-1, r0; II v1r-2-2, p0-0-1, r0; III v1p-0-2; p1-0-1, r1-1-0-1; IV v2-0-2, p1-1-1, r1-1-0-1; metatarsus I–II v2-2; III v2-2, p1-0-2, r1-0-2; IV v1p-0-2, p1-0-2, r1-1. Abdomen as in male. Epigyne (Figs 9–10, 14) with wide posterior coupling pocket; copulatory openings as large pouches, with sinuous copulatory ducts leading to posterior spermathecae. Spinnerets dark brown.
Distribution. Known only from the state of Pará (Brazil).
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 128, DOI: 10.11646/zootaxa.5343.2.2, http://zenodo.org/record/8324346