Matinta fonsecai (Soares & Camargo, 1948)

Figs 23–24, 40–41, 48, 54, 75, 84

Mago fonsecai Soares & Camargo, 1948: 440, figs 35–37 (Male holotype from Fazenda da Floresta, Matipoó river, Minas Gerais, Brazil, VIII.1919, J.P da Fonseca leg., deposited in MZUSP, not examined); Galiano, 1968: 339, figs 62–63. Matinta fonsecai: Ruiz et al., 2019: 136; World Spider Catalog, 2023.

Note. The species was identified using the illustrations and descriptions by Galiano (1968: figs 62–63).

Material examined. BRAZIL: Acre: Senador Guimard, Reserva Extrativista de Catuaba [10.067⁰S 67.633⁰W]: 1 ♁, 2003, E. Morato leg. (IBSP 161435) .

Diagnosis. The male of M. fonsecai is similar to those of the species within the vicana species-group, especially those of M. vicana, M. silvae and M. pereirae for not having mastidia, and by having a bump on the retrolateral, proximal portion of palpal tibia (Figs 34, 38, 40), and the prolateral portion of tegulum (embolus base) strongly asymmetrical proximally when compared to the retrolateral portion. It can be distinguished from those of M. vicana and M. pereirae for having a bifid embolus tip (Figs 40, 48), and from M. silvae for having a bifid, short RvTA (Figs 41, 54). The male also resembles those of M. aragog for having the bifid embolus tip (developed membranous portion), but can be distinguished for having joint prolateral cheliceral teeth, no bump on fang, no mastidia, besides the shape of tibia and palpal bulb.

Description. Male (Figs 23–24). Total length: 6.28. Carapace dark reddish-brown, 3.26 long, 2.30 wide and 1.83 high. Ocular area 1.51 long, laterally with white scales.Anterior eye row 2.12 and posterior 1.74 wide. Chelicera dark brown, with no mastidion or keel, with paracondylic projection (Fig. 75); PMT: 2, RMT: 4, PIMT: 3, RIMT: 2 (Fig. 84). Palp (Figs 40–41, 48, 54) dark brown. Sternum yellow. Legs 3412; I: dark brown; II–IV: dark brown, with the exception of proximal femur and tarsus, yellow. Leg length I 6.04 (femur: 1.86; patella: 0.95; tibia: 1.67; metatarsus: 0.99; tarsus: 0.57); II 5.72 (1.79; 0.98; 1.50; 0.92; 0.53); III 6.81 (2.40; 0.86; 1.46; 1.34; 0.75); IV 6.28 (2.15; 0.70; 1.23; 1.44; 0.76). Leg spination: femur I–II d1-1-1, p0-0-2, r0-0-1; III–IV d1-1-1, p0-1-2, r0-0-1; patella I–II 0; III–IV p0-1-0, r0-1-0; tibia I v2-2-2, p0-0-1, r0; II v1p-2-2, p0-0-1, r0; III v1p-0-2, p1-0-1, r1-1-1; IV v1p-0-2; p1-0-1, r1-1-1; metatarsus I–II v2-2; III v2-0-2, p1-0-2, r1-0-2; IV v2-0-2, p1-1-2, r1-1-2. Abdomen dorsally cream-colored with irregular light brown marks (Fig. 23); ventrally black (Fig. 24). Spinnerets light brown.

Female. Unknown.

Distribution. Known from the states of Acre and Minas Gerais (Brazil).