Grismadox armatus ( Mello-Leitão, 1922 ), Silva-Junior & Pett & Bonaldo, 2025

Grismadox armatus ( Mello-Leitão, 1922) comb. nov.

Figs 3A, C View FIGURE 3 , 6A–E View FIGURE 6 , 7A–K View FIGURE 7

Apochinomma armatum Mello-Leitão, 1922: 48 View in CoL ( holotype ♀, BRAZIL: Pinheiro [ Rio de Janeiro], MNRJ-740, examined).

Remarks. Apochinomma armatum clearly belongs to Grismadox due to the vulva with the copulatory ducts fused anteriorly to ST II ( Figs 6C, D View FIGURE 6 , 7K View FIGURE 7 ). Males also present vRTA and dRTA on the palp and spiniform AS II, diagnostic characters of the genus ( Fig. 7I View FIGURE 7 ).

Diagnosis. Males of G. armatus comb. nov. resemble those of G. elsneri by having thin embolus ( Fig. 7G, H View FIGURE 7 ), but differ by tibia I ventral spination 2-2 ( vs. 3- 2 in G. elsneri ), dRTA larger than vRTA ( vs. same sized in G. elsneri ) and by the absence of keels in the embolus ( vs. present in G. elsneri ) ( Figs 7G View FIGURE 7 ; 14G, H View FIGURE 14 ; Perger et al. 2022: figs 3C–D). Females of G. armatus comb. nov. resemble those of G. elsneri by tibia I ventral spination 3-2, coxae II–IV paler than I, and the presence of a ventral groove above the CO, but differs by the deep ventral groove above the CO ( vs. shallow in G. elsneri ), CO anteriorly oriented ( vs. anterolaterally in G. elsneri ), and CD as long as ST II ( vs. CD smaller than ST II in G. elsneri ) (cf. Figs 3A, C View FIGURE 3 , 6C–D View FIGURE 6 , 7J–K View FIGURE 7 and Perger et al. 2022: figs 5A–C).

Description. Male (IBSP-72568). Total length 5.06. Carapace 2.52 long, 1.27 wide. Sternum 1.09 long, 0.70 wide.Abdomen 2.61 long, 1.21 wide. Eye diameters:AME 0.08, ALE 0.06, PME 0.06, PLE 0.06. Eye interdistances: AME-AME 0.08, AME-ALE 0.04, ALE-PLE 0.16, PME-PME 0.15, PME-PLE 0.12, AME-PME 0.13. Carapace dark brown, densely covered with feathery hairs. Endites and labium dark brown, with yellowish prolateral margin ( Fig. 7A, B View FIGURE 7 ). Chelicerae brown, two promarginal teeth of different sizes (distal larger than proximal) and two equal retromarginal teeth. Sternum dark brown, shield-shaped ( Fig. 7C View FIGURE 7 ). Abdomen with weak constriction, dorsal scute dark brown, covered by feathery hairs forming pattern of three white bands; ventral scute rectangular-shaped, tracheal scute present ( Fig. 7A, B View FIGURE 7 ). Coxae II and III yellowish, I and IV dark. Trochanters following color of coxae, femora I and II yellowish, black bands along edges, proximal area darker, particularly on femur I, patellae, tibiae, metatarsi and tarsi yellowish. Legs III and IV with femora brownish, patellae yellow with distal area brown, tibia III yellowish with pro- and retrolateral margins brown, tibia IV dark brown with distal part yellow, metatarsi and tarsi III yellowish and metatarsi IV dark brown with distal part yellow, tarsi IV yellowish. Leg measurements: I 1.28 / 1.18 / 0.37 / 1.06 / 0.82; II 1.07 / 0.89 / 0.37 / 0.79 / 0.75; III 1.15 / 0.96 / 0.38 / 0.97 / 0.62; IV 1.72 / 1.60 / 0.51 / 1.88 / 0.86. Spination: I femur do 0-1-1-0, pl 0-0-1; tibia ve 2-2; metatarsus ve 2-2; II femur do 0-1-1-0, pl 0-0-1; tibia ve 2-2; metatarsus ve 2-2; III femur do 1-1-1; pl 1-0-1, rl 0-0-1; tibia pl 0-1-1, rl 0-1-1, ve 0-0-1; metatarsus pl 1-1-0-1, rl 1-1-0-1, ve 2-2-2-1; IV femur do 1-0-1-1, pl 0-0-0-1, rl 0-0-0-1; tibia do 0-0-1, pl 1-0-1, rl 1-0-1, ve p 1- 0-1; metatarsus pl 1-1-0-1, rl 1-1-0-1, ve 2-2. Palp with vRTA smaller than dRTA, with tip of latter distally oriented, both triangular in shape. Embolus without keels ( Fig. 7G–I View FIGURE 7 ).

Female (IB-37326). Same as in male except the following: total length 7.66. Carapace 3.48 long, 1.79 wide. Sternum 1.43 long, 0.92 wide. Abdomen 3.84 long, 1.99 wide. Eye diameters: AME 0.10, ALE 0.07, PME 0.09, PLE 0.09. Eye interdistances: AME-AME 0.11. AME-ALE 0.08, ALE-PLE 0.22, PME-PME 0.20, PME-PLE 0.17, AME-PME 0.17. Sternum orange. Abdomen with small, dark brown dorsal scute ( Fig. 7D–F View FIGURE 7 ), ventrally with one large white spot in the middle. Leg measurements: I 1.80 / 1.68 / 0.62 / 1.34 / 0.97; II 1.68 / 1.53 / 0.48 / 1.18 / 0.93; III 1.70 / 1.29 / 0.54 / 1.42 / 0.79; IV 2.41 / 2.28/ 0.83 / 2.56 / 0.99. Spination: I femur do 0-1-1-0, pl 0-0-1; tibia ve 3-2; metatarsus ve 2-2; II femur do 0-1-1-0, pl 0-0-1; tibia ve 2-2; metatarsus ve 2-2; III femur do 1-1-1; pl 1-0-1, rl 0-0-1; tibia pl 0-1-1, rl 0-1-1, ve 0-0-1; metatarsus pl 1-1-0-1, rl 1-1-0-1, ve 2-2-2-1; IV femur do 1-0-1-1, pl 0-0-0- 1, rl 0-0-0-1; tibia do 0-0-1, pl 1-0-1, rl 1-0-1, ve p 1-0-1; metatarsus pl 1-1-0-1, rl 1-1-0-1, ve 2-2. Epigynum with deep grooves above copulatory openings, CO on conical projection. ST II larger, subglobose; ST I smaller than ST II, oblong. Copulatory ducts as large as ST II and sclerotized ( Figs 3A, C View FIGURE 3 , 6C, D View FIGURE 6 , 7J, K View FIGURE 7 ).

Material examined. BRAZIL: Minas Gerais: Belo Horizonte, Estação Ecológica da UFMG [ 19°52'38"S, 43°58'16"W], 1♀, 17–21.III.2000, Alvares et al. leg. (UFMG-51) GoogleMaps ; São Paulo: São Paulo, Instituto Butantan, Laboratório de Artropodes [ 23°34'05.9"S, 46°43'01.9"W], 1♀, 5.XII.2002, D.F. Candiani leg. (IB-37326); Campus do Instituto Butantan [ 23°34'05.9"S, 46°43'01.9"W], 1♂, 8.XII.2006, Y. Passanha leg. (IB-72568); Aruja [ 23°23'02"S, 46°18'57"W], 1♀, 17.IV.2005, E.O. Machado leg. (IB-57262) GoogleMaps .

Distribution. Southeast Brazil ( Fig. 15 View FIGURES 15 ).