Tonton sapalo, Passanha, Victor, Cizauskas, Igor & Brescovit, Antonio D., 2019

Passanha, Victor, Cizauskas, Igor & Brescovit, Antonio D., 2019, A new genus of Micromygalinae (Araneae, Microstigmatidae) from Brazil, with transfer of Masteriaemboaba Pedroso, Baptista & Bertani, 2015 and description of six new species, ZooKeys 814, pp. 1-32 : 14-16

Tonton sapalo sp. n. Figures 9, 13

Masteria sp.: De Maria et al. 2009: 219 (examined, misidentification).

Types.

Male holotype from RPPN Mata Samuel de Paula, 20°0'04"S, 43°52'16"W, Nova Lima, Minas Gerais, Brazil, deposited in UFMG 2520; female paratype, with same data, deposited in UFMG 2521.

Other material examined.

BRAZIL. Minas Gerais, Nova Lima, RPPN Mata Samuel de Paula (20°0'2"S, 43°52'14"W), 2♂, no more data (UFMG 2844; MEV; photos).

Etymology.

The specific name is an arbitrary combination of letters.

Diagnosis.

Males of Tonton sapalo sp. n. are similar to the other species in the genus with the piriform palp bulb, but differ by a strong basal curvature on the embo lus and the embolus apex slightly flat and digitiform (Fig. 9 C–G). Females resemble T. emboaba by the similar internal lobe of the spermathecae, but differ by the narrow internal lobe of the spermathecae and longer external lobe (Fig. 9H).

Description.

Male (Holotype). Coloration uniformly yellowish. Total length 2.32. Carapace 1.14 long, 0.88 wide. Abdomen 1.18 long. Fovea 0.11. Clypeus 0.03. Eyes: six, the lateral vestigial, PME on a slightly elevated basis, ALE 0.06, PME 0.03, PLE 0.06 (Fig. 9A). Labium 0.12 long, 0.22 wide. Sternum 0.56 wide, 0.70 long. Serrula in 3-4 rows of the teeth clumped in series. Palp: femur 0.65/ patella 0.34/ tibia 0.59/ tarsus 0.34/ total 1.92. Leg I femur 0.85/ patella 0.50/ tibia 0.62/ metatarsus 0.49/ tarsus 0.37/ total 2.83; II 0.75/ 0.41/ 0.46/ 0.39/ 0.34/ 2.35; III 0.67/ 0.36/ 0.46/ 0.46/ 0.41/ 2.36; IV 0.85/ 0.46/ 0.65/ 0.69/ 0.49/ 3.14. Leg formula 4132. Spination: palp tibia p2, tarsus d5ap; leg I tibia v3-3ap, metatarsus v3ap; II tibia v3-2ap, p1, metatarsus v1-3ap, p1; III patella p2, r1, tibia d1, v3-3ap, p2, r1, metatarsus d1, v1-3ap, p1, r2; IV patella p1, r1, tibia d1, v2-3ap, p2, r3, metatarsus d2, v1-3ap, p2, r2. Tibia I with three apical ventral spines. Palpal tibia two times the size of cymbium, with the bulb resting in a ventral depression. Cymbium as long as wide with a short prolateral lobe, with five apical spines (Fig. 9 C–E). Bulb piriform, embolus as long as the tegulum (Fig. 9 C–G). PLS basal, medial and apical segments 0.34, 0.24, 0.2 long.

Female (Paratype). Coloration as in male. Total length 3.04. Carapace 1.46 long, 1.1 wide. Abdomen 1.58 long. Fovea 0.12. Clypeus 0.04. Eyes as in male, ALE 0.07, PME 0.05, PLE 0.08. Labium 0.14 long, 0.18 wide. Sternum 0.7 wide, 0.8 long. Serrula as in male. Palp: femur 0.78/ patella 0.38/ tibia 0.52/ tarsus 0.52/ total 2.2. Leg I femur 0.94/ patella 0.59/ tibia 0.65/ metatarsus 0.49/ tarsus 0.41/ total 3.08; II 0.85/ 0.55/ 0.59/ 0.46/ 0.42/ 2.87; III 0.78/ 0.49/ 0.55/ 0.55/ 0.49/ 2.86; IV 1.04/ 0.56/ 0.72/ 0.72/ 0.52/ 3.56. Leg formula 4123. Spination: palp tibia v4-1ap, tarsus v2; leg I patella p1, tibia v3-2ap, p1, metatarsus v3-2ap, p1; II patella p2, tibia v3-3ap, p2, metatarsus v3-2ap, p1; III patella d2, v1, p2, tibia d2, v1-3ap, p2, r2, metatarsus d2, v2-3ap, p1, r2; IV patella d1, v1, p1, r1, tibia d1, v2-3ap, p2, r2, metatarsus d4, v2-3ap, p1, r1. Genitalia with internal lobe long with globous apex, external lobe connected to a basis and globous apex, glands in both lobes, scattered irregularly (Fig. 9H). PLS: basal, medial and apical (lost) segments, 0.46, 0.16 long.

Natural history.

The specimens were collected in the litter with pitfall traps.

Distribution.

Known only from the type locality (Fig. 13).