Tonton ipiau, 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 : 16-17

Tonton ipiau sp. n. Figures 10, 14

Types.

Male holotype and female paratype from Ipiaú, (14°8'20"S, 39°44'52"W), Bahia, Brazil, I.2007, C. Máximo leg., deposited in IBSP 14522 and IBSP 14520, respectively.

Other material examined.

BRAZIL. Sergipe: Itabaiana, Estação Ecológica da Serra de Itabaiana (10°40'S, 37°25'W), 1♂, 14-20.IX.1999, A.D. Brescovit et al. (IBSP 13206; MEV); 1♀, 14-20.IX.1999 (IBSP 13217); 1♂, 14-20.IX.1999 (IBSP 13207); 1♂, 14-20.IX.1999 (IBSP 13205); Santa Luzia do Itanhy, Mata do Crasto (11°21'7"S, 37°26'57"W), 1♂, 9-13.IX.1999 (IBSP 198560), all collected by A.D. Brescovit et al.; Bahia: Ipiaú (14°7'58"S, 39°45'10"W), 1♀, I.2007, C. Máximo leg. (IBSP 14521; MEV); 1♂, I.2007, C. Máximo leg. (IBSP 14523; MEV); Lafaiete Coutinho (13°39'23"S, 40°13'17"W), 1♂, VII.2006-VII.2007, J. Romão leg. (IBSP 14734); 1♀, VII.2006-VII.2007, J. Romão leg. (IBSP 14741); Wenceslau Guimarães (13°38'39"S, 39°45'36"W), pitfall trap QD53, 1♂, 14-21.I.2011, C. Leite leg. (IBSP 198556); Wenceslau Guimarães (13°38'5"S, 39°40'6"W), pitfall trap QD47, 2♀, 14-21.I.2011 (IBSP 198557); pitfall trap QD 43, 1♂, 14-21.I.2011 (IBSP 198558); pitfall trap QD 17, 1♀, 14-21.I.2011 (IBSP 198559), all collected by C. Leite leg.; Jaguaripe (13°6'53"S, 38°54'6"W), pitfall trap QD98, 2♂, 18. II– 02.III.2011 (IBSP 198551); pitfall trap QD89, 1♀, 18. II– 02.III.2011 (IBSP 198552); pitfall trap QD55, 2♂, 18. II– 02.III.2011 (IBSP 198553); pitfall trap QD89, 1♂, 18. II– 02.III.2011 (IBSP 198554); pitfall trap QD55, 1♀, 18. II– 02.III.2011 (IBSP 198555), all collected by C. Leite.

Etymology.

The specific epithet is a noun taken in apposition and refers to the type locality.

Diagnosis.

Males of Tonton ipiau sp. n. resemble the males of other species with piriform palpal bulb, but differ by the embolus basis wide and tapering to the apex (Fig. 10 B–E). Females differ from the other species by spermathecae with long and narrowed lobes with similar size (Fig. 10 F-G).

Description.

Male (Holotype). Coloration uniformly yellowish. Total length 1.8. Carapace 0.84 long, 0.66 wide. Abdomen 0.96 long. Fovea 0.11. Clypeus 0.02. Eyes: six, the lateral eyes are vestigial, PME largest in proportion to the other eyes, ALE 0.06, PME 0.08, PLE 0.05 (Fig. 10A). Labium 0.06 long, 0.16 wide. Sternum 0.44 wide, 0.5 long. Serrula as in T. sapalo sp. n. Palp: femur 0.43/ patella 0.26/ tibia 0.33/ tarsus 0.24/ total 1.26. Leg I: femur 0.67/ patella 0.33/ tibia 0.43/ metatarsus 0.38/ tarsus 0.34/ total 2.15; II 0.58/ 0.34/ 0.37/ 0.33/ 0.32/ 1.94; III 0.51/ 0.26/ 0.37/ 0.39/ 0.33/ 1.86; IV 0.72/ 0.35/ 0.54/ 0.52/ 0.39/ 2.52. Leg formula 4123. Spination: palp tibia v3, tarsus d5ap; leg I: tibia v1-3ap, metatarsus v3-3ap; II: patella v1, p1, tibia v2-3ap, p2, r2, metatarsus v3-2ap, p2; III: patella p2, r1, tibia d2, v2-2ap, p2, r1, metatarsus d2, v2-3ap, p3, r1; IV: patella v2, p1, tibia d2, v2-2ap, p2, r2, metatarsus d2, v3-3ap, p2, r1. Tibia I with three apical ventral spines. Palpal tibia with 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. 10B, E). Bulb piriform, tegulum tapering to the embolus, embolus as long as the tegulum, with light medial curvature, apex of embolus rounded (Fig. 10 B–E). PLS basal, medial and apical segments 0.32, 0.24, 0.21 long.

Female (Paratype). Coloration as in male. Total length 2.22. Carapace 1.06 long, 0.9 wide. Abdomen 1.16 long. Fovea 0.08. Clypeus 0.06. Eyes as in male, ALE 0.08, PME 0.05, PLE 0.03. Labium 0.1 long, 0.24 wide. Sternum 0.6 wide, 0.64 long. Serrula as in male. Palp: femur 0.59/ patella 0.37/ tibia 0.43/ tarsus 0.46/ total 1.85. Leg I: femur 0.99/ patella 0.52/ tibia 0.65/ metatarsus 0.50/ tarsus 0.46/ total 3.12; II 0.83/ 0.47/ 0.46/ 0.42/ 0.37/ 2.55; III 0.72/ 0.41/ 0.43/ 0.46/ 0.37/ 2.39; IV 0.91/ 0.46/ 0.69/ 0.59/ 0.46/ 3.11. Leg formula 1423. Spination: palp patella v1, tibia v4-2ap, tarsus v7; leg I: patella p1, tibia v3-2ap, p1, metatarsus v5-3ap, p1; II: patella p2, tibia v3-2ap, p2, metatarsus v3-3ap, p2; III: patella v1, p2, r1, tibia d2, v3-3ap, p2, r1, metatarsus d2, v2-3ap, p2, r2; IV: patella p1, r1, tibia d3, v2-3ap, p1, r2, metatarsus d2, v1-3ap, p1, r2. Genitalia with spermathecae sharing the basis, slightly projected, internal lobe little longer than the external lobe, glands in both lobes, scattered irregularly (Fig. 10G-H). PLS: basal, medial and apical segments, 0.4, 0.2, 0.3 long.

Variation. Some females can be have the external lobe slightly sinuous (Fig. 10F).

Natural history.

All specimens were collected in the litter with pitfall traps.

Distribution.

Atlantic forest, in the states of Sergipe and Bahia (Fig. 13).