Tonton emboaba (Pedroso, Baptista & Bertani) 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 : 19-21

Tonton emboaba (Pedroso, Baptista & Bertani) comb. n. Figures 12, 13

Masteria emboaba Pedroso, Baptista & Bertani, 2015: 60 (Holotype male from Serra da Gandarela, Caeté (20°01'40"S, 43°40'52"W, 1484 m a.s.l.), Minas Gerais, Brazil, May 2011, M.E. Bichuette leg., deposited in MNRJ 4540 (not found, not examined). Paratypes: two females and one immature from same locality and data, deposited in MNRJ 4540); two females and ten immature from Caeté, next to cave AP_09 (20°01'33"S, 43°40'54"W), 1439 m a.s.l., 09.VII.2011, Equipe Aracno leg., deposited in MNRJ 4388; one immature from Santa Bárbara, next to cave AP_31 (20°02'14"S, 43°40'38"W, 1443 m a.s.l., 08.VII.2011, Equipe Aracno leg., deposited in MNRJ 4380 (not found, not examined).

Other material examined.

BRAZIL. Minas Gerais, Caeté, Cave AP-10 (20°1'34"S, 43°40'56"W), Am. 380, 1♀, 14-21.XI.2008 (IBSP 196207); Cave AP-10 (20°1'34"S, 43°40'56"W), Am. 145, 6♀, 19-23.VII.2008 (IBSP 196208); Cave AP-22 (20°2'10"S, 43°41'19"W), Am. 152, 1♀, 19-23.VII.2008 (IBSP 196209); Cave AP-22 (20°2'10"S, 43°41'19"W), Am. 311, 1♀, 14-21.XI.2008 (IBSP 196210); Cave AP-15 (20°1'41"S, 43°40'53"W), Am. 197, 2♀, 19-23.VII.2008 (IBSP 196211); Cave AP-12 (20°1'32"S, 43°40'53"W), Am. 463, 1♂ 1♀, VII.2008 (IBSP 196212; detached epigynum); Cave AP-16 (20°1'41"S, 43°40'53"W), Am. 183, 1♀, 19-23.VII.2008 (IBSP 196213); Cave AP-09 (20°1'34"S, 43°40'55"W), Am. 104, 1♀, 19-23.VII.2008 (IBSP 196214); Cave AP-01 (20°0'47"S, 43°40'25"W), Am. 131, 2♀, 19-23.VII.2008 (IBSP 196215); Cave AP-39 (20°2'15"S, 43°40'39"W); Am. 63, 1♀, 19-23.VII.2008 (IBSP 196216; detached epigynum); Cave AP-13 (20°1'41"S, 43°40'52"W), Am. 96, 1♀, 19-23.VII.2008 (IBSP 196217; detached epigynum); Cave AP-16 (20°1'41"S, 43°40'53"W), Am. 18, 1♂, 19-23.VII.2008 (IBSP 196218; MEV); Cave AP-16 (20°1'41"S, 43°40'53"W), Am. 631, 1♀, 19-23.VII.2008 (IBSP 196223); Cave AP-16 (20°1'41"S, 43°40'53"W), Am. 395, 1♀, 19-23.VII.2008 (IBSP 196225); Cave AP-47 (20°2'12"S, 43°41'32"W), Am. 44, 1♀ 2imm., 12-21.XI.2009 (IBSP 196221); Cave AP-47 (20°2'12"S, 43°41'32"W), Am. 47, 1♀ 2 imm., 12-21.XI.2009 (IBSP 196228); Cave AP-54 (20°1'41"S, 43°40'53"W), Am. 06, 6♀ 3 imm., 12-21.XI.2009 (IBSP 196229); Cave AP-47 (20°2'12"S, 43°41'32"W), Am. 210, 6♀ 2 imm., 13-17.IV.2010 (IBSP 196230); Cave AP-58 (20°1'35"S, 43°41'9"W), Am. 162, 1♀, 12-21.XI.2009, (IBSP 196233); Cave AP-33 (20°2'16"S, 43°40'39"W), Am. 300, 1♂ 1♀, 14-21.XI.2008 (IBSP 196219; MEV), all collected by R. Bessi et al.; Cave AP-25 (20°2'43"S, 43°40'57"W), Am. 652, 1♀, 02-07.I.2012, Karina leg. (IBSP 196222); Cave AP-28 (20°2'45"S, 43°40'58"W), Am. 443, 1♀, 30. VI– 15.VII.2011, Karina leg. (IBSP 196226); Cave AP-08 (20°1'35"S, 43°40'47"W), Am. 604, 1♂, 12-15.XII.2011, Juliana leg. (IBSP 196224); Cave AP-12 (20°1'32"S, 43°40'53"W), Am. 488, 1 imm., 30. VI– 15.VII.2011, Luiza leg. (IBSP 196231); Cave AP-18 (20°1'44"S, 43°41'0"W), Am. 405, 1♀, 30. VI– 15.VII.2011, Luiza leg. (IBSP 196232); Cave AVG 48 (19°49'20"S, 43°41'43"W), Am. 5, 3♀, 02.IX.2014, M.P.A. Oliveira leg. (IBSP 198497); Santa Bárbara, Cave AP-25 (20°2'43"S, 43°40'57"W), Am. 438, 1♀, 30. VI– 08.VII.2011, R. Bessi et al. leg. (IBSP 198499); Rio Acima, Cave VG-01 (20°9'9"S, 43°49'0"W), Am. 154, 5♀, 2-10.VIII.2011, I. Cizauskas leg. (IBSP 198498); Cave AP-67 (20°0'54"S, 43°40'36"W), Am. 23, 2 imm., 12-21.XI.2009, R. Bessi leg. (IBSP 196206).

Diagnosis.

Males of T. emboaba have only two small spines on apex of tibia I and embolus with a curvature on basis (Fig. 12 B-D); they are close to males in other species of the genus by the piriform bulb, but can be easily distinguished by the curvature on embolus basis (Fig. 12B-D). Females present the spermathecae with the external lobes small in relation to the internal lobes (Fig. 12G), and are related to those of T. matodentro by the similar internal lobe of the spermathecae, but differ by the short external lobe (Fig. 12G).

Description.

Male and female described by Pedroso et al. 2015: 60, figs 1-16.

New data: male with six eyes, the lateral eyes are vestigial, AME absent. ALE 0.02, PME 0.04, PLE 0.02 (Fig. 12A). Serrula with 4-5 rows of clumped teeth in series. Palp with excavated distally tibia, tegulum piriform and embolus with half of length of tegulum (Figs 12 C–F). Female with eyes as in male, ALE 0.02, PME 0.05, PLE 0.02. Serrula as in male. Genitalia with bilobed spermathecae, with projected internal lobe, with elongated duct, longer than the external lobe; external lobe rounded; glands in both lobes, scattered irregularly and narrow basis of genitalia (Fig. 12G).

Remarks.

In the original description from Pedroso et al. (2015) this species was included in Dipluridae , in the genus Masteria . After analyzing a large amount of material from the type locality, we conclude that the species belongs to Microstigmatidae : Micromygalinae by having serrula arranged in teeth clumped in a series of rows (Fig. 12B), and an integument with scales. With MEV photography we also observed the presence of six eyes and not two, as originally described, with the lateral eyes being almost vestigial, and the posterior median clearly visible (Fig. 12A).

Distribution.

Only known from the caves on canga areas of the Caeté and Santa Bárbara, in the state of Minas Gerais (Fig. 13).