Tupirinna luctuosa Xavier & Bonaldo 2021, sp. nov.

Tupirinna luctuosa sp. nov.

Figs 7D, 12E, F

urn:lsid:zoobank.org:act: 4818231B-E7B7-4623-AD8C-E45889F9CB4C

Type material. Holotype: ♀ from Estação Ecológica de Acauã (17°08’00.7”S, 42°46’05.1”W), Leme do Prado, Minas Gerais Brazil, 18–28.II.2013, leg. P.H. Martins (UFMG 20014).

Etymology. The specific name is a Latin adjective meaning sorrowful, referring to the recent environmental tragedies of Mariana and Brumadinho, caused by the lack of maintenance of mining dams in the state of Minas Gerais.

Diagnosis. Females of Tupirinna luctuosa sp. nov. differ from those of all other species with a medially positioned copulatory opening (T. rosae sp. nov., T. regiae sp. nov. and T. coari sp. nov.) by the epigynal plate with a median sclerotization posterior to the copulatory opening (Fig. 12E, F).

Description. Female holotype (UFMG 20014). Carapace with brown stripe extending over ocular area, and black stripes laterally. Chelicerae yellow. Labium brown. Endites yellow. Sternum yellow, with borders brown and borders of anterior lateral excavations black. Legs yellow, with proximal region of lateral surfaces of patellae black; proximal and distal regions of lateral surfaces of tibiae black; distal region of metatarsi black; base of spines black on femora, tibiae and metatarsi. Abdomen dorsum grey, with one pair of longitudinal black spots in cardiac area; in median region, two pairs of black spots on each side; subsequently two black spots in middle, followed by a huge semicircular black spot connected with black contour of spinnerets; venter grey (Fig. 7D). Total length 4.89. Carapace length 2.12, width 1.82, height 0.77. Clypeus height 0.17. Eye diameters and interdistances: anterior row 0.59, posterior row 0.63, MOQ: length 0.34, anterior width 0.34, posterior width 0.34, AME 0.15, PME 0.10, ALE 0.12, PLE 0.10, AME-AME 0.10, AME-ALE 0.03, PME-PME 0.14, PME-PLE 0.10, ALE-PLE 0.03. Chelicerae: length 0.87 with 4 promarginal and 3 retromarginal teeth. Sternum length 1.23, width 1.21. II: fe 1.92, pa 0.67, ti 1.55, mt 1.64, ta 0.83. III: fe 1.98, pa 0.79, ti 1.50, mt 1.94, ta 0.88. IV: fe 2.39, pa 0.86, ti 1.95, mt 2.72, ta 1.01. Abdomen: length 2.70, width 1.86. Leg spination: No leg I. II – femur d1-1-1, p0-0-1; tibia v2-2-2; metatarsus v2-2-0. III – femur d1-1-1, p0-1-1, r0-1-1; tibia p1-0-0, r1-0-0, v2-2-0; metatarsus p1-1-0, r1-1-0, v2-2-2. IV – femur d1-1-1, p0- 1-1, r0-0-1; tibia p1-1-0, r1-1-0, v2-2-2; metatarsus p1-1-0, r1-1-0, v2-2-2. Epigynum: copulatory opening medially positioned; posterior vulval plate well developed; secondary spermathecae absent (Fig. 12E, F).

Male: Unknown.

Material examined. Only the holotype.

Distribution. Known only from the type locality, in the eastern state of Minas Gerais, Brazil (Fig. 26).