Tupiperla zwicki Duarte & Novaes & Bispo 2019, sp. nov.

Tupiperla zwicki sp. nov.

(Figs. 2 I–J, Figs. 7 A–C)

Material Examined. Holotype. Male. Brazil: Santa Catarina: Orleans, Rio Minador, S28°10’28’’, W49°24’36’’, 14.viii-12.x.2013, Malaise trap, LC Pinho et al. (MZSP).

Paratypes. Same data as holotype, except for: 1 male; same data, except for: 10.xi-13.xii.2013, Malaise trap, LC Pinho et al., 1 male; Brazil: Santa Catarina: Urubici, RPPN Portal das Nascentes, S28°03’12’’, W49°22’27’’, 19.viii-12.x.2013, Malaise trap, LC Pinh o et al., 1 male (at UFBA); same data, except for: Pousada N.S. Graças, S27°59.762, W49°34.040, 06-10.i.2010, HF Mendes, LC Pinho & RA Moretto col., 1 male.

Measurement. Holotype, male: head width, 0.93 mm; pronotum width, 0.78 mm; pronotum length, 0.61 mm; forewing length, 7.5 mm; hind wing length, 6.4 mm; 14 cercomeres.

Paratypes: Males (n= 4): head width, 0.97–1.2 mm; pronotum width, 0.7–0.9 mm; pronotum length, 0.6–0.8 mm; forewing length, 8.1–9.4 mm; hind wing length, 6.8–8.2 mm; 13–14 cercomeres.

Description. Tupiperla zwicki sp. nov. is a medium sized species. General color brownish to ochraceous. Head brownish with a lighter area in front of the coronal fork, and laterally to the eyes; ocelli and eyes black (Fig. 2I); clypeus and labrum brownish; lateral part of the head, behind the eyes, with a distinct dark brown band. Maxillary and labial palpi ochraceous. Antenna brown. Pronotum squarish, slightly trapezoidal, light brown, with latero-anterior corners rounded, and narrower than the head (Fig. 2I). Legs light brown and covered by thin bristles; femur with disto-ventral spine present; tibia with two spurs at the distal region; tarsi with tarsomere 1 medium, tarsomere 2 short, and tarsomere 3 long. Wings membranous, light brown; forewing with weak darker patterns bordering veins and crossveins, pterostigmatic crossvein absent, RA unforked, RP forked and CuA long forked; hind wing with M3+4, near its separation from M1+2, fused with CuA in part of its length, CuA short forked, 6th anal vein fused with hind margin of wing (Fig. 2J).

Male. Abdomen brownish to ochraceous, and with paler band on abdominal terga 1–9. T10 light brown to ochraceous; laterally covered with thin bristles. T10 extension, in dorsal view, large, and with apex bifurcated (Yshaped) (Fig. 7A); in lateral view, straight dorsally, distally downcurved and ending in two large teeth (Fig. 7C). Paraprocts, in ventral view, thin, covered with thin bristles, and with distal region out curved (Fig. 7B); in lateral view, thin on base and broadening softly along the length, with ventral margin almost straight, dorsal margin slightly sinuous and darker, and apex rounded (Fig. 7C). Subgenital plate ochraceous, and ovoid-shaped (Fig. 7B). Epiproct absent.

Female and nymphs. Unknown.

Remarks. Tupiperla zwicki can be distinguished from the congeners by the shape of the paraprocts and T10 extension in males. In lateral view, T. zwicki resembles T. illiesi, however, in this species, each paraproct has a row of small teeth on dorsal margin, and the latero-distal region has a spine, while in T. zwicki there are no teeth in the dorsal margin of the paraprocts, and the distal portion is curved outwards.

Tupiperla zwicki is described based on specimens collected in municipalities of Orleans and Urubici, Santa Catarina State, Brazil. Four male specimens (including the holotype) were collected from August to January 2013, another male was collected in January 2010. Several females were collected in the same locality but are left unassociated.

Etymology. The specific name zwicki honors Prof. Dr. Peter Zwick, Schlitz, Germany for his numerous contributions to aquatic entomology, especially on the taxonomy and phylogeny of the Plecoptera.