Ibyacerina caparao, new species

(Figs. 5–9)

Adult male. General color (in alcohol) brown; Antennae, palps, and legs golden brown. Forewing length 6.0 mm. Hind wing length 4.7–5.0 mm. Length of body 4.25–4.50 mm (n = 15).

Male genitalia. Segment IX, in lateral view, annular and longitudinally short; with small posterolateral protuberance on each side above inferior appendage and broader posterolateral area below preanal appendage bearing 3 or 4 setae (Fig. 5); in dorsal view, short, sub-quadrangular, posterior margin slightly produced posterad laterally and concave mesally (Fig. 6). Preanal appendages slender, digitate, shorter than tergum X, with scattered short setae and blunt apices; originating from single base together with small mesal process half as long as preanal appendages and with bifid apex (Fig. 6). Tergum X, in dorsal view, broad, subquadrate, heavily sclerotized and wider at truncate posterior margin (Fig. 6); in lateral view dorsoventrally flattened (depressed), saddle-like, slightly wider basally, apex upturned and subtruncate, with small setae at apex (Fig. 5); longitudinal carina on each ventrolateral margin (Figs 5, 6). Inferior appendages each divided into three lobes: basoventral lobe short, rounded, setose; mesal lobe elongate, slightly compressed and broader at base, with apex narrowed before tip and curved slightly lateroventrad; dorsal lobe long, digitate, setose, compressed and wider apically in lateral view (Fig. 5); in ventral view, basoventral lobe wide at base, rounded apically, protruding, and very setose; mesal lobe flat, blade-like, with apex narrowed subapically and blunt apically; dorsal lobe long, digitate and setose subapically (Fig. 7). Phallic apparatus, in lateral view, tubular, curved slightly ventrad; with pair of slender apicolateral processes curved slightly dorsolaterad (Fig. 8); endotheca membranous, with U-shaped phallotremal sclerite (Figs 8, 9).

Female and immature forms: unknown.

Holotype male: BRAZIL: Minas Gerais: Alto Caparaó, Parque Nacional do Caparaó, 1st order tributary of Rio José Pedro, S 20°25’00.50”, W 41°49’19.00”, 2154 m. 19.i.2014, A.P.M. Santos & A.L. R. Silva, leg. (DZRJ5419).

Paratypes: Same data as holotype, 9 males (DZRJ5420) and 3 males (MZSP); same data as holotype, 1 male (DZRJ5422, DNA voucher ENT 1812); same locality as holotype except, 12–14.i.2015, Malaise trap. J.L. Nessimian, A.L.H. Oliveira, S.P. Gomes & C. Portela leg. 1 male (DZRJ5421).

Etymology: The epithet caparao, a noun in apposition with unchanging gender, refers to the name of the mountain range (Serra do Caparaó) where the type specimens of the new species were collected.

Distribution and biology: Brazil (Minas Gerais state). Specimens of Ibyacerina caparao new species were collected in a hygropetric habitat, near a wall with water splashes of a 1st order tributary of Rio Jose Pedro at 2,154 m a.s.l. in Parque Nacional do Caparaó, on the trail to Pico da Bandeira, the 3rd highest mountain in Brazil. This creek flows over bedrock at a depth of approximately 5–10 cm (Figs 10A–10C). Specimens were collected flying during the day.