Mesembrinella peregrina Aldrich, 1922

(Figs 79–80, 169–170, 227, 270, 314, 358, 399, 443, 477)

Mesembrinella peregrina Aldrich, 1922: 22 . Holotype male (USNM), examined. Type locality: Espirito Santo, Brazil. [NB: the specimen is labeled as “ Mesembolia peregrina ” (see Fig. 477).]

Mesembrinella peregrina: Peris & Mariluis (1984: 262); Toma & Carvalho (1995: 136); Marinho et al. (2012: 142); Kosmann et al. (2013: 78); Wolff (2013: 121); Marinho et al. (2017: tab. 1); Cerretti et al. (2017: tab. 2).

Diagnosis. A medium-sized fly averaging 10.6 mm (10–11/5) in length. Stem vein setose dorsally; wing yellowish along costa; subcostal sclerite bare; facial ridge with short row of dark brown supravibrissal setae at base. Male frons narrow, 0.01 of head width at narrowest; epandrium, cerci and surstyli as in Figs 79–80. Female T6 of WV shape (Fig. 314).

Redescription. Male. Head. Frons narrow, 0.016 (0.01–0.02/5) of head width at narrowest. Fronto-orbital, parafacial, gena and postgena golden when viewed from above, orange when viewed from below; frontal vitta orange when viewed from above, with golden streaks when viewed from below; fronto-orbital broader below, narrowing to thin line at about 1/3 of its length, frontal vitta obliterated; gena and lower parafacial with horizontal row of stout dark setae; antenna pale yellow; occiput with heavy whitish tomentum and fine, pale setae; median occipital sclerite shiny dark orange; eye with median facets about 4x size of lateral facets; ocellar triangle small, anterior ocellus slightly larger than posterior ocelli; facial ridge with few short, stout, dark brown supravibrissal setae at base.

Thorax orange-brown with whitish tomentose stripes; pleural area orange with whitish tomentum; chaetotaxy: with ac 2:2, dc 2:3, ia 1, ph 1, ppn 3x 3, kat variable 1:1 or 1:2, meral setae typical, 1 pair converging ap, 1 sa, 1 lat, 1 stout bas, 1 weak pb, 1 disc; subscutellum prominently developed; spiracles yellow, medium-sized; legs entirely orange. Wing with anterior edge along costa and veins faintly yellowed, area around crossvein r-m with dark macula; subcostal sclerite orange with dense pubescence; basicosta and tegula orange; stem vein with row of fine, tan setae above; section IV 0.56 of section III; upper calypter pale with dark rim and tan setae; lower calypter tan disc and pale rim with fringe of long pale setae.

Abdomen. T1+2 with anterior half yellow, posterior half yellow-orange; T3–5 purple-orange with whitish tomentum. T1+2 and T3 each with two pairs of small lateral marginal setae; T4 with posterior row of stout setae, disc of T5 only with sparse, scattered, short to medium-long, fine setae. Terminalia in lateral view with surstylus curved slightly backward, cercus with apical hook (Fig. 79); in posterior view cerci with narrow base, broader midway then tapered to blunt tip (Fig. 80); phallus in lateral view with medium-long, stout epiphallus with slight backward curve (Fig. 169); broad in dorsal view, with circular hypophallic lobes and an apical fork on acrophallus (Fig. 170); T6, STS7+8, pre- and postgonite, ejaculatory sclerite and ST6 as in Fig. 227; ST1–5: ST3–4 narrowed, as in Fig. 270.

Female. Similar to male except frons 0.246 (0.24–0.26/5) of head width at narrowest. T6 of FU shape, nearly flat; T7 with wide and deep indentation on anterior edge; T8 as pair of sclerites (Fig. 314); ST6–8 and hypoproct as in Fig. 358; spermathecae filiform (Fig. 399); ST1–5 as in Fig. 443.

Type material examined. HOLOTYPE ♂ (Brazil, Espririto Santo; USNM; Fig. 477), labeled: Espirito Santo / Brazil.; Mesembolia / peregrina / Ald.; Type No. / 25887 / U.S. N.M. [red label]; USNMENT01288288.

Additional material examined. Brazil, Paraná. 1 ♂, Piraguard, Mananciais da Serra, 25°25ʹS 49°03ʹW, 9.iii.2003, Malaise, A.J.C. Agular (USNM) . Rio de Janeiro. 1 ♂, Serviço Febre Amarela, ix.1938, M.E.S. Bras (USNM) ; 1 ♂, Petrópolis E de Rio Le Vallon Alt Mosella, 24.i–23.ii.1959, D’Albuquerquea, R.P. Mello (CNC) .

Santa Catarina. 2 ♀♀, Nova Teutônia, 27°11ʹS 52°23ʹW, 23.xi.1936, F. Plaumann (NHMUK) ; 1 ♀, same data ex- cept 27°11ʹS 52°23ʹW, 19.v.1964, F. Plaumann (CNC) . São Paulo. 1 ♂*, 1 ♀ *, 1 ♀, Estação Biológica de Boracéia Salesópolis, 14–19.x.1970, J.H. Guimarães, J.W. Boyes (CNC) ; 1 ♂, same data except #FN49 (CNC); 1 ♂*, same data except #FN35 (CNC); 1 ♀, same data except #FN32 (CNC); 1 ♀, same data except iii.1992, J.H. Guimarães (USNM); 1 ♂, Casa Grande Boracéia Field Station, Grid 23 kmp 092837, 19–26.ii.1975, T.E. Rogers (FSCA) .

Distribution. Brazil.

Remarks. No specimens were barcoded.