Canoptila bifida Mosely

(Figs. 1–3)

Canoptila bifida Mosely, 1939: 218 [Type locality: Brazil, Santa Catarina, Nova Teutônia; BMNH; male].

Canoptila bifida can be distinguished from C. williami, new species, by the shape of abdominal segment IX, which is much broader laterally. Tergum X is triangular in lateral view in C. bifida and quadrate in C. williami . In C. bifida, tergum X is also bifid in dorsal view, while it is subquadrate in the new species. The dorsomesal processes on the endotheca are much more heavily sclerotized and prominent in C. bifida than in C. williami, while the basolateral digitate parameres are smaller. In the forewing of C. bifida, the apical part of Cu2 turns sharply downward to meet the wing margin at the intersection of Cu1 and Cu2, whereas in C. williami, it turns down distad of this intersection.

Adult male. Length of forewing: 2.7–3.0 mm (n =4). Body, wings, and appendages tawny, legs and base of antennae yellowish brown. Wings (Figs. 2 A, 2B) as detailed in the generic diagnosis.

Male genitalia (Fig. 3). Sternum VI (Fig. 3 A) with thin, digitate mesal process, projecting caudally. Abdominal segment IX (Fig. 3 B) broadest laterally, anterior margin sinuous. Tergum IX in lateral view (Fig. 3 B), with anterior margin sinuous, forming truncate ridge apicodorsally; in dorsal view (Fig. 3 C), with posterior margin rounded, covered in fine microtrichia. Tergum X in lateral view (Fig. 3 B), triangular, ventral margin smooth, sloping downward, setose dorsally, apically, and ventrally, apex rounded; in dorsal view (Fig. 3 C), bifid, lightly sclerotized laterally, membranous mesally, with pair of long spine­like processes arising from posterolateral margin at right angle, curved inward. Phallocrypt (Fig. 3 B) extending from beneath tergum X to ventral region of segment IX, entirely membranous except for lightly sclerotized phallic shield where phallic apparatus is attached. Phallobase (Figs. 3 B, 3D) reduced, lightly sclerotized, with paired row of setae ventrolaterally. Endotheca (Figs. 3 B, 3D) membranous, basoventrally bearing pair of small, membranous digitate parameres with small apical sclerite. Endophallus (Figs. 3 B, 3D) highly membranous, enlarged and convoluted when evaginated; dorsomesally bearing pair of large, heavily sclerotized, bifid processes, their Material examined: BRAZIL: Santa Catarina: Seara (Nova Teutônia), 27°11'00"S, 052°23'00"W, 300–500 m, 1.xii.1937, Plaumann— 1 male (holotype) (UMSP000107591) (BMNH); same except 1.i.1963, Plaumann— 2 males (NMNH); same except 1.x.1964, Plaumann— 1 male (NMNH).

Distribution. Brazil. This species is known only from the Atlantic Forest in southeastern Brazil.