Apogonalia fraterna Young, 1977

(Figs 23–28)

Diagnosis. Anterior dorsum pale yellow with black areas. Crown (Fig. 23) with anteromedian pair of diagonal black arches connected medially; posterior half with mosaic. Pronotum (Fig. 23) with median stripe and pair of lateral, anteriorly convergent arches, yellow bordered by black. Mesonotum (Fig. 23) with pair of broad, longitudinal black stripes; median portion yellow. Forewing (Figs 23, 24) red with whitish stripes on cells, apex gray; claval sulcus with broad and conspicuous blackish stripe bordered by white stripes; costal area with two adjacent longitudinal stripes, innermost white and outermost black. Face pale yellow with black marks; lateral portions yellow; frons with dorsomedian pair of narrow longitudinal black stripes; median portion with inverted Vshaped black mark; pair of mediolateral, elongate Y-shaped black marks. Clypeus with mosaic and ventral black macula. Male pygofer with posterior margin concave (Young 1977, fig. 752c), long unpaired process on inner ventroapical portion (Young 1977, fig. 752p). Paraphyses with basal sclerite asymmetrical, rami long and conspicuous (Young 1977, fig. 752h). Aedeagal shaft approximately rectilinear, with long unpaired ventral process (Young 1977, fig. 752f). Female sternite VII (Fig. 25) with posterior margin triangular, apex concave. Sternite VIII (Fig. 26) with sclerotized plate concave on anteromedian margin, depressed on median line.

Female length. 10.4 mm (n = 1).

Description of female genitalia. Sternite VII (Fig. 25) moderately produced posteriorly; posterior margin triangular; apex convex. Sternite VIII (Fig. 26), in dorsal view, with transverse sclerotized plate; anterior margin of plate with broad median concavity; dorsal surface convex, medially depressed; posterior margin truncate. Pygofer similar to that of A. angusta . Valvula I, in ventral view (Fig. 27), with basal portion moderately broad; basal margin oblique and broadly convex; blade similar to that of A. angusta . Valvula II similar to that of A. angusta; teeth, on median portion, triangular and elongate, moderately prominent, 3–4 times longer than high, spaced from one another about 0.5 tooth length; preapical prominence approximately aligned to anteapical tooth (Fig. 28).

Material examined. Mexico: Guerrero, one specimen without abdomen (BMNH); Jalisco, one female (BMNH); Oaxaca, one male (BMNH) .