Acrogonia albertoi sp. nov.

(Figs. 45–52)

Total length. Male holotype 9.5 mm; male paratypes 9. 0–9.3 mm (n = 4); female unknown.

Holotype description. Head and thorax. Structural features of head and thorax (Figs. 45–46) much as described above for A. amazonensis sp. nov., except for forewings (Figs. 45–46) translucent.

Color. Crown (Fig. 45), anterior margin of pronotum and mesonotum dark brown mottled with yellow; pronotal disc (Fig. 45) brown mottled with yellow. Forewings (Figs. 45–46) translucent. Face (Fig. 46) dark brown with three large, conspicuous pale yellow spots on frons (median superior one and pair of inferior ones). Lateral portions (Fig. 46) of thorax dark brown with pale yellow maculae; ventral portions of thorax mostly dark brown. Legs (Fig. 46) yellow with dark brown portions.

Male genitalia. Pygofer (Fig. 47), in lateral view, strongly produced posteriorly, distal half expanded; disc with dispersed setae. Subgenital plates (Fig. 48), in ventral view, triangular, basal third slightly expanded laterally and then tapering gradually toward apex; in lateral view, plates elongate, extending almost as far posteriorly as pygofer apex; plate surface with scattered setae. Connective (Fig. 49), in dorsal view, Y-shaped; arms poorly developed; stalk narrow, without median keel, apex slightly expanded. Style (Fig. 49), in dorsal view, sinuous; extremely elongate, extending posteriorly much farther than apex of connective; without preapical lobe; apical portion directed inward; apex acute. Aedeagus (Figs. 50–51) symmetrical, bifid, slender, with pair of small preapical bifid processes. Anal tube (Fig. 52) without processes.

Female unknown.

Etymology. The new species is described in honor of the father of the first author, Sr. José Alberto da Silva, in recognition of his important contribution to her professional development.

Type material. Holotype: male, “ Brasil [state of] Pará \ Serra Norte \ CALDEIRÃO\ COL : NOTURNA\ 5-XI- 1985 ” (MPEG). Paratypes: two males, “ Brasil Pará \ Serra Norte \ SERRARIA\ 19-X-1984 ” (MPEG, MNRJ) ; one male, “ Brasil, Pará \ Serra Norte \ SERRARIA\ COL NOTURNA \ 25-X-1984 ” (MPEG) ; one male, “ Brasil Pará \ Serra Norte \ Caldeirão \ 27-X-1984 \ col. noturna” (MPEG) .