Apiformyia, Yeates, David K., 2008

Yeates, David K., 2008, Apiformyia, a new genus of Australian bee flies (Diptera: Bombyliidae, Bombyliinae) with affinities to the New World Heterostylum Macquart, Zootaxa 1714, pp. 31-36 : 32

Apiformyia new genus

( Figs 1–4)

Type species A. australis new species.

Diagnosis. Relatively large bombyliine (body length 9–15 mm excluding mouthparts, Fig. 1). Eyes separated by 0.5 x width of median ocellus in male ( Fig. 2 ), 2.0 x width of ocellar triangle in female. Mouthparts elongate, as long as scutum ( Fig. 1). Antennae with an elongate conical 2-segmented flagellum with an apical style. Antennal bases close together, separated by the width of the scape. Palps small, single segmented. Posterior eye margin sinuous ( Fig. 2 ). Wing venation very similar to Heterostylum , with closed cell R5, M1 and M2 arising from almost the same point at the apex of cell dm; cell cup open, cross-vein r-m arising about 2/3 from the base of cell dm. Laterotergite bare. Abdomen broad and short; epandrium simple, hypandrium present, well-developed, phallus simple, conical, without epiphallus. Gonostylus relatively simple, without notches, teeth or other structures ( Fig. 3 ). Female genitalia with fused tergites 9+10, acanthophorites absent; furca rodshaped, 3 simple spermathecae which differs from Heterostylum by the elongated bulbs, spermathecal ducts more than twice as long as sperm pump and sclerotized collars well developed ( Fig. 4 ).

Description. Head mouthparts elongate, as long as scutum ( Fig. 1). Antennae with an elongate conical 2- segmented flagellum with an apical style. Face protruding conically about ½ eye width. Antennal bases close together, separated by the width of the scape. Palps narrow, small, hidden almost entirely in oral cavity, consisting of a single segment. Posterior eye margin sinuous ( Fig. 2 ).

Thorax broad and scutum and scutellum entirely clothed in hairs. Pleural sclerites clothed in hairs except proepimeron, meropleurite and laterotergite bare. Wing with closed cell R5, M1 and M2 arising from almost the same point at the apex of cell dm; cell cup open, cross-vein r-m arising about 2/3 from the base of cell dm ( Fig. 1). Legs elongate, mid and hind femora with a single row of black setae ventrally, mid and hind tibiae with 2 rows of black setae ventrally.

Abdomen broad and short; epandrium, simple, quadrate, with truncate apical margin; male genitalia ( Fig. 3 ) with hypandrium present as a large triangular sclerite between the gonocoxae, ejaculatory apodeme relatively small, contained within margins of gonocoxae. Phallus simple, conical, without epiphallus. Gonostylus relatively simple, without notches, teeth or other structures. Female genitalia lacking a sand chamber, with a small, fused tergites 9+10, acanthophorite spines absent, furca simple, rod-shaped, and 3 spermathecae with elongate spermathecal bulbs, sperm pumps present, spermathecal ducts more than twice as long as sperm pump and sclerotized collars well developed ( Fig. 4 ).

Figures

FIGURE 2. Head in lateral view, male Apiformyia australis, eye height 4 mm.

FIGURE 3. Apiformyia australis male genitalia, epandrium removed. Left, dorsal view, vestiture not shown; Right, lateral view. Scale line = 0.5 mm.

FIGURE 4. Apiformyia australis female genitalia and spermathecae. Scale line = 0.5 mm.