Apterobiroina L. Papp, 1979

Papp, László, 2021, New Species Of Apterobiroina L. Papp And Bentrovata Richards (Diptera, Sphaeroceridae) From Australia, Acta Zoologica Academiae Scientiarum Hungaricae 67 (2), pp. 101-117 : 109

Key to the known species of Apterobiroina L. Papp, 1979

1. Haltere completely absent; ocellar seta very large. Thorax and legs all black. Dorsal seta on female epiproct short ( Fig. 18 ) A. truncata sp. n.

– Haltere normal, though small; ocellar seta smaller. At least tarsi, bases and apexes of tibiae yellow. Dorsal seta of female epiproct long ( Fig. 16 ) 2

2. All parts of head, incl. antenna, yellow; all parts of legs but fore tibia yellow. Fore tibia brown. Knob of haltere wax-yellow to ochre, stalk even lighter. Apical row of pegs on ventro-medial process of synsternite with 16 pegs ( Figs 9–10 ). Distiphallus long ( Figs 12–13 ). Surstylus smaller, in 2 smaller lobes ( Figs 14–15 ) A. flavipes sp. n.

– Only anterior 1/3 to 2/5 of frons yellow; and only tarsi, bases and apexes of tibiae reddish yellow. Haltere with black knob and brown stalk. Apical row of pegs on ventro-medial process of systernite with 12 pegs. Distiphallus short ( Figs 5–6 ). Surstylus larger, in 2 distinctly divided lobes ( Fig. 4 ) A. australis L. Papp, 1979

Figures

Figs 16–20. Apterobiroina species, paratype females, genitalia. 16–17: A. flavipes sp. n.: 16 = epiproct and cerci, dorsal view; 17 = hypoproct and cerci, ventral view. 18–20: A. truncata sp. n.: 18 = epiproct, cerci and hypoproct, dorsal view; 19 = paired spermathecae; 20 = single spermatheca. Scale: 0.1 mm for all

Figs 7–15. Apterobiroina flavipes sp. n., paratype male, postabdomen and genitalia. 7 = basal sternites, ventral view; 8 = synsternite, subventral view; 9 = sternite 5 with ventro-medial part of synsternite, ventral view; 10 = ventro-medial part of synsternite, ventral view; 11 = hypandrium, ventral view; 12 = genital complex, lateral view; 13 = right postgonite and phallus, dorsal view; 14 = surstylus, broadest dorsal view; 15 = same, broadest ventral view. Scale: 0.4 mm for Figs 7–8, 11; 0.2 mm for Fig. 9; 0.1 mm for Figs 10, 12–15

Figs 1–6. Apterobiroina australisL. Papp, paratype male, terminalia. 1 = sternite 5 and ventral part of synsternite, ventral view; 2 = ventro-medial part of synsternite; 3 = subepandrial scle- rite, broadest view; 4 = surstylus, broadest (sublateral-subventral) view; 5 = genital com- plex (without distiphallus), ventral view; 6 = same, lateral view. Scale: 0.2 mm for Figs 1, 5–6; 0.1 mm for Figs 2–4