Helosciomyza, Hendel, 1917

McAlpine, David K., 2012, Notes and Descriptions of Australian Helosciomyzidae or Comb-winged flies (Diptera: Schizophora), Records of the Australian Museum 64 (1), pp. 51-70 : 58

Key to species groups in Helosciomyza

1 Scutellum convex dorsally; anterior (r-m) crossvein without trace of infuscation; palpus dark grey to black on c. distal half; mesoscutum without pattern of grey longitudinal stripes; male: segment 4 of fore tarsus subtriangular and longer than wide; abdominal sternite 5 with setulae not concentrated in two dense patches ........................................................... anaxantha group, only species H. anaxantha , p. 58

—— Scutellum flat dorsally; anterior crossvein infuscated, surrounded by brown mark (in unfaded specimens); palpus usually almost entirely yellow; mesoscutum (in clean, dry specimens) tawny, with pattern of five pale grey-pruinescent longitudinal stripes (two outer ones of each side partly joined), in addition to pale greyish lateral marginal zones; male: segment 4 of fore tarsus very short, its dorsal surface subcrescentic ( Fig. 6 ); abdominal sternite 5 with short dense setulae forming two patches ...................................................................... fuscinevris group, p. 59

Figures

Figures 6, 7. Helosciomyza macalpinei, distal part of fore tarsus. (6) male. (7) female to same scale.