58 
Records of the Australian Museum (2012) Vol. 64 
Figure 13. Eurotocus australis, head of female. Three postgenal bristles indicated. 
Genus Helosciomyza Hendel 
Helosciomyza Hendel, 1917: 3. Type species (monotypy): H. 
ferruginea Hendel [= Helosciomyzafuscinevris (Macquart)]. 
Notes 
Helosciomyza is characterized as indicated in the above 
key, but is particularly justified by the following three 
apomorphic conditions of the male postabdomen, not 
simultaneously present in other Australian genera: (1) 
anterior epandrial process absent; (2) basal surstylar process 
absent; (3) elongate, freely projecting epiphallus present 
on aedeagus. 
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 sub triangular 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 
Helosciomyza anaxantha species group 
This group is characterized as indicated in the above key. It 
resembles the genera Luta and Neosciomyza in the convex 
scutellum and less shortened segment 4 of the male fore 
tarsus, but lacks the anterior epandrial process and the 
basal surstylar process, both present in the males of those 
groups. Usually there are just two pairs of dorsocentral 
bristles but one specimen has three well-developed pairs. 
Among Australian helosciomyzids, the combination of 
dorsally convex scutellum with absence (without trace) of 
the proepimeral bristle occurs only in this group. 
The only included species is H. anaxantha Steyskal. 
Helosciomyza anaxantha Steyskal 
Helosciomyza anaxantha Steyskal, in Steyskal & Knutson, 
1979:731-733, figs 11,12; Barnes, 1981:54-56, figs 9,10. 
Type material (re-examined D.K.M.). Holotype S- 
Tasmania: Hellyer Gorge, Waratah Highway, 8.i. 1960, 
D.K.M. (AM K263391). Glued to card point, much damaged 
and badly repaired. Postabdomen in micro-vial on pin. 
Paratypes. Tasmania: 1$, 2 mi. (c. 3.2 km) S of Oonah, 
Waratah Highway, c. 1300 ft (c. 400 m), 7.L1960, D.K.M. 
(AM); lc?, Russell Falls, Mount Field National Park, 
13.L1960, D.K.M. (AM); 1<$, Hartz Mountains, 800 ft (c. 
240 m), 20.L1960, D.K.M. (AM). 
