McAlpine: Australian Helosciomyzidae 
59 
Other material examined. Tasmania: 2$$, 1$, Mount 
Wellington, lower slopes, wet forest, 12.ii. 1963, D.H.C. 
(ANIC). 
Distribution. Tasmania: apparently widely distributed but 
endemic to the state. The record for Australian Capital 
Territory (Black Mountain, in Steyskal & Knutson, 1979: 
732) is due to a misidentification (see under Neosciomyza 
peckorum). 
Helosciomyza fuscinevris species group 
This is a very uniform grouping, except for some minor 
features of chaetotaxy, and is characterized as in the above key. 
Included species are: Helosciomyza fuscinevris (Macquart) 
(synonyms H. ferruginea Hendel, H. aliena Malloch), H. 
subalpina Tonnoir & Malloch (New Zealand only), H. bickeli 
n.sp., H. subacuta n.sp., H. neboissi n.sp., H. australica 
Steyskal, H. steyskali n.sp., H. obliqua n.sp., H. driesseni 
n.sp., H. macalpinei Steyskal. 
Key to Australian species of fuscinevris group 
1 Pteropleuron (anepimeron) setulose; hind tibia without dark zone 
near base; male: abdominal pleural membrane with group of minute 
setulae near spiracle 1 (often absent in female); surstyli as in Figs 
16, 17 (slightly variable). fuscinevris, p. 60 
-Pteropleuron bare; hind tibia usually with brown to black sub-basal 
or basal zone; no setulae present near abdominal spiracle 1 (male, 
female); male surstylus variable in shape . 2 
2 Hypopleuron (metepisternum) with c. 2-12 small black setulae; 
abdominal sternite 1 setulose; antennal segment 3 tawny-orange, 
without or with very indistinct darker zone; male: surstylus as in 
Fig. 15 . bickeli, p. 60 
-Hypopleuron and sternite 1 without setulae; antennal segment 3 
often with darker brown to blackish zone; male: surstylus variable . 3 
3 Fore femur entirely pale tawny-yellow on basal half or more 
(significantly including the somet im es concealed anterior surface). 4 
-Fore femur largely tawny-yellow, anterior surface with distinct 
brown zone extending to near base (also brown distally). 6 
4 Antenna 3 brown to blackish on entire distal half or more; male: 
hind basitarsus with ventrobasal dense, non-linear cluster of short, 
thick, black suberect spinules; surstylus as in Fig. 22 . australica, p. 64 
-Antenna 3 usually tawny orange at and below apex, more brownish 
dorsally between apex and aristal insertion and on outer lateral 
surface; male: hind basitarsus without such cluster of short, 
black spinules, occasional black setulae in this position sparse 
and distally inclined; surstylus otherwise . 5 
5 Fore femur with conspicuous dark brown subapical spot on 
posterior surface; mesoscutum with pruinescent dorsocentral stripe 
not covering and emphasized by a darker cuticular dorsocentral 
stripe (pruinescent stripe faded in some preserved specimens); male: 
surstylus as in Fig. 21 . neboissi, p. 63 
-Fore femur with only indistinct indication of dark subapical 
posterior spot (dark subapical anterior spot well developed); 
grey-pruinescent dorsocentral and other such longitudinal stripes 
of mesoscutum with underlying dark brown cuticular stripes, 
which tend to remain when pruinescent stripes are faded; male: 
surstylus as in Fig. 18 . subacuta, p. 63 
6 Antenna 3 tawny-orange, with only limited dorsal reddish brown 
zone; male: surstylus as in Fig. 23 . steyskali, p. 64 
-Antenna 3 dark brown to blackish on distal half or more, or at least 
on a substantial dorsal zone (sometimes less, as in H. driesseni ); 
male: surstylus otherwise. 7 
7 Occipital region of head with broad supracervical zone of 
blackish cuticle (seen through paler pruinescence) usually with, 
on each side, a dorsolateral extension partly bounded medially 
