TACHINIDAE OF AUSTRALIA 29 
also); abdominal T1 + 2 excavate to its hind margin; infrasquamal hairs absent; 
3 with long slender L-shaped aedeagus (Text-fig. 22). [Parasites of Coleoptera] 
PROSENINAE (part) (p. 41) 
[Note: A few non-prosenine forms conform very closely with the characters cited. 
If specimens conform but from experience do not appear to have a prosenine 
facies they should be tested next in the tribal keys for Tachininae or Goniinae. 
If characters appear to conform but the known host is not a beetle then pass to 
couplet 8]. 
— Forms without such combination of characters present simultaneously, normally 
failing on at least one and usually more than one of the characters cited. [Para- 
sites mainly of Lepidoptera, Tapaige reed Hymenoptera, Coleoptera, Orthoptera, 
Phasmatodea, Mantodea). 5 8 
[Note: If the eyes are densely haired, or the prostertum is ‘ia hae; or the pra 
seta is very long and strong, then pass immediately to couplet 8 without further 
consideration: if the eyes are bare, the prosternum bare and the pra seta weak 
then a critical consideration of the other characters cited in the first half of 
couplet 7 must be made at this point. ] 
8 Pre-alar seta (pra) very strong (longer and stronger than first post ia seta or the 
first post dc seta) and the prosternum setulose. Propleuron bare. Second costal 
sector bare ventrally. Infrasquamal hairs absent. [Parasites of Lepidoptera or 
Hymenoptera Vespoidea, one genus (Pseudalsomyia) on Cerambycidae}| 
GONITINAE (part) (p. 74) 
— Pre-alar seta (pva) small or absent (usually not larger than first post ia seta, if larger 
as in some Tachinini then prosternum bare). Prosternum bare or setulose. 
Propleuron bare or haired. Second costal sector bare or haired ventrally. 
Infrasquamal hairs sometimes present. [Parasites of Lepidoptera, Coleoptera, 
Hymenoptera Symphyta, Orthoptera, Phasmatodea, Mantodea) z 9 
9 Prosternum bare (haired in a few exceptions but then either hairing on auterior edge 
of prosternum and on prosternal membrane, or arista plumose, or two strong 
widely separated post ia setae and fore tarsi flattened, or epistomal margin strongly 
projecting and vibrissae inserted high above level of epistomal margin, or ptero- 
pleural seta absent and vein FR, setulose on most of its length). Pteropleural 
seta present or absent. Epistome often strongly projecting and easily visible in 
profile, the vibrissae then often high above level of epistomal margin (as in 
Text-figs 41-46). [Parasites of Lepidoptera (except Apatemyia on Coleoptera) | 
TACHININAE (p. 50) 
— Prosternum haired or setulose but sometimes only a single hair on each side 
(Text-fig. 9) (bare in a very few exceptions but then subapical scutellar setae very 
strongly diverging and either apical scutellar setae absent or male with dense 
hair fascicles on T5). Pteropleural seta present. Epistome not projecting and 
invisible in profile or at most only rather weakly projecting, vibrissae usually 
not much above level of epistomal margin (e.g. Text-fig. 49). [Parasites of 
Lepidoptera, Coleoptera, Hymenoptera Symphyta, Phasmatodea, Mantodea) 
GONIINAE (part) (p. 74) 
[Note: It is almost impossible to separate the Tachininae from the Goniinae with 
small pre-alar seta in a satisfactory way. The distinctions given in couplet 9 
should help to separate specimens of the two subfamilies, but in cases of doubt 
specimens should be run in the tachinine and goniine tribal keys. ] 
SUBFAMILY PHASIINAE WITH KEYS TO THE TRIBES AND GENERA 
This subfamily is morphologically very diversified but biologically very discrete, 
for the hosts of the true phasiines are all in the Hemiptera-Heteroptera and all 
