33 



AUSTRALIAN STRAT10MYIIBM. 



By G. H. Hardy. 



Plate VIII. 



(Read 8th Juno, 1920.) 



Fain. STRATIOMYIID^E. 



The sp i ies belonging to this family are easily recog- 

 nised by a combination of two \\ national characters — one 

 is a short distal cell emitting vi ins. s< me of which do not 

 as a rule reach the wing border, and the lower branch of 

 the cubital fork running to or above the apex of the wing 

 is tl i other. The ant una' ar • of diverse forms, the third 

 joint of which may consist of as many as eight segments 

 clearly defined, or all or many of these segments may be 

 partly or completely fused. The abdomen consisting of 

 from five to seven visible segments is often depressed. 



Key to tht Subfamilies of the Stratiomyiida. 



1. The abdomen with - ven visible s gments. beridinjs. 



The abdomen with five or n v visible segments. 2. 



2. The wings with three posterior veins. 3. 

 The wings with four <r veins. 4. 



3. Antenna? with a short, usually bulbous, third joint 



which bears a hair-like arista. pachygastebin.*:. 

 The antenna; elongat . ten- segmented, the tenth seg- 

 ment as long as the other nine together, ribbon- 

 like, and more or less parallel sided, i.opiiatei.lin.k. 



4. The wings with the fourth post rior cell rising from the 



cliscal cell, or at least touching it. 5. 



The wings with the fourth posterior cell rising from 



the second ba al cell and not touching the discal 



cell. 6. 



5. The scut Mum without spines and the la-st antenna) 



segment elong; hermetiin.k. 



The scutellum with spines and the last antennal seg- 

 ment short or moderately long. c i.itellarin^:. 



6. Tho antenna? with a thread-like arista. sargin^e. 

 The antenna? without an arista, at most with a short 



blunt Style. 8TRATI0MYIIN.B. 



C 



