TACHINIDAE OF AUSTRALIA 



195 



humeral callus 



notopleuron 



transverse 

 suture 



postalar callus 



clorsocentrals 

 A acrostichals 



humerals 



posthumerals 

 notopleurals 



presutural 

 seta 



pre-alar 

 seta 



supra-alars 

 ntra-alars 



postalars 



basal 



lateral 



discal 



RWC 



Figs 4-6. Terminology of thoracic dorsum in Tachinidae. 4, dorsum of thorax, scutellum 

 omitted, with a complete arrangement of chaetotaxy indicated schematically on one 

 side only. 5 & 6, two typical shapes of scutellum and terminology of scutellar bristling; 

 the straight lines connecting basal and subapical setae illustrate important differences 

 in proportion. 



