324 



R. W. CROSSKEY 



vibrissal 

 axis 



epistoma 

 axis 



transverse suture 

 notopleuron 



prescutum 



pteropleuron pteropleural seta postalar wall 



suprasquamal 

 ridge 



humeral 

 callus 



mesopleuron 

 propleuron 



propleural seta 

 prostigmatic seta 



sternopleural setae 



sternopleuron 



posteroventral 

 declivity of 

 the thorax 



RWC 



Figs 4-7. Terminology of the tachinid head and thorax. 4-6, left lateral views of some 

 head shapes showing landmarks used in keys and descriptions. 7, left lateral view of 

 thorax, vestiture omitted but principal setae of pleural regions indicated by pore positions. 



