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TABLE OF FAMILIES OF DIPTERA. 



SECTION I. PROBOSCIDEA. 



Mouth having a more or less fleshy trunk or proboscis, 



bilobed at the tip. 

 Legs set close together on the under side of the thorax. 



SUBSECTION I. NEMO CERA. 



Antennae long, of six to ten distinct joints ; hairy. 

 Wings ; anal areolet open at the hind margin. 

 Figure usually slender, hump-backed, long-legged. 



Families : 



a. Ocelli two or three. 



1. Discal areolet complete. 



Rhyphidge. 



2. Discal areolet wanting. 

 Mycetophilidas (1st segment of thorax 



inconspicuous). 



Bibionidae (1st segment of thorax con- 

 spicuous). 



#. Ocelli none. 



1. Costal vein ending near tip of wing. 



Simulidse Sand/lies. (Tibias and 1st joint 



of tarsus broad and compressed.) 

 Chironomidge Midges. (Tibiae and 1st joint 

 of tarsus slender, sub -cylindrical.) 



