20 



THE BIOLOGY OF INSECTS 



Fig. 7.— Mouth-parts of Breeze-fly (Therioplectes) A, labmrn- 

 epipharynx. B, hypopharnyx {sr, salivary reservior) ; C, mandible. 

 D maxilla (c, cardo ; s, stipes ; /, lacima ; g, galea ; p, palp), t, 

 labium {la, labella with pseudotracheal channels for suction ; m, mentum). 

 X 30. 



