DIPTEKA. 



4 8; 



The Dung-flies, Scatqphaga (Sca-toph'a-gaj, are rather 



in, 



in OJ 



vii, + ix " Vj + vii , 



Fig. 591. — Wing of Callopistria annul 



slender flies, which have the body clothed with yellowish 

 hair, and which are com- 

 mon, especially about 

 fresh cow-dung. They 

 belong to the Subfamily 

 Cordyluriiitz (Cor-dyl-u- 

 ri'nse). 



To the subfamilies Or- 

 talincB 1 Or-ta-li'ns) and 

 Trypetince (Try-pe-ti'nae) 

 belong many common 

 species which have the 

 wings beautifullv marked 

 with dark spots or bands. 

 In the Ortalinse vein II 

 extends to the margin of 

 the wing in the usual 

 way; in the Trypetinae 

 the outer part of vein II 

 turns suddenlv towards 



the margin of the wing, 

 and at the same time 

 becomes much less dis- 



Fig. 552. — The Apple-maggot; 1, larva: 2. pupa 

 rium; 3, adu't- ia, head of larva from side, 

 showing mouth-parts and cephalic spiracle; 

 ib. head of larva from below; ic, caudal 

 spiracle of larva. 



