278 THE DRY-FLY MAN'S HANDBOOK 



tially a spring fly. The larva also resembles that of 

 the grannom in making a quadrilateral case which 

 may be distinguished by its greater length and more 

 gradual taper. 



DIVISION II 



^QUIPALPIA 



Trichoptera which in both sexes have five-jointed 

 maxillary palpi. 



LEPTOCERID^ 



Molanna angustata. Spur formula 2, 4, 4. 

 This insect may be identified by its long narrow 

 straw-coloured wings project- 

 Molanna angustata. ing some distance beyond the 



body. It has long sprawling 

 legs and a general characteristic appearance. The 

 larva makes a very curious case, consisting of a central 



tube surrounded 



Fig. 56. Molanna angustata Caddis x 4 -^^ ^ mass of sand 



and fragments of 

 silex, so arranged 

 as to give a very 

 broad and flat- 

 tened external as- 

 pect. The case is 

 shown at Fig. 56. 

 The mature fly is nocturnal in its habits, and is only 

 seen by day when accidentally disturbed from the reeds 

 or foliage in which it finds a refuge. 



