42 



HANDBOOK OF ANTS, BEES, ETC. 



wherein to pass the pupa state. They may be seen almost 

 everywhere where there is water. 



The caddis flies may be divided into two famiUes, though the 

 distinguishing marks are so minute that they really ought to be 



Fig. 52. — Hydropsyche Montana. 



classified as one family only. To Mr. McLachlan we owe many 

 thanks for his researches in this group of insects. 



Family i, IncBguipalpia. — This family includes the largest 

 species of the tribe, and are principally found in northern regions. 



Fig. 53.— Marronema Rubiginosa. 



One of our largest British species is Phryganea grandis, which 

 measures four-fifths of an inch in length, and over two inches in 

 expanse of the wing. It is an abundant insect, of a brown colour, 

 with yellow rings on its atiteniice, and the anterior wings are ash- 

 coloured, clothed with brown. 



