INSECTS 



375 



Fig. 228. Net-winged Insects (Neursptera) 



i, la, il>, Stages of common May- Fly (Ephemera vulgatd) ; 2, another species of May- Fly (Palin- 

 genia horaria}', 3, 3^, adult and larva of Horse-Stinger (Libellula depressa) ; 4, 5, Common Scorpion-Fly 

 (Panorpa communis) ; 6, 6a, Alder-Fly (Sialis lutaria] ; 7, Large Caddis- Fly Phryganea grandis] ; 

 8, Diamond-spotted Caddis- Fly (Limnophilus rhombicus). 



