470 OHIO EXPERIMENT STATION: BULLETIN 332 



PLATE LXX 



Fig. 1. — The Maple and Oak Twig Pruner (Elaphiclion villosum). a, b 

 and c show the insect in the larval, adult and pupal stages; d and e, the cut 

 ends of a severed twig, and f , the pupa within a gallery in the severed twig. 



After Chittenden. 



Fig. 2. — The Bronze Birch Borer (Agrilus anxius). Larva and adult en- 

 larged about three diameters. 



After Chittenden. 



Fig. 3. — The Pigeon Tremex (Tremex columba). Larva, adult and pupa. 

 Slightly enlarged. 



After Riley. 



