OAK INSECTS. 



151 



Description 'and biology: Beetle 5-8 mm. long, ot variable color (olive green, blue 

 green, blue, coppery, etc.), undersides black. Protliorax much broader than long, 

 with median impression. Larva with first thoracic segment strongly broadened, body 

 white. A generation requires two years. 



Distribution: Europe (Austria, Germany). Introduced into eastern United States 

 in roses. 



Hess, Richard. Der Forstschutz, 1900, vol. 2, pp. 7, 8, figs. 2, 3. 



Fig. 76. — Great oak-borer ( Ccramhyx ardo): Adult, and larva. (Niisslin.) 



Cerambyx cerdo Linnseus 



(Great Oak Borer. Cerambycidse; Coleoptera.) 



Hosts: Oak, cork oak, ash, walnut. 

 Injury: Bores in wood. (See text fig. 76.) 

 Distribution: Europe, Sudan, Tunis. 



NussLiN, Otto: Leitfaden der Forstinsektenkunde, 2d ed., 1913, pp. 145-148, figs. 



115, 116. 

 SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, pp. 495-496. 



Haltlca quercetorum Foudr. 



(Oak Flea Beetle. Chrysomelidse. Coleoptera.) 



Hosts: Oak, hazel, willow, birch, tea rose, beech, alder. 



