bciV OS iJJdixii'DROCTONUS. 



71 



Fig. 32.— The European barkbeetle-destroyer (Oerus formicarius), introduced Irom Europe in 1892- 

 1893:" A, Adult, dorsal aspect, natural size at right; B, adult, showing attitude when feeding on 

 barkbeetlc; C, pupa and details: D, larva and details. Greatly enlarged. (Author's illustration.) 



■> Hopkins, 1899a, pp. 297-231. 



