ANIMALS INJURIOUS TO FOREST AND ORNAMENTAL TREES. 



35 



at the end of September will attract numerous beetles. These should, 

 of course, be burnt from time to time and the moss renewed. 



THE FLAT VIOLET BEETLE. 



Callidium violaceum (Linn.). 



Hitherto 1 have only met with this beetle on Spruce palings, 1 to 

 which it frequently does considerable damage. Recently I have 

 received it from living spruce, to which extensive damage had been 

 done. 



LIFE-HISTORY. 



The adult beetles emerge from the borings during the middle and 

 latter part of May, and the beginning of June. They may be seen 



FIG. 9. OUTLINE OF THE EGG. 



FIG. 10. LARVA, dorsal view. 



on the rails and posts and flying from the one to the other, especially 

 when the sun is out. 



The female lays her eggs under the pieces of rough bark and in 

 crevices. She exercises great care in the selection of suitable positions 

 for placing the eggs, feeling about with her long ovipositor, and often 

 trying several niches before she finds one to suit her. 



'Journ. I,and Agents Soc., 1910, p. 242. See also Shoebotham , J. W. (Jount. Kcon. 

 Biology, 1909, vol. iv, pp. 114-123, 12 figs.), from whose paper the above account is 

 extracted. 



