210 



FOREST ENTOMOLOGY. 



against the bark infested with Chionaspis, and sincerely designated 

 the squashed eggs as " blood." Subsequent research with the micro- 

 scope has yielded many happy hours with what was originally 

 crushed in a careless and thoughtless manner. These eggs are of 

 a chocolate colour in autumn, just after oviposition, but become 



Fig. 205. Life-history o/CMonaspis salicis. 

 1, egg; 2, larva; 3, dorsal surface of female scale (o) first larval moult, (b) second 

 larval moult ; 4, under surface of female scale, showing dead female and eggs ; 

 5, fully developed female at period of fecundation ; 6, form of female scale at period 

 of egg-deposition ; 7, male scale or puparium ; 8, fully developed male ; 9, pygidium 

 or anal segment of female as seen under J-inch objective. 



lighter";during the winter months. Now let us follow the develop- 

 ment of these eggs. Fig. 205 (1) represents a single egg. The larvas 

 hatch out in Cheshire'about the beginning of May, and by the middle 

 of that month the infested stems may be recognised at a considerable 

 distance, on account of the numerical strength of the larva?, imparting 

 quite 'a red colour to the stem. These larva? (fig. 205 (2)) are at first 



