xxxiii, '22] 



ENTOMOLOGICAL NEWS 



181 



at Boonton, New Jersey, mines were noted on Lespedcza bi- 

 color, but it is not known definitely if they were the mines of 

 laevigatus. At Monmouth Junction. New Jersey, several clumps 

 of Meibomia canadcnsis growing along a railroad embankment 

 were heavily infested by P. laevigatus (Say) and the following 

 notes are the results of observations made for the most part at 

 this place during 1921. 



Adults appear about the last week of May and first week of 

 June and feed on the upper surfaces of the leaves, leaving 

 nothing but the lower epidermis which becomes reddish and 

 in the course of time somewhat ragged due to the tissue drying 

 and breaking. Copulation takes place during the last half of 

 June, and' by the first week of July small larvae can be found. 

 The eggs are inserted in a little pocket made usually in the 

 lower surface near the edge of the leaf. The subcircular, 

 nearly flat, jelly-like egg is deposited under a thin layer of 

 tissue. Both the tissue above and below the egg are pushed 

 out slightly and this results in somewhat flat, oval-like blister 

 or swelling which is visible on both leaf surfaces. The tissue 

 over the egg on the lower leaf surface becomes dry and whitish, 

 while the upper surface of the blister becomes somewhat red- 

 dish. 



'START 



END 



* 



PACHYSCHELLIS l_/\EVGf\TU5 MINE5 

 IN DC5MODIUM 



