THE CANADIAN ENTOMOLOGIST. 



OBSERVATIONS ON SEVERAL SPECIES OF AEGERIAD^ 

 INHABITING THE VICINITY OF BUFFALO, N. Y. 



PA- D. S. KELLICOTT, BUFFALO, N. Y. 



In this communication it is my purpose to record such of my obser- 

 vations on some local species of the " clear -wings " as it is deemed are 

 real contributions to our knowledge of the group. I shall say more or 

 less about the following species : Aegeria tricincia, pini n. s,, pictipcs, 

 acerni. pyri, tipiiliformis, exitiosa and Trochillum denudatiim. Inhere are 

 other species known in our fauna, but these only have been encountered 

 in the fields. 



Aegeria trichida Harris. 



During June and July last I obtained several examples of this moth 

 from larvre secured in April. These larvae were taken from branches, 

 suckers and small trunks of Popitlus caudicans growing on low lands along 

 the Niagara below the city. The smaller ones were sometimes found in 

 the sap-wood or just beneath the bark, but the larger ones were generally 

 in the centre or pith of the stems ; on the smaller stalks they cause con- 

 siderable galls, quite as prominent as those upon the willow branches made 

 by the larva of the Tortrix, very abundant in the same locality. These 

 poplars are badly infested by the larvae of Saperda moesta, and I am of the 

 opinion that the moth places her eggs in the deserted burrows of the 

 beetle, the young caterpillars thus easily gaining access to the wood, its 

 home for at least a year. The sweUings on the branches caused by the 

 beetle become more enlarged by a second occupation. I have taken them 

 from the stem just above ground, and from limbs of trees many feet high. 



The laivce, when taken, April 15, were of two distinct sizes, the larger 

 measuring from .9 to i.i of an inch in length, the smaller .5 of an inch 

 and less. The former appeared to increase but slightly before pupation. 

 The color is dull white witli a darker line along the dorsum ; head quite 

 strongly bilobed, light brown, jaws and clypeus black; the first ring smooth, 

 slightly clouded with brown, two irregular obliciue marks from posterior 

 border outwards to front edge. Body somewhat attenuated toward either 

 end ; transverse wrinkles, especially on thoracic rings, w^ell marked ; in 

 the small ones there is a slight medio-dorsal indenture ; there are also 

 lateral sub-stigmatal wrinkles. Stigmata elliptical, brown, last pair large, 



