1903] 



MORRILL : — ALE YRODES 



83 



4. Aleyrodes packardi Morrill. 



Can. ent., vol. 35, p. 25-35. (1903-) 



This species is very abundant on strawberries at Amherst and appears to be 

 generally distributed throughout the Eastern United States. I have found it occa- 

 sionally on Camperdowm elm, Spiraea, and ash. 



5. Aleyrodes fernaldi, sp. nov. 



Full grown larva. Length, .52 mm., greatest width, 30 mm. Form broadly ellip- 

 tical. Color pale yellowish green with an irregular orange yellow body on each side in the 

 basal abdominal region. Abdominal segmentation distinct, thoracic segmentation less so. 

 Margin crenulated, surrounded by a narrow fringe of wax. Three pairs of marginal spines : 

 one pair on cephalic margin, very minute; one pair on caudo-lateral region, one on each 

 side, very minute; a pair on caudal margin, about one tenth the length of the body. 

 Vasiform orifice essentially as in pupa. Eyes small, color dark red. In the single specimen 

 examined but one pair of dorsal spines was observed. These were on the cephalic region 

 between the eyes. 



Aleyrodes fernaldi. Portion of margin of pupa. 



Pupa. Length, .']i-&\ mm., greatest width, 

 .44-54 mm. Form, subelliptical, slightly narrowed 

 anteriorly; dorsal surface nearly flat; older speci- 

 mens raised from surface of leaf by vertical wax 

 fringe ; margin fully crenulated. Color when 

 freshly moulted, pale greenish white, operculum 

 tinged with yellowish ; older specimens except for 

 a space of about one fourth the width of the bod\- 

 all around the margin covered with a white, thin, 

 amorphous waxy secretion, giving to the pupae 

 on a leaf a clear white appearance. Space between 

 extreme margin and part covered by wax showing 

 fine radiating striae and glistening structures which 

 appear like rounded or conical protuberance.^. 

 Across the middle of the dorsum, breaks in the 

 waxy covering indicate the divisions between the 

 body segments and in addition a median longitu- 

 dinal break extends along the dorsum from the 

 anterior edge of body to the base of abdomen. 



Wax covering or plate otherwise interrupted by rather large irregular openings through 

 which circular pores in integument can be frequently seen, — /. e. one to each opening. 



Aleyrodes fernaldi. Dorsum of pupa. 



