Aphid Food Plant Catalogue. 213 



to yi indicated by 55, 55, 53, 14+85, III with about 17 sensoria 

 in an even row. Hind tibia less than one-half as long as base 

 of VI. Cornicle much shorter than V and with distal one- 

 fourth reticulated. Anal vein of fore wing not much, if any, 

 longer than V and about half as long as the vein Cu. (104-18). 

 Apterous viviparous female: general body color green. 

 Comparative length of antennal segments III to VI indicated 

 by 65, 45, 45, 13+75, III with about three sensoria. Cornicle 

 about as long as III and with distal one-tenth reticulated. (104- 



18). 



This species was collected from ironwood (Ostrya virgini- 

 ana (Mill) ) at Orono, June 28, 1918 by Mr. George Blodget. 



Type in collection of the Maine Agricultural Experiment 

 Station, No. 104-18. Apparently the same species was col- 

 lected from hazel bush (Corylus rostrata Ait.) May 29, 1918. 



MACROSIPHUM PSEUDODIRHODUM N. SP. 



Apterous viviparous female : general body color green or 

 pale yellowish white. Frontal tubercles strong, the inner edge- 

 being almost as long as that of I. Relative lengths of antennal 

 segments III to VI indicated by 60, 50, 45, 10+85, ^ with, 

 about 20 sensoria, a few more or less being common, the num- 

 ber being very variable. Cornicle about half the length of 30, 

 slender, pale and distal tip for a short distance with indefinite 

 curved imbrications with serrate edges. 



This species does not seem to have been previously dis- 

 cribed for the rose. It is gregarious on terminal shoot, buds 

 and tender leaves. Apterous females have been collected at 

 Orono, April 12, 1910 on greenhouse roses and July 13, 1915 

 on wild rose on the bank of the Penobscot. 



Type in collection of Maine Agricultural Experiment Sta- 

 tion, No. 78-15. 



MACROSIPHUM GRAVICORNIS N. SP. 



Alate viviparous female: general^ body color varnished 

 green with no conspicuous markings, antennae, legs and cor- 

 nicles black, Cauda pale green, head and thoracic lobes pale 

 brown, wing veins dark but clear cut. Frontal tubercles 



