THe Insect FAUNA OF THE GENUS CRATAEGUS 10638 
vulgaris Fb., Lamenia 
The adults of Lamenza vulgaris are 4 millimeters long, bluish gray, and 
rather stout. They are abundant on native hawthorns during the last 
half of June. 
Membracidae 
crataegi Fitch, Glossonotus (Hawthorn tree hopper) 
The adults of Glossonotus crataegi are fairly common on the branches of 
native hawthorns during July and early August. 
flavicephala Goding, Ophiderma 
The adults of Ophiderma flavicephala are 8 millimeters long, are brown 
with a yellowish white stripe on each side and across the rear end of the 
prothorax, and are without ahump. They are rarely found on the branches 
of Crataegus punctatatand C. tomentosa during June. 
taurina Fitch, Ceresa 
The adults of Ceresa taurina are 8 millimeters long, are pale green, and 
have the prothorax prolonged into a horn on each side of the head. They 
are found occasionally on the branches of Crataegus punctata and C. 
neofluvialis in late July and August. No nymphs were reared to the adult 
stage on Crataegus, but several nymphs 
answering the description of this species 
as given by Hodgkiss (1910) hatched 
on April 20 and lived through three in- 
stars on Crataegus punctata foliage. 
Aphididae 
corrugatans Sir., Pemphigus (Woolly 
thorn aphis) 
A few colonies of the flocculent 
greenish aphids of the species Pem- 
phigus corrugatans were found in early 
June on Crataegus punctata. They live 
on the under side of the leaves and curl 
the leaf margins downward. 
crataegt Monell, Macrosiphum 
The apterous females of Macrosi- 
phum crataegi may be found from late 
May until October on the native haw‘ 
thorns at Ithaca, and during July and 
August the species may become so 
abundant as to seriously injure the Fie. 108. MACROSIPHUM GRATAECI 
