New York AGRICULTURAL EXPERIMENT STATION. 305 
(4) Eriophyes querct Garman. 
Produces galls on the leaves of the bur-oak, Quercus macro- 
carpa Michx. 
(5) Eriophyes ulmi Garman. 
Produces galls on the leaves of the white elm, Ulmus 
americana L. 
(6) Eriophyes abnormis Garman. 
Found on the American linden or basswood, Tilia amer- 
icana L., causing top-shaped galls on the leaves. The galls are 
similar to Ceratoneon extensum Bremi on Tilia platyphyllos Scop., 
produced by Eriophyes. tiliae (Pgst.) Nal., which is common in 
Central Europe. 
(7) Eriophyes acericola Garman. 
Causes fusiform galls on the leaves of the sugar maple, Acer 
saccharum Marsh. The galls resemble Ceratoneon vulgare Bremi, 
produced by Eriophyes macrorhynchus Nal. on Acer pseudoplatanus 
L., growing in Europe. 
(8) Phyllocoptes quadripes Shimer. 
Produces spherical galls on the leaves of soft maple, Acer 
saccharinum L., and is a species of growing importance to shade 
trees. The galls are similar to Cephaloneon solttarum Bremi. In 
Central Europe Eriophyes macrochelus Nal. makes similar galls 
on Acer campestre L. 
(9) Eriophyes vitis Landois. 
Attacks the grape, Vitis vinifera L., and is a serious pest in | 
Central Europe, Italy and California. It is responsible for Phyl- 
lerium vitis Fries. which occurs on grape foliage. 
(10) Eriophyes pyri (Pgst.) Nal. 
A common pest on the leaves of apple, Pyrus malus and 
pear, Pyrus communis L, in Europe and the United States. 
(11) Phyllocoptes schlechtendali Nal. 
On Pyrus malus L., and Pyrus communts L., in Central 
Europe and is very common on apple foliage in the United States. 
(12) Epitrimerus pyri Nal. 
On foliage of pear, Pyrus communis L., in Central Europe | 
and the United States. 
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