-196- 
COCKSCOMB ELM GALL (Colopha ulmicoja Fitch) 
Indiana j % J. Davis (July 22): The cockscomb elm gall, mostly Colopha 
ulmicoia , has been received from all parts of the State the past 
month* ■ ■ ■ y 
■•"■ HICKO RY . 
A BORER (Agrilus arcuatus Say) 
West Monthly Letter-. of the Bureau p£ Entomology, No. 122. (June 192U): 
Virginia Fred u« Brooks, in charge of the Bureau's laboratory at French 
Creek, W. Va, writes as follows: "Serious injury to young 
shargbark hickory and pecan trees by Agr ilus arcuatus Say has been 
observed recently in several localities. The larva spends two 
years in the wood and twice during its life severs the branch 
or trunk in which it is working. Wood frcm half an inch to 
slightly more than an inch in diameter is entirely severed, except 
the bark, and the part .above dies.. • In one block of young hickory 
trees in a nursery in Virginia the writer estimated that a hundred 
dollar's worth of trees had been ruined. Injury very similar 
in nature and extent to that described above is being done by 
larvae of . Pseud ibidion un icolor . This species attacks small 
hickory and' pecan trees and also severs branches of larger trees. 
In a pecan grove at Petersburg,, .7a, , many fruiting branches were 
breaking during the month of May as a result of cuts made by the 
larvae of this species. 
.:".' SUGAR- MAPLE 
MAPLE BORER (Glvcobius speciosus Say) 
New Hampshire P. R. Lowry (.July 9): Sugar-maple shade trees have been severely 
damaged. Adults are now. present in large numbers at Durham. 
COTTONY MAPLE SCALE ' (PulviharJa vitis L. ) 
Indiana J. J. Davis (July 22): The cottony maple scale continues to appear 
in some localities in abundant and destructive numbers, but apparently 
is not as abundant as the past ;f ew years. 
OAK 
OAK PRUNER (El aphid ion vi llosum Fab.) 
Michigan R. H. Pettit (July 22): The oak-twig-pruner is attracting more 
attention than usual this year. 
pine ' 
PINE SCALE ( Chionaspis pinifoliae Fitch)' 
Indiana H. F. Dietz (July 11): .The pine scale continues to be one of the 
worst pests of the various kinds of pines and spruces that are used 
in ornamental planting. The. hatching of the eggs of this scale 
tcckplace during the first week in June and owing to the excessive 
rainfall the young scales did not have an opportunuty to crawl 
