REPORT OF STATE ENTOMOLOGIST 1899 581 
Tremex and occasionally found with the ovipositor stuck in the 
wood. The white legless grubs attach themselves to the borers and 
suck their life out. Zhzs insect should therefore be protected. 
30 Cottony maple tree scale insect (Pulvinaria innumer- 
abilis). Under side of smaller limbs sometimes festooned with this 
cottony insect, though more frequently it occurs in small masses. Young 
appear in July. 
Treatment: spray young with kerosene emulsion or whale oil soap 
solution. Brush or scrape off and destroy old scales. 
31 Sugar maple borer (Plagionotus speciosus). 
Diseased or loose bark and exposed dead wood indicate the work of 
this pest. The grubs frequently cause serious injury by running trans- 
verse burrows just beneath the bark. The stout, black beetles, about 1 
in. long with bright yellow markings, occur from June to August. 
Treatment: burn badly infested trees. Dig out the young borers in 
the fall. Protect trees with carbolic soap wash from June to August. 
32 Maple tree pruner (Elaphidion villosum). Small 
limbs of maple, oak and other trees nearly eaten off by an insect and 
dropping in September, usually contain the burrows of this species. 
Treatment: collect infested limbs on the ground and burn before 
spring. — 
sor Eimeleah beetle, (Galerucella luteola). Irregular 
round holes eaten in young foliage followed by the grubs gnawing the 
under portions of the leaves, which then dry and turn brown. The yel- 
lowish, black-striped beetles, about 1 in. long, appear in early spring 
and lay eggs in May. The grubs feed in June, changing to yellow 
pupae the latter part of the month. A second brood occurs in July and 
extends into September. Known in this state only on Long Island and 
in the Hudson river valley. 
Treatment: spray foliage of infested trees with poison, which must be 
applied to under surface of the leaf in order to kill the grubs. Kill 
larvae and pupae on and near trunks of the trees. 
34 Elm bark louse (Gossyparia ulmi). Adult females in 
June appear like clusters of small lichens on the under side of the 
smaller limbs of European elms. Young emerge in July. 
Treatment: spray with kerosene emulsion or whale oil soap solution, 
35 Elm borer (Saperda tridentata). Diseased or dead 
bark, and in inner portions white, flattened, legless grubs, which frequently 
