FOOD PLANTS OF THE GIPSY MOTH IN AMERICA. 11 
In the trays, both at Melrose Highlands and Worcester, adults were reared. 
The larve thrived about the same as on wild red cherry and were of fair size. 
This species appears to be the most favored of the cherries. 
SWEET CHERRY (Prunus avium L..). 
Trays started with newly hatched larve, both at the Worcester and Melrose 
Highlands laboratories, produced moths. The larve fed very slowly, especialiy 
in the later stages, and were of small size. 
Mr. Shinkwin observed a single roadside tree in a badly infested area that 
was hearly defoliated by third and fourth stage larve. 
WILD BLACK CHERRY (Prunus serotina Ehrh.). 
Adults were obtained from first-stage larvee started in trays. These larvie 
grew very slowly and were only about one-half normal size. 
From all sections the observation is made that there is little feeding and by 
all stages. Mr. Shinkwin notes a case in a heavy infestation where wild black 
cherry was nearly defoliated. 
WILp RED CHERRY (Padus virginiana (L.) Mill.). 
This cherry was fed upon very slightly by the gipsy-moth larve, usually in 
the first two stages and very slightly in the third. The blossoms were attacked 
more than the leaves. 
In the trays at Melrose Highlands adults were secured from first-stage larve. 
They fed sparingly and grew very slowly. 
CHESTNUT (Castanea dentata [Marsh.] Borkh.). 
This species has been observed by all the field men, and they agree that 
gipsy-moth larvee feed upon it to a limited extent in all stages except the first. 
If favored food plants are abundant, the larve soon confine their attention to 
these plants. Where the infestation is heavy and the favored food is consumed 
- the chestnuts are sometimes stripped. 
In the tray work at both laboratories ho first-stage larve started on this 
foliage went through to the second stage. Second-stage larve fed and adults 
were secured. 
CHOKEBERRY (Aronia melanocarpa [Michx.] Britton). 
First-stage larvee fed freely on this species in the trays and produced adults. 
A small amount of feeding was noted in the field, mainly on the blossoms. 
CoRNUS (Cornus sp.). 
Mr. Proctor notes pinhole feeding on this species in the field, but the other 
observers do not record any feeding in the other sections. 
In the trays none reached the adult stage, although tried with the different 
stages of the larve. It is an unfavored species. 
FLOWERING Docgwoop (Cynoxylon floridum [l.] Raf.). 
This species was tried in the laboratory at Melrose Highlands with each 
successive stage of gipsy-moth larvee and none reached the adult. More feed- 
ing was noted on the flowers than on the leaves. In the field, even in badly 
infested territory, only very slight feeding was noted. It is an unfavored 
species, 
