12 BULLETIN 250, U. S. DEPARTMENT OF AGRICULTURE. 
RED OstER (Cornus stolonifera Michx.). 
In heavily infested territory some of the field observers have found slight 
feeding during the early part of the year. This did not extend beyond small 
holes in the leaves and notches in the edges. | 
In the laboratory each successive larval stage was tried on the foliage and 
no adults were obtained. 
CoTToNWooD (Populus deltoides Marsh.). 
Cottonwood is seldom found in this section, but was tried in the trays in 
order to know whether it is favored in case the moth spread to territory where 
this species is common. 
About 10 per cent of the first-stage larve started on this foliage carried 
through to the second stage, when they all died. At least 10-per cent of the 
third-stage larvze started in trays reached the fifth stage, but no adults were 
obtained. In the early stages the feeding was slight and growth accordingly 
slow, but in the later stages feeding was more free and growth more rapid. 
No observations were made on this species in the field. 
AMERICAN CRANBERRY (Oxycoccus macrocarpus [Ait.] Pursh). 
The larve eat but little of the foliage of the cranberry vines, but cut off the 
stems just above the old growth and also the stems of the flowers or newly set 
berries. (Pl. IV.) The habit of the larve is to feed at night and remain 
secreted during the day. By parting away the vines the larve may be found 
underneath, next to the cool earth, ready to come up when the sun goes down 
to continue the feeding. Bogs that appear to be entirely free of the pest may 
harbor great numbers that will greatly reduce the crop. 
In the trays we failed to obtain adults from larve started in the first stage 
on this foliage. On the bogs, however, was evidence that larve hatched on the 
vines had come through to the adult stage without other food. 
RED CURRANT (Ribes vulgare Lam.). 
Tray experiments failed to produce any adults, although the different stages 
were fed upon the foliage. In the early stages there was more feeding accord- 
ing to size of larve than in the later stages, and the larve lived longer. 
Mr. Schaffner noted very slight feeding on this species in the field. It is 
an unfavored food plant. 
BALD Cypress (TJ'axodium distichum (l.) Rich.). 
Bald cypress was tried with all larval stages in the trays and only a very 
small percentage went through to the next stage. None reached the adult 
‘stage. Feeding was very slight and there was practically no growth. It is an 
unfavored species. 
DANGLEBERRY (Gaylussacia frondosa (l.) T. & G.). 
Larve in the third stage started on this foliage reached the sixth stage. No 
pup were obtained from any stage. 
Mr. Schaffner made observations on this undershrub in the field and in one 
instance notes a defoliation of 50 per cent, but as a rule there is but slight 
feeding. 
