326 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. U 
were again gathered from trees. Puparia were sieved from the sand 
on August 13-27. This year, however, the puparia were kept in dry 
sterilized sand but not a single fruit fly emerged during the following 
spring. No flies issued during the second year and in all probability, 
the dry sand was unfavorable for the development of the trypetids. 
Choke cherries ( Prunus virginiana L.) were gathered on August 
13-18, 1914, but not a single puparium of Rhagoletis fausta was ob¬ 
tained from this material. 
Several quarts of cultivated cherries were purchased from owners 
who had a few trees in their dooryards in the residential section of 
Orono, and one quart was obtained from Hampden, Maine. These 
ripe sour cherries were placed in breeding jars on July 7-30, 1915. 
A few plum curculios ( Conotrachelus nenuphar Herbst.) but no speci¬ 
mens of Rhagoletis fausta were reared. No adults of this trypetid 
emerged in four cages covering thirty-six square feet of soil below three 
cherry trees in two dooryards. It is not to be inferred, however, from 
what little work which we carried on, that this fruit fly does not at¬ 
tack cultivated cherries in Maine. 
It may be of interest to compare the geographical distribution of the 
wild cherry ( Prunus pennsylvanica L.) in Canada and the United 
States with the present known distribution of Rhagoletis fausta . 
Sargent (15, p. 522) gives the distribution of Prunus pennsylvanica 
as follows: “Newfoundland to shores of the Hudson’s Bay, and west¬ 
ward in British America to the eastern slopes of the coast range of 
British Columbia in the valley of the Fraser River, and southward 
through the northern states to Pennsylvania, central Michigan, 
northern Illinois, central Iowa, and to the high mountains of North 
Carolina and Tennessee, and on the eastern slopes of the Rocky Moun¬ 
tains of Colorado; common in all the forest regions of the extreme 
northern states, growing in moist rather rich soil; often occupying 
to the exclusion of other trees large areas cleared by fire of the original 
forest-covering; common and attaining its largest size on the western 
slopes of the Big Smoky Mountains in Tennessee.” In regard to the 
vertical distribution, Rydberg (14, p. 193) states that Prunus penn¬ 
sylvanica occurs at an altitude of 4,000-9,500 feet in Colorado. 
According to Csesar and Spencer (5, pp. 6-7) “British Columbia 
and Ontario are the only two provinces in Canada” from which 
Rhagoletis fausta has been reported. Chagnon (6, p. 14), however, in 
his “Preliminary List of Canadian Diptera” records Rhagoletis fausta 
from the vicinity of Montreal, Quebec. 
In the United States, Rhagoletis fausta has been recorded from the 
states of New Hampshire and New York. According to Osten Sacken 
(12, p. 346) the male and female specimens from which the original 
