MORSE: ORTHOPTERA OF NEW ENGLAND. 
309 
females, and young were present in large numbers on the shore of 
Grand Isle in Lake Champlain, Vt., under fragments of rock and 
boards in the near vicinity of camp cottages. Blatchley says that 
it is the commonest native Roach in Indiana, where adults may be 
taken from May 5 till October. "As the long-winged males are 
attracted by light, country houses are often badly infested with 
them; and where food is scarce, the wall paper is sometimes much 
injured for the sake of the paste beneath. What the hordes of 
young which dwell under the bark of logs live upon is a question 
as yet unsettled, but the larvae of other insects undoubtedly form 
36 37 
Fig. 36. — Pennsylvania Wood-roach, Parcoblatta pensylvanica. Male. (After Lugger.) 
Fig. 37 .—Parcoblatta pensylvanica. Female. (After Blatchley.) 
a portion of their food, as in two instances I have found them 
feeding upon the dead grubs of a Tenebrio beetle; while living as 
well as decaying vegetable matter probably forms the other por- 
tion. The mating of the imagoes probably occurs in late spring or 
early summer, the newly hatched young being most abundant 
from mid-August until December. Females with ootheca pro- 
truding have been taken as early as May 19th and as late as 
September 3d. The young in various stages of growth survive 
the winter in the places mentioned, they being the most common 
insects noted in the woods at that season. Cold has seemingly 
but little effect upon them, as they scramble away almost as 
hurriedly when their protective shelter of bark is removed on a 
day in mid-January with the mercury at zero, as they do in June 
when it registers 100° in the shade" (Blatchley). 
