INSECTS INJURIOUS TO THE RUTTERNUT. 89 
and various garden vegetables, and we have found it from the first to 
the middle of September in Maine feeding on the buckthorn and also 
the pitch-pine. According to Harris there seems to be two broods of 
caterpillars and two of the 
moths. The caterpillars, he 
states, “are to be found of f 
different ages and sizes from 
the first of June till October. 
When fully grown they are 
about two inches long, and 
then creep into some conven- 
ient place of shelter, make 
their cocoons, in which they 
remain in the chrysalis state 
during the winter, and are 
changed to moths in the Fic. 39.—c, Virginia tiger-moth; a, its caterpillar; b, chrysa- 
months of May or June fol- lis, all nat. size.—After Riley. 
lowing. Some of the first broods of these caterpillars appear to come 
to their growth early in summer, and are transformed to moths by the 
end of July or the beginning of August, at which time I have repeat- 
edly taken them in the winged state; but the greater part pass through 
their last change in June.” I have observed the full-grown caterpillar 
at Brunswick, Me., the first and second weeks in August; they spin 
trom the middle of August till September. The following description 
of the caterpillar is taken from my notes: 
The caterpillar.mHead of moderate size; body cylindrical, rather short and not very 
convex; each segment with four tubercles above, two smaller median ones being 
situated in front of and between two latero-dorsal larger ones; three tubercles on 
each side of each segment, all giving rise to dense verticils of long uneven fox-yellow 
hairs; most of the hairs are as long as the body is thick, while others on the back 
are twice as long, so that in outline the larva is an elongated ellipse, the head and 
tail being alike concealed by the spreading hairs. The body and head is black or 
yellowish mottled with black. The hairs are tawny yellow, while the short hairs on 
the sides of the thoracic rings are black. 
The moth.—Snow white, with a black dot in the middle of the fore wings and two 
on the hind wings; a row of black spots along the back of the abdomen and a row 
along the sides, between the latter dots a longitudinal deep yellow stripe; the basal 
joints of the fore legs are yellow. The wings expand about two inches. The eggs 
are said by Harris to be golden-yellow, and to be laid in patches on the leaves of 
plants. 
Besides this moth the following Lepidoptera occur at times on the 
butternut : 
10. The hickory tussock moth, Halesidota carye, Brunswick, Maine. 
11. The vaporer moth, Orgyia leucostigma. 
12. The fall web-worm, Hyphantria textor. (See p. 67.) 
13. The Luna moth, Actias luna (Linn.). (See p. 76.) 
14. The Cecropia moth, Samia cecropia. , 
