Noctuidae 
ramosula, and which is delineated on Plate XX, Fig. 29. It is 
very common in Pennsylvania. 
Genus PYROPHILA Hubner 
This genus is better represented in Europe and Asia than in 
America. 
(1) Pyrophila glabella Morrison, Plate XX, Fig. 32, 
(The Gray Pyrophila.) 
Not nearly as common as the next species, but widely distrib¬ 
uted throughout the United States and Canada. 
(2) Pyrophila pyramidoides Guenee, Plate XX, Fig. 30, $ . 
(The American Copper Underwing.) 
This insect, which is one of the commonest moths in the 
Atlantic Subregion, and ranges westward as far as Colorado, 
conceals itself under the loose bark of trees during the daytime, 
and comes forth at night. It sometimes fairly swarms at sugar, 
and becomes a veritable 
pest to the collector, 
who desires rarer things. 
The caterpillar does a 
good deal of damage to 
vegetation. I have re¬ 
cently been annoyed by 
the ravages inflicted by 
the larvae in the spring of the year upon the foliage of imported 
rhododendrons, for which they seem to have a partiality in my 
garden. They feed freely on a great variety of shrubs and 
herbaceous plants. 
• (3) Pyrophila tragopoginis Linnaeus, Plate XX, Fig. 31, $ . 
(The Mouse-colored Pyrophila.) 
Syn. repressus Grote. 
A circumpolar species ranging throughout the temperate zone. 
Fig. 96. —Larva of Pyrophila pyramidoides. 
(After Riley.) 
Genus HELIOTROPHA Lederer 
The genus is represented in the Atiantic States by a species, 
of which a light and a dark form occur. The typical, or light 
form, was named reniformis by Grote, and is depicted on 
Plate XX, Fig. 33, while the dark form, named atra by the same 
author, is shown on the same plate by Figure 34. 
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