652 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
INSECTS INJURING THE HONEY-LOCUST. 
QlediUekia triacanthos. 
AFFECTING THE LEAVES. 
1. 8phingioampa bicolor (Harris). 
The habits and transformations of this fine moth have been studied 
by Dr. H. S. Jewett at Dayton, Ohio. (Papilio, ii, 38.) He says the 
Larvse change only in size during the last molt, and are from 2 to 2£ 
inches long when fully grown. They began to quit feeding on the 20th 
of June, entering the ground within a few hours after ceasing to eat. 
There they pupated within an oval cell lined with a thin cocoon of 
silk, the first castiug its skin on the 24th. The moths began to appear 
July 3 and had nearly all emerged by July 10. The insect is three- 
brooded in Ohio, hibernating in the pupa state. Besides feeding on 
the Gleditschia, they also devour the leaves of the Kentucky coffee 
tree (Oymnocladus canadensis). Mr. Pilate has also bred it from the 
honey-locust. 
Egg.— Smooth, pale green. 
2. Pempelxa gleditachiella Fernald. 
Order Lepidoptera; family PYRALiDiE. 
The following account of this insect is taken from Professor Corn- 
stock's Report for 1879. 
A large number of larvae, in different stages of growth, were found August 12, 
drawing together and feeding on the leaves of the honey-locust (Gleditschia triacan- 
tho8) on the department grounds. The general color was greenish yellow, though 
there was considerable variation among them. These larvae transformed to pupa? 
from the 3d to the 15th of September. When full-grown they descend to the surface 
of the ground, where they spin a loose cocoon of coarse gray silk, which is com- 
pletely covered with fragments of dried grass, leaves, or other substances, which so 
conceals them that they are difficult to be found. Two of these moths emerged in 
the latter part of September, but the most of them during the last half of the fol- 
lowing May and early part of June, so that it is more than probable they pass the 
winter in the pupa state on the ground under the trees. 
We give below a description of the species by Prof. C. H. Fernald : 
Head, palpi, antennae, thorax above and beneath, legs and forewings light ashy 
gray. Most of the examples have a purplish tint on all these parts, deepest on the 
thorax above and basal portion of the forewings. A black dash broken in the middle 
crosses the thorax behind the middle, starting from under the patague on either 
side. Forewing with a broad black baud crossing it at the basal third, which con- 
sists of three or more liues of raised black scales, the outer one curving obliquely 
across from the costa to the median vein, sometimes a little beyond, then inward to 
vein 1, where it forms an obtuse angle, the apex pointing towards the base of the 
wing ; then outwardly, taking the same general course as the first part of the line, 
to the inner border; within this, and separated by a very narrow line of the general 
color of the wing, are two diffuse black lines of raised scales; the inner one seems 
to fuse with the one bevond before reaohins the costa. This baud is followed bv a 
