INSECTS INJURING OAK-LEAVES. 169 
the reniform spot broad, but slightly excavated externally, obscured by the greenish 
discal shade, ringed with black and with a central streak. Transverse posterior 
line intensely black, geminate, minutely dentate. Subterminal and terminal lines 
white, interrupted, dentate between the veins ; fringes whitish, broadly interrupted 
with black at the extremities of the veins; costa with some whitish marks. Hind 
wings gray ; darker along the veins. Disc of thorax whitish gray, with two central 
blackish spots. Tegula) and collar blackish, the latter with a black line and grayish 
above. Expanse of wings, 1.60 inches. (Grote.) 
228. Jpatela brumosa (Guene'e). 
According to Coquillett, the caterpillar of this moth feeds on the plum 
and hazel ; it spins a thin tough cocoon. In Illinois two caterpillars 
assumed the chrysalis state in September, the moths appearing in the 
last week in April and first week in May of the following year. 
Larva.— Body black, marked with a broad yellowish-brown stigmatal stripe; hairs 
in spreading clusters from warts, those upon each end of the body being yellow, the 
rest white ; sixteen legs ; head black ; length 38 mm . 
Guene'e says it lives on the oak and is entirely clear yellow,- with a fine continuous 
blackish dorsal line, and the head of a pale red. The piliferous points in a trapezoid, 
somewhat warty, very small, pale red, and emitting but a single hair. The stigmata 
is circled with blackish. 
Moth. — A little larger than the European A. rumicis, which it somewhat resembles. 
Wings of a little less fuliginous gray, with all the lines and the visible spots black ; 
the orbicular spot quite large, clear, and marked with a central point ; the reniform 
spot very large, and stained in the middle with black. A broad blackish shade, more 
marked even than in A. rumicis, starts from the base of the wing and ends almost on 
the terminal border, being interrupted behind the reniform spot. The fringe is dis- 
tinctly checkered. The small white lunule which we see on the inner margin in 
rumicis, does not here exist. Hind wings of a very clear yellowish-gray, somewhat 
transparent, with the veins more distinct. A feeble cellular lunule, and the fringe 
checkered, outer edge brownish, in the female. (Guene'e.) 
229. Apatela ovata Grote. 
This is a very common caterpillar, feeding on the red and white oak, 
and ranges from Maine to Georgia. It is a peculiar caterpillar, eating 
patches while clinging to the under side of the leaf. It varies much 
in color, some being reddish orange, and pinkish in tint; others dirty 
whitish yellow. In the pinkish specimens the dorsal line of dark dia- 
mond-shaped spots is obsolete. One was yellowish with dorsal brown 
spots; another caterpillar was brown, with ten pairs of bright straw- 
yellow dorsal spots. This singular larva, which differs from most of its 
congeners in being nearly naked, is probably protected from its ene- 
mies, as it lies curled up on the leaf, by its resemblance to a withered 
patch or blotch on an oak-leaf. Et pupated September 19 to 25, not 
spinning a cocoon, and undoubtedly entering the ground. 
We have also found it on Betula populifolia ; and two specimens oc- 
curred on the chestnut ; one of a straw-yellow, the other of a reddish 
tint. The moth was identified for us by Mr. John B. Smith. 
The flattened body, very large head, the dorsal row of short diamond- 
