LOCUST SCALE-INSECT. 371 
21. Cymatophora crepuscularia Tr. 
Order Lepidoptera ; family Phal,entd.e. 
Larvae from which the above was bred were taken on white clover 
at Normal, June 21, the imagos emerging July 10. 
Larva. — One inch long, slender, with only four prolegs. The head is widely bilobed 
and reddish brown above, yellowish varied with reddish brown in front, with two 
small approximate black spots on the middle of the front. The body is green, thickly 
covered with white granulations, with some black ones intermixed, and has an ob- 
scure reddish dorsal stripe. The posterior margins of the middle segments are nar- 
rowly bordered with yellow. On the penultimate segment is a large transverse 
blackish spot, with two small kidney-shaped yellow spots near its middle, approach- 
ing each other posteriorly. The legs are pale brown, blackish at base ; prolegs black 
without, pale within ; spiracles brown. 
The same larva occurred in our collections on the rose and the com- 
mon locust ; taken from the former June 20, and from the latter July 
4. We also collected it July 25, from the box elder (Negundo aceroides), 
the specimen pupating August 4 and emerging August 13. It has 
been found preying on the clover by Professor Forbes (Third Rept. 
Ins. Illinois). 
22. A Deltoid larva. 
A pale green caterpillar was observed at Brunswick, August 21, feed- 
ing on the under side of the leaf, and easily escaping detection since it 
was of the same hue as the under side of the leaf. September 14 it had 
made an oval-cylindrical cocoon iu the soil at the bottom of the breed- 
ing box, the pupa being of the usual mahogany brown color. 
Larva. — Pale green; body slender cylindrical, of the usual Hypeua-like shape. Head 
as wide as the body, smooth, pale green ; a dark green dorsal median line ; a narrow 
thread-like subdorsal white slender line, and a much broader one lower down. All 
the legs green, thoracic ones a little chitinous at the end. The dorsal tubercles 
arranged in a trapezoid, but they are minute and give rise to very slender inconspicu- 
ous hairs. Length 17 mm . 
23. Macrobasis unicolor (Kirby). 
Dr. John Hamilton states that a nursery of young locusts was almost 
defoliated in July .by swarms of this beetle. (Can. Ent., xxi, 103.) 
24. The rapacious scale insect, 
Aspidiotus rapax Comstock. 
Like the pernicious scale insect (Aspidiotus -perniciosus) this species 
infests many different plants ; and sometimes it occurs in such great 
numbers as to be very destructive. This is especially the case on ever- 
greens in hot-houses in the North or in the open air in the South ; and 
in California on olive and mountain laurel ( Umbellularia califomica). 
1 have also found it on the following-named plants in California: Al- 
mond, quince, fig, willow, eucalyptus, acacia, and locust. (Comstock). 
