Ceratocampidae 
Genus CITHERONIA Hubner 
This genus of large and showy moths is characteristically 
neotropical, having its metropolis in Central America. Three 
species occur in our territory, two of them having an extensive 
northern range. 
(1) Citheronia regalis Fabricius, Plate 1, Fig. 4, larva ; Plate 
X, Fig. 3, 6 . (The Royal Walnut-moth.) 
Syn. regia Abbot & Smith. 
The caterpillar, which is known by boys as the “Hickory 
Horn-devil,” feeds upon a great variety of trees and shrubs, 
showing a decided preference for the walnut and butternut, the 
persimmon, and several species of arborescent sumac (Rhus). 
(2) Citheronia sepulchralis Grote & Robinson, Plate XLI, 
Fig. 5, ? . (The Pine-devil Moth.) 
The larva, which is smaller and more obscurely colored than 
that of the preceding species, feeds upon various species of pine, 
and the insect ranges from the Carolinas northward to Massa¬ 
chusetts along the coast. It is not uncommon in the valley of 
the Potomac, and at Berkeley Springs I have found it abundant in 
the larval state in the months of July and August. 
(3) Citheronia mexicana Grote & Robinson, Plate X, Fig. 
4, $ . (The Mexican Walnut-moth.) 
This species, which is in many respects very closely allied to 
C. regalis f occurs in Arizona, and southward. 
Genus BASILONA Boisduval 
The only representative of this genus within the limits of the 
United States is the species which is illustrated on our plates. 
There are a number of other species, which are Mexican or South 
American. 
( 1 ) Basilona imperialis Drury, Plate X, Fig. 2, ? ; Plate 
XI, Fig. 13, 8 . (The Imperial Moth.) 
Syn. imperatoria Abbot & Smith; punctatissima Neumcegen. 
The larva feeds upon a vast number of trees and shrubs, and 
may almost be described as omnivorous. The larvae are either 
brown or green, the color having nothing'whatever to do with 
the character of the perfect insects, which emerge from the 
pupae. Such cases of dichromatism among larvae are not at all 
uncommon. 
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