U. S. DEPARTMENT OE AGRICULTURE. 
Orilla, West Canada (4), and the provinces of Ontario and Nova 
Scotia (15). The writer has collected it in the States of New York, 
Pennsylvania, and Ohio. 
FOOD PLANTS. 
The grapevine was first recorded as a food plant of this species by 
Guenee (3), and the Virginia creeper or woodbine by Saunders (5). 
Vaccinium was given by Guenee as the food plant of his synonym 
gracilineata (3). Packard (16) published a note by Riley which lists 
as food plants the laurel, oak, elm, pear, apple, cherry, and the rose. 
This note states further that the larvae entered the ground June 5, and 
adults emerged November 9. Since this differs so strikingly from 
the habits and duration of the pupal period of the species in question, 
it is obvious that Riley's observations relate to another species. The 
writer has observed it feeding on grapevines (Vitis spp.) and the 
Virginia creeper (Parihenocissus quinquefolia) . 
SYSTEMATIC HISTORY. 
The grapevine looper was figured by Hiibner in 1806 (1) as Petro- 
fhordjlava diversilineata and later (2) was transferred by him to the 
genus Euphia. Guenee (3) placed it in the genus Cidaria. This 
name is used interchangeably with Petrophora in practically all of 
the literature following until Dyar (22) listed it as Eustroma diversili- 
neata Hubn., although Comstock (19) and Hulst (20) had previously 
used this nomenclature. Gumppenberg (17) placed both Petrophora 
and Cidaria in synonymy with Lygris, and listed the species as 
L. diversilineata Hubn. This nomenclature has been followed in the 
most recent check-list of North American Lepidoptera (26). The 
generic name has been spelled Petrofora (10), but this is undoubtedly 
a typographical error. 
There is only one synonym of this species, L. gracilineata Guenee 
(3). This was reduced to synonymy by Packard (8), but was later 
given rank as a variety by Grote (11). 
SYNONYMY. 
1806. Petrophora flava diversilineata Hiibner (1). 
1816. Euphia diversilineata Hiibner (2). 
1857. Cidaria diversilineata (Hiibner) Guenee (3). 
1857. Cidaria gracilineata Guenee - (3). 
1890. Lygris diversilineata (Hiibner) Gumppenberg (17). 
1895. Eustroma diversilineata (Hiibner) Comstock (19). 
COMMON NAME. 
This insect was first called the " grapevine Cidaria" by Saunders 
(12) and because of the wide distribution of his general work on fruit 
insects this name is quite well known. After Cidaria became obsolete 
as the generic name, Lugger (21) called it "the grapevine Petro- 
phora." This generic name has also been superseded. A name 
