325 



oblique, dusky, apical line. We are inclined to think that it is 

 simply a variety of A. vernata. Harris has detected an ich- 

 neumon parasite which preys upon the canker worm, and a 

 species of Tachina also attacks the caterpillars, and we have 

 noticed a minute species of Platygaster (Fig. 134), first dis- 

 covered by Herrick, ovipositing in its eggs. The Calosomas 

 also devour them, and probably other ground beetles ; and cer- 

 tain wasps (Eumenes) store their nests with them. (Harris.) 



Allied to the canker worm is the Hybernia tiliaria Harris, the 

 male of which is much larger and has feathered antennae. The 

 female is larger and slenderer than that of the canker worm, 

 and along the back are two rows of black dots on a pale gray- 

 ish ground. The moth flies late in the autumn. The larva is 

 bright yellow, with ten crinkled black lines along the top of the 

 back, and is an inch and a quarter in length. It feeds on the 

 lime, apple and elm, and is sometimes very destructive. 



Eupithecia is a diminutive form, with very small rounded 

 hind wings, while the fore wings are much elongated towards 

 the apex, and at rest both pairs are spread out and pressed 

 closely to the surface on which the moth rests. The larva is 

 rather short, stiff, often marked with dorsal lozenges, and the 

 head is small and rounded. It feeds on trees or low plants ; 

 sometimes on seeds of plants. The pupa is slender, conical and 

 pointed. E. miserulata Grote is clear silky grayish, with a 

 black interrupted outer line and a grayish fringe, interrupted 

 with black. 



Cidaria numbers many species in which the antennae of the 

 male is simple or slightly pubescent, and the fore wings are 

 rather pointed at the tip, while the hind wings are rounded. 

 The larva is elongate and slender, with the head often notched. 

 It feeds on trees or shrubs, and the pupa is of variegated 

 colors. Cidaria diversilineata Hiibn. (Plate 8, fig. 10, 10a, 

 larva) is yellowish ochreous, with brownish angular lines, and 

 at rest the abdomen is curved over the back. Mr. Saimders 

 has found the larva feeding on the woodbine. According to 

 his notes "the body above is dark brown, with a slightly 

 reddish tint, and patches of a darker shade along the dorsal 

 region, being the color of the twigs of its food plant. It 

 remains in the pupa state about a week." We have also 



