25 



gray, varied with dark brown dots and spots and 

 shadings. Near the hinder angle of the front wings 

 is a rather conspicuous spot not very distinctly shown 

 in the figure, resembling the Greek letter psi placed 

 sidewise. There are two broods of this insect during 

 the year ; the moths of the first appear in June, deposit 

 eggs which produce larvae that reach their full growth, 

 pass through the chrysalis stage, and from which moths 

 emerge about the end of July. The second brood of 

 larvae are found about the last of August and through- 

 out September ; they become chrysalids late in the season, and pass the winter in the 

 chrysalis state. 



The Lime-Tree Measuring Worm (Hybernia tiliaria), Har. 



The larva of this insect is a yellowish looper or measuring worm, with a reddish 

 head and ten wavy black lines along the back. It is shown in fig. 7 in different positions. 



Fig. 6, after Riley. 



Fig. 7, after Comstock. 



It is hatched early in the spring, and completes its growth about the middle of June, 

 about which time it is often very destructive to basswood, elm, hickory and apple trees. 

 When ready for its next change the larva lets itself down from the tree by a silken thread 

 and buries itself five or six inches below the surface of the ground, and there changes to 

 a chrysalis from which the moth usually escapes the following spring. Occasionally some 

 of the moths appear in October or November, but this rarely occurs with us. 



The male moths have large and delicate wings and feathered antennae, as seen in the 

 figure. The fore wings, which measure when spread about an inch and a-half across, are 

 of a rusty buff" colour, sprinkled with brownish dots, with two transverse wavy brown 

 lines and a central brown dot. The hind wings are pale with a brown dot about their 

 middle. 



The female, also shown in the figure, is a wingless, spider-like creature, with slender, 

 thread-like antennae, yellowish white body, sprinkled on the sides with black dots, and 



