On Certain Grass-Eating Insects. 

 Trap-Lantern Record. C.floridus, 1889. 



79 



The moths fly the greater part of June and July, though they 

 are not abundant at any time. The insect is confined to high, 

 rather dry land. 



The species does not seem to be very prolific. The eggs hatch 

 in about ten days. The young larvae eat holes through the 

 leaves or feed upon the edge of a leaf. In about two weeks the 

 body becomes a dark mottled brown. At this time they establish 

 themselves in the axil of a leaf or upon its flat surface; here they 

 spin a slight web and soon construct a nest with an outer layer of 

 bits of grass. The larvae remain in these retreats when not 

 feeding. 



Egg. — Creamy white when first laid, gradually turning to a dark scarlet 

 color before hatching. Form elliptical oval ; size ,39 mm. by .30 mm. 

 The egg-shell has sixteen feeble longitudinal ridges and numerous smaller 

 transverse ridges. 



Larva, first stage. — Head diameter .21 mm.; body diameter .15 mm.; 

 length 1. 15 mm. Head black, labrum yellowish, scattered hairs occur on 

 the head ; thoracic shield a dark brown ; body a straw color with fine reddish 

 blotches giving it a pinkish cast. Scattered hairs grow from small dark 

 tubercles. 



When about two weeks old the body is a dark mottled brown. When a 

 month old the larva is i cm. long. 



26. The Paneled Crambus. 



Cranibus laqueatellus . 



PLATES IV., XI., XII., XIII., Fig. 26. 



This species was very abundant in Ithaca in 1893. It is one of 

 our largest species. The moth may be recognized by the two 

 white stripes extending the greater length of the fore wing and 

 separated by a brown stripe of almost equal width. The ground 

 color of the fore wing is brown. This insect is equally abundant 



