INSECTS AFFECTING FOREST TREES. 525 



of yi an incli. July 23d a molt occurred, and the caterpillars were then coal black 

 with bright red longitudinal stripes, and the thoracic horns were considerably longer 

 than in the preceding stage. Four days later larvae were observed in at least three 

 different stages and clumps of oaks were easily found at Karner wliere the entire 

 shoot had been defoliated. The )-ounger caterpillars were frequently clustered on 

 the under surface of the leaves, plate 16, figure 5, and the larger ones at this time 

 measured about i inch in length. September 6th practically all of the larva; had 

 disappeared and the pupal stage was assumed. 



Description. The moth is a bright yellowish-red insect, its front wings specked 

 with black dots and with a rather large white spot near the middle. The female has 

 a wing spread of about 2J.3 inches, and the male about xlA. The latter is darker in 

 color and has its antennas broadly pectinate for more than one-half their length, 

 plate 16, figures 6, 7. 



Natural Enemies. This species is the prey of a number of natural enemies. Its 

 spines probably serve to protect it to some extent from insectivorous birds, but 

 Prof. A. J. Cook has recorded the robin and blue jay as feeding upon it. One 

 Hymenopterus parasite, Liiiincria fugitiva Say, has been bred from this insect. Dr. 

 Lintner records the rearing of another parasite from this insect, but unfortunately 

 has not given its name. 



BUCK OR MAIA MOTH. 



Heniileiica iiiaia Drury. 



This very pretty moth is relatively rare and its small black spiny caterpillar may 

 sometimes be met with in early summer feeding in company upon the leaves of 

 various oaks, particularly on those in swampy places. This insect occurs in similar 

 locations to those jjreferred by the yellow striped caterpillar, Aiiisota scnatoria Abb. 

 & Sm., and has been rarely met with by the writer. 



/,//'(• History. The moths begin to issue from the ground late in September or 

 early in October, deposit their eggs in small belts encircling twigs, where they 

 remain during the winter. The young hatch about the latter part of May and 

 attain maturity about the middle of July whe!\ they enter the ground, pupate and 

 appear as stated above. This species feetls upon a number of different oaks and 

 has also been recorded on scrub willow, hazel and wild black cherry. 



Description. The moth is a beautiful blackish insect with wings so lightly covered 

 with scales that they appear semi-transparent. They are ornamented with creamy 

 white bands which are broadest on the hind wings, plate 16, figure 9. The eggs 

 are deposited in belts from Y^ to a little over j/^ of an inch in length, containing 



