234 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 12 



caudad as the first segment of the abdomen. On the ventral surface 

 the rupture is between the maxillae and the first thoracic pair of legs, 

 thence along the suture between the antennae and the wing pads. 



The moths were first observed in the field by the writer on April 30, 

 1915. In 1916 they were first seen on April 17. Specimens were 

 captured June 8, 12, 19, and July 15, 1915, and April 17, 1916. All 

 the observations and captures were made at Ithaca, N. Y. In spite of 

 the large number of tubes found on white pine in this vicinity the 

 moths are seldom taken. 



Our observations indicate that the moths are crepuscular. In the 

 day time they appear sluggish while at dusk they become active and 

 are extremely hard to follow because of their zig-zag flight. In experi- 

 ment cages they avoided the intense light of an electric bulb but 

 appeared to be attracted to a mild light. Several trips were made to 

 a near-by pine wood to study their nocturnal habits under natural 

 conditions but the moths were never observed flying except when 

 disturbed. The writer never succeeded in capturing them with trap 

 lanterns. The averaige length of life as appears from data at hand is 

 approximately eight and one-half days. 



Mating and Egglaying 



The moths could not be reared in suflScient numbers to make a 

 careful study of their mating and egglaying habits. Copulation was 

 observed once, however, and the time occupied was ten minutes. 

 Females confined to cages were frequentl}^ seen pressing the tip of the 

 abdomen against the rib of the pine leaves but all attempts to rear the 

 larvae from the eggs failed. The writer confirmed the identification of 

 the eggs, however, by the dissection of gravid females. 



Description 



The Egg. — The egg is translucent, slightly pointed at the apex and rounded on the 

 opposite side. The average length is 4 mm.; width, .58 mm. 



The Larva. — The shape of the mature larva is roughly cylindrical; length 8 times 

 the width; color greenish-yellow with an indistinct darker green band along the 

 dorsal median line. The head is greenish-brown and is semi-translucent. The patch 

 on the side of the head is dark brown to black. The head is not depressed. The 

 front extends about three-fourths the distance to the vertical angle. The second 

 adfrontal setigerous puncture is present. There are six ocelli; the second and fourth 

 are larger than the others. The sixth is rather close to the fourth and fifth. Prolegs 

 on the 3rd, 4th, 5th, 6th and 10th abdominal segments. The seta on the distal end 

 of the anal process is at least twice the length of the stalk of the anal process. 



Habits of Larvae 



The larvae are active caterpillars. When disturbed they retreat 

 into their tubes; if unable to return they will let themselves down by 



