PINE INSECTS. 809i 



twigs that the bases of the leaves are completely covered. The imma- 

 ture insects are not so easily seen with the unaided eye, as they difler 

 but little in color from the tree. They are greenish yellow, and are 

 usually to be found in the angles formed by the bases of the leaves. 

 The larvje of both sexes and the adult females are similar in form (see 

 Plate X, Fig. lb). The posterior end of the body is furnished with two 

 prominent lobes, each terminated by a long hair. Between these lobes 

 there is a conical mass of white waxy matter projecting backwards. 

 The margin of the body is fringed with a row of tubular spinnerets. 

 These spinnerets are more numerous on the adult female than on the 

 larva ; in both stages each one is covered with waxy matter, which 

 often extends beyond the end of the spinneret. Excepting these filaments 

 and the caudal tuft, but little excretory matter is to be seen ; so that al- 

 though the insect resembles a mealy bug in the form of its body it differs 

 greatly in appearance. The female when full grown measures 2.3™™ 

 (.09 inch) in length. When the female is ready to lay her eggs she ex- 

 cretes a cocoon-like covering to the body, composed of white waxen 

 threads (Fig. 1). This sac is dense like felt, but ea-sily torn ; it is open 

 on the middle Hue of the ventral surface or very much more delicate on 

 that part. It adheres to the tree quite firmly, remaining where excreted 

 after the death of the insect. As the eggs are laid, the body of the 

 female shrinks away, making room for them, and finally it becomes a 

 very small pellet in the anterior end of the sac, the remainder of the 

 space being filled with eggs. These are light yellow in color. When 

 the male larva is ready to undergo his metamorphoses, he secretes a 

 covering to his body resembling the sac excreted by the female, except 

 that it is very much smaller, measuring only 1.33™"^ (.05 inch) in length 

 (Fig. 1). From this sac the adult insect emerges as a delicate fly- like 

 creature, with two large wings and a pair of long waxen filaments pro- 

 jecting from posterior part of the abdomen ; these filaments are very 

 conspicuous, being white and longer than the body of the insect. (See 

 Plate X, Fig. la.) 



" Color of body white with many irregular brown markings. 



" I have not sufficient data to ascertain the number of generations of 

 this insect each year. August 27, 1 found specimens in all stages of de- 

 velopment." (Comstock.) 



The following insects also occur on the pine ( W. H. Harrington, Trans. 

 Ottawa Field Nat. Club, No. 2, p. 33) : 



Order Coleoptera. 



152. Buprestis consularis Gory. 



153. Asemum atruni Mauuh. 



154. Callidium janthinum Le C. 



155. Atimia confusa Say. 



156. Cryptocephalus notatus Fahr. 



