78 



white substance in which the larva is enveloped. This covering soon 

 assumes an oval form, and is composed of threads, the inner coat 

 cemented closely together, while the outer threads are irregularly 

 arranged, although the form is retained perfectly. The entire cocoon 

 is held in place by attached threads to the bark or leaf. Inside of the 

 cocoon the larva gradually changes from the wingless insect to the 

 mature or winged state, the rostrum disappears and two wings form. 

 The transformation is gradual, the pupa, Fig. XL, is of a solid red color 

 and measures from 9 to XO millimeters long and 8 to 4 wide. The 

 antennae, eyes and legs change their form and after about fifteen 

 days one end of the cocoon opens and the perfect male comes out; 

 the opening through which it emerges is circular and covers the 

 entire end of the cocoon. 



THE MALE. 



AVhen the male first issues from the cocoon it is inactive and 

 does not fly readily, but after drying the wings by vibrating them, 

 and exercising the other appendages, it is ready for flight and action. 

 The male, Fig. XIL, is very beautiful, the same red color which 

 characterized the larva and pupa remaining in the imago. The insect 

 measures 8 mill, long, exclusive of the penis, and with it 9 millimeters 

 and is nearly 3 millimeters wide across the mesothorax. The wings 

 are large in comparison to the body, the appendages strong and of the 

 same color as the body. 



The head is closely connected with the thorax, is somewhat glo- 

 bular in form and slightly pointed in front. The eyes are situated 

 on each side of the middle, they are nearly round and full, so that 

 they extend over the side of the head thus enabling the insect to 

 see both above and below. Farther back on the head are two more 

 eyes, larger and more prominent than the first pair. They are of a 

 dark reddish brown color, and form a striking contrast to the bright 

 red of the head. The mouth-parts are obsolete in the male, having 

 disappeared during the transition of the matured larva to the imago. 



The antennae are situated close to each other and arise from 

 small tubercular projections, they are jointed, of a reddish cast, 

 and the central part is deeper and darker than the edges. The joints 

 are long and the antenna^ itself is nearly as long as the body, the 

 first or basal joint. Fig. XIIL at 1, is short and stout, having 

 but few fine hairs issuing from the sides, the second joint is 

 something over twice as long as the first joint and, approaching the 

 apex, there is one abrupt enlargement terminating in a squarely cut joint; 

 tliG hairs increase until five and six are found on each side. The 



