8 BULLETIN" 1223, TJ. S. DEPARTMENT OF AGRICULTURE. 



In this stage one is able to distinguish the difference in sexes by the 

 number of antennal segments. Antennae of male larva 7-segmented, first seg- 

 ment broadest and seventh longest (PI. Ill, B). Female larva with 6-segmented 

 antennae, quite similar to those of male, except that third and fourth segments 

 have been replaced by one long segment, practically equalling the other two 

 (PI. Ill, C). 



Both sexes have pores of the quinquelocular type (PI. Ill, E) on the venter, 

 but only the male larva has large circular pores on the dorsum and margin 

 of the venter. These circular pores communicate with internal cylindrical 

 ducts, which bear cup-shaped depressions on their inner ends (PI. Ill, G), 

 and are presumably the ones used in secreting the wax to form the pupal 

 cocoon. 



Adult ok Third-Stage Female (Pl. I,D,E). 



Female dull red-brown or green-brown after molting, elliptical in outline, 

 later becoming oval and at the same time forming a waxy fringe about the 

 margin of the body. Upon becoming engorged with eggs the adult female 

 attains a length of 2.1 millimeters and a width of 1.3 millimeters. Antenna? 

 (PI. Ill, D) distinctly 7-segmented, third and fourth segments longest, fifth 

 and sixth shortest. Previous writers have not always agreed upon the number 

 of antennal segments possessed by the adult female. In some species the 

 number is not constant ; however, all western specimens examined possessed 

 7-segmented antenna?. 



Usual coccid mouth parts and two pairs of thoracic spiracles present. Legs 

 (PI. Ill, /) rather long and slender. Anal ring compound, bearing eight 

 setae, and situated between two prominent lobes (PI. Ill, H), each bearing 

 three dorsal spines and one. terminal and two ventral seta?, also a number of 

 nodules which are particularly prominent and abundant on the inner surface. 

 Entire dorsum covered with stout blunt spines, arranged as in preceding stage. 

 Small slender spines and pores of quinquelocular type (PI. Ill, E) on venter. 

 Large circular pores (PI. Ill, (?) occur on dorsum and margin of body, 

 being more plentiful on latter. These communicate with internal cylin- 

 drical ducts which bear cup-shaped depressions on their inner ends. There 

 are also a few very small circular pores on the margin of the body communi- 

 cating with small, slender, internal tubular ducts. 



MALE PREPUPA (PL. II, A). 



The second-stage male larva after forming a cocoon molts to a prepupa, 

 which is the first dormant stage of the male. Color brownish red. Length 

 1 millimeter, and width about 0.5 millimeter. Oval in outline with head 

 somewhat pointed. Apex of abdomen 3-lobed, a slender seta occurring on each 

 outer lobe. Antenna? and legs not now long and slender, but short, thick, and 

 immovable. Antenna? indistinctly 10-segmented. Very short wing pads present. 

 No eyes visible and mouthparts lacking. Segmentation of body indistinct. 



MALE PUPA (PL. II, B). 



The second dormant stage of the male is also passed in the cocoon. This is 

 a separate stage from the prepupa, a molt having taken place in between. 

 Brownish red in color, oval in outline, slightly longer (1.1 millimeter), and 

 more slender than prepupa. Top of head more rounded and tip of abdo- 

 men more distinctly three-lobed, central lobe larger and more pointed. 

 Antenna? large and heavy, distinctly 10-segmented, reaching to base of wing 

 pads. Wing pads larger, reaching to middle femora or beyond. Legs more 

 distinctly segmented, longer and more slender, anterior pair folded over 

 " face." Body more distinctly segmented ; mouth parts lacking. 



ADULT MALE. 



Reddish brown in color and longer and more slender than pupa ; 1.3 milli- 

 meters long and 0.4 millimeter wide. Head rounded, truncate between an- 

 tenna?. Eyes black, with usual dorsal pair present and one ventral pair 

 replacing mouth parts. Antenna? rather long and hairy, 10-segmented. Legs 

 long and slender, tibia longer than femur. Caudal end 3-lobed, middle lobe 

 large and pointed, bearing the genital organs; all three lobes bearing a 

 number of seta'. Two large seta? on each outer lobe surrounded with a number 



