8 BULLETIN 1223, U. 8S. DEPARTMENT OF AGRICULTURE. 
In this stage one is able to distinguish the difference in sexes by th 
number of antennal segments. Antenne of male larva 7-segmented, first seg- 
ment broadest and seventh longest (Pl. III, B). Female larva with 6-segmen 
antenne, quite similar to those of male, except that third and fourth segments 
have been replaced by one long segment, practically equalling the other two 
CesT, C). 
Both sexes have pores of the quinquelocular type (Pl. III, #) 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. III, @), 
and are presumably the ones used in secreting the wax to form the pupal 
cocoon. 
ADULT OR THIRD-STAGE FEMALE (PL. I, D, FE). 
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 1.8 millimeters. Antenne 
(Pl. III, D) distinctly 7-segmented, third and fourth segments longest, fifth 
and sixth shortest. Previous writers have not always agreed upon the number 
of antennal segmen.s possessed by the adult female. In some species the 
number is not constant; however, all western specimens examined possessed ~ 
7-segmented antenne. 
Usual coccid mouth parts and two pairs of thoracic spiracles present. Legs 
(Pl. III, J) rather long and slender. Anal ring compound, bearing eight 
sete, and situated between two prominent lobes (Pl. III, H), each bearing 
three dorsal spines and one termina! and two ventral sete, 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. III, #) on venter. 
Large circular pores (Pl. III, G) occur on dorsum and margin of body, 
being more plentiful on latter. These communicate with internal -cylin- 
Grical ducts which bear cup-shaped depressions on their inner ends. There 
are also a few very smail circular pores on the margin of the body communi- 
eating 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. Antennze and-legs not now long and slender, but short, thick, and 
immovable. Antenns# 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. 
Antenne 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- 
tennze. Eyes black, with usual dorsal pair present and one ventral pair 
replacing mouth parts. Antenne 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 set#. Two large setz# on each outer lobe surrounded with a number 
