Jan. 15,1925 
iScale Insects of the Subfamily Ortheziinae 
111 
some other members of the genus, 
with a lateral chitinized wing on each 
side, the chitinization anteriorly and 
posteriorly indistinct or wanting and the 
pore bands on each terminating well short 
of the median longitudinal line, particu¬ 
larly posteriorly, and not angulate 
within; with the usual 6 anal ring setae. 
Larva. —Stout oval, tapering slightly 
at each end, length when mounted 410 
microns; width 311 microns; antennae 
6 -segmented, apical much the longest; 
beak relatively large, stout conical; 
legs not unusual, tarsal claw with 2 
fairly distinct denticles; body spines 
Fig. 5 —Orthezia spp., outlines of average body spines (d = 
dorsal, o = ovisac band, v= ventral abdominal, s = spiracular 
collar, a = near anal ring), all X 720: A, annae; B, orfm- 
isiae; C, balloui; D, boliviano,; E, caudata; F, cheilanthi; G, 
galapagoensis; H, garryae; I, graminis; J, grandis; K, insignia; 
L, lasiorum; M, longipes 
2.5 millimeters; width about 2.25 milli¬ 
meters; body broad, tapering more or 
less distinctly anteriorly, but with the 
head broadly rounded; derm mem¬ 
branous except for a small, but fairly 
distinct, chitinized thickening along the 
outer margin of each half of the anal 
ring; antennae normally 8-segmented, 
average lengths of the segments of one 
in microns as follows: I, 143; II, 129; 
III, 161; IV, 111; V, 136; VI, 96; VII, 
89; VIII, 171; eyestalk broad at base, 
tapering strongly to beyond middle, 
with apex short, cylindrical, rounded 
at tip; legs characteristic for the genus, 
tarsal claw with 2 indistinct den¬ 
ticles; beak about 268 microns 
long and 239 microns wide, 1-seg- 
mented but with a faint sugges¬ 
tion of a joint about one-third of 
the length from the base; each of 
the thoracic spiracles with a loose 
double band of very short, 
bluntly triangular spines around 
its opening, these spines differing 
conspicuously from the normal 
body type; with 8 pairs of much 
smaller, simple, tubular, abdomi¬ 
nal spiracles; derm pores of the 
quadrilocular disk type only, 
varying slightly in size and 
appearance and occurring chiefly 
in the dorsal and ventral abdomi¬ 
nal regions, most abundant along 
and within the inner margin of 
the ventral ovisac band, penetrat¬ 
ing this in some places as much 
as one-third of its total width and 
forming a band 3 or 4 deep within 
the ovisac band; body spines 
arranged in bands and clusters 
approximately as shown in the 
figure, the median dorsal ab¬ 
dominal bands strongly attenu¬ 
ated laterally, the inner 15 to 20 
spines of each of the 2 clusters 
immediately anterior to the anal 
ring conspicuously shorter than 
the remaining spines in these and 
the other bands; dorsal spines 
and ventral thoracic spines ap¬ 
proximately the same in size and 
shape, more or less distinctly curved, 
tapering from base to apex; spines in 
the broad ovisac band and the 5 ventral 
rows inclosed by this band plainly, 
but not conspicuously^ smaller and more 
slender than the'dorsal spines, lateral 
and posterior portions of ovisac band 
more or less distinctly divided into 
several sections by transverse clear 
spaces each bearing an irregular row 
of disk pores; anal ring only fairly 
well developed as compared with 
both dorsally and ventrally rather 
abundant, arranged in transverse rows, 
those on the dorsal surface interrupted 
medially and again about half-way 
between the middle line and margin, 
those of venter apparently continuous, 
the inner 2 to 4 spines of each of the 
bands just anterior to the anal ring 
short triangular, distinctly differing 
in size and shape from the remainder 
of the body spines; anal ring much 
as in adult, except for reduction 
