Jan. 15, 1925 
Scale Insects of the Subfamily Ortheziinae 
145 
caudal appendages 4.5 millimeters, 
total width 3.25 millimeters; body 
completely covered with dense, sharply 
defined wax plates, these occurring in 
the usual marginal and dorsal tufts, 
white or variously discolored, some¬ 
times appearing yellow-brown or gray, 
but with only 10 marginal tufts, instead 
of the 11 found in typical Orthezia, 
these all more or less definitely flat¬ 
tened, the lateral and posterior ones 
curved and directed backward and 
from one another, the first 3 by large[flat- 
tened, triangular, overlapping plates set 
on the median line, the remainder by a 
triangular depression, the last visible 
pair of dorsal tufts fused into a single 
plate; body, as mounted, stout oval, 
length about 3.5 millimeters, width 
about 3 millimeters, derm membranous; 
antennae normally 8-segmented, lengths 
of one in microns as follows: I, about 
250; II, 215; III, 121; IV, 100; V, 89; 
VI, 93; VII, 111; VIII, 235; spine, 21; 
Fig. 38 —Orthezia occidentals: Adult female, body, dorsal and ventral; X about 31 
downward, gradually increasing in 
length posteriorly so that the apical 3 
or 4 overlap the ovisac to a marked 
degree; ovisac short and stout, not 
much, if any, longer than the body, 
distinctly ribbed dorsally; anterior pair 
of dorsal plates fused into a single 
transverse lobe, the members of each of 
the following 7 pairs distinctly separated 
eyestalk strongly tuberculate, finger¬ 
like, curved, length through longitudi¬ 
nal axis about 162 microns; width 
about 72 microns; each placed imme¬ 
diately adjacent to a basal antennal 
segment; legs stout, the setae on the 
different parts heavy and spinelike, 
tarsal claw without any distinct den¬ 
ticles on the inner face, although fre- 
