Jan. 15, 1925 
113 
Scale Insects of the Subfamily Ortheziinae 
chitinized plates, these replacing the 
outer halves of the dorsal spine bands 
on 4 of the anterior abdominal seg¬ 
ments, differing, in the possession of 
these chitinous plates, from all the 
previously described species of Orthezia 
and resembling in this respect only 
the species tillandsiae, but differing 
lengths of the segments of one in 
microns as follows: I, 82; II, 75; III, 
107; IV, 75; V, 82; VI, 79; VII, 68; 
VIII, 154; eyestalk small, tuberculate 
rounded; beak conical, 1-segmented; 
legs characteristic for the genus, rather 
slender, tarsal claw with 2 compara¬ 
tively prominent denticles on the inner 
*'io. 7—Orthezia spp., right half of anal ring of certain species, all X 217, except B and I, which 
are X 510: A, annae; B, balloui; C, boliviana; D, cheilanthi; E, galapagoensis; F, garryae; G, grandis; 
H, lasiorum; I, minor; J, nigrocinda; K, nuda; L, olivacea; M, praelonga; N, tillandsiae; 0, urticae; P, 
cataphrada 
obviously from the latter in that the 
plates are much more conspicuous, 
much better developed, and interrupt 
the dorsal spine bands instead of 
merely occupying a position between 
the outer sections of such bands; 
antennae normally 8-segmented, the 
face; thoracic spiracles characteristic 
for the genus, each opening in a 
spine cluster but without definite spine 
collar around the opening; with, so far 
as can be determined, 4 pairs of long 
tubular abdominal spiracles; derm 
pores of the usual quadrilocular disk 
