116 
Journal of Agricultural Research 
Vo!. XXX, No. 2 
ous; antennae normally 8-segmented, 
rather short and stout, lengths of the 
segments of one in microns as follows: 
I, 107; II, 100; III, 85; IY, 61; Y, 61; 
VI, 57; VII, 60; VIII, 168; spine, 25; 
eyestalk heavily chitinized, asymmetri¬ 
cally flat conical, apex rounded; legs 
characteristic for the genus, inner face of 
tarsal claw usually with 2 tiny denticles; 
beak rather long triangular, 1-seg- 
mented, with a faint suggestion of a joint 
near the base; thoracic spiracles charac¬ 
teristic for the genus, each opening 
into a pore cluster, each opening sur¬ 
rounded by a fairly distinct collar of 
spines; with 8 pairs of tubular ab¬ 
dominal spiracles; derm pores of the 
usual quadrilocular disk type, occurring 
both dorsally and ventrally, those of 
the dorsum usually more heavily 
chitinized than the ventral pores; with 
Fig. 10 .—Orthezia balloui: Adult female, body, 
dorsal and ventral; X about 31 
occasional setae both dorsally and 
ventrally, these most abundant in a 
transverse cluster anterior to the 
genital opening ventrally; derm spines 
arranged in the usual 11 marginal and 
10 dorsal clusters, the dorsal bands 
transverse, broad, extending close to 
the corresponding marginal clusters; 
ventral ovisac band wide, made up of 
numerous spines, these more crowded 
toward the inner margin, and along 
the latter a single, irregular row, 
sometines more or less interrupted, of 
disk pores; band inclosing 5 transverse 
rows of spines, these terminating later¬ 
ally before attaining the ovisac band, 
and with the anterior several spines 
wide; anal ring short oval, with the 
pore bands on each half very broad 
and the inner and outer halves com¬ 
pletely joined to form a single band, 
except, at most, for a very short dis¬ 
tance posterior to the insertion of 
the middle seta, each band joined to 
the other at the ends and angulate 
within anteriorly and posteriorly as in 
Urticae. 
Larva. —Not displaying any obvious 
peculiarities; antennse 6-segment ed; 
anal ring much as in adult except for 
reduction; spines arranged in trans¬ 
verse segmental rows; dorsal spines 
crowded into marginal and submedian 
clusters on each half of the body. 
This species has been described from 
five mounted and a few unmounted 
adult females and three mounted lar¬ 
vae, all collected at Guaqui, Bolivia, 
among roots of “Vareta,” by W. R. 
Allen, March 7, 1919. The specimens 
were received for study from Prof. J. 
G. Needham of Cornell University, 
Ithaca, N. Y. 
The types are in the U. S. National 
Collection of Coccidae. 
ORTHEZIA CAUDATA FERRIS 
Figs. 3, F; 5, E; and 12 
Reference. —Ferris, 1921, Stanf. 
Univ. Pubs., Biol. Sci. 1: 71, fig. 1. 
Adult female. —No specimens 
available for description of external ap- 
perance (see reference cited for this); 
length, as mounted, 3 millimeters, 
width about 2.75 millimeters, broad 
oval, tapering somewhat anteriorly; 
derm membranous except for appen¬ 
dages and faint linear longitudinal 
median stripe running back from the 
anterior margin on the dorsal surface 
for a little more than the width of the 
anterior marginal spine cluster; anten¬ 
nae normally 8-segmented, lengths in 
microns for one as follows: I, 178; II, 
143; III, 186; IV, 146; V, 161; VI, 161; 
VII, 143; VIII, 232; inner face of first 
segment strongly bulging; eyestalk 
elongate conical, heavily chitinized; 
legs characteristic for the genus, 
elongate, rather slender; tarsal claw 
with 3 to 4 slight denticles on its in¬ 
ner face; beak elongate conical, 1- 
segmented, with a suggestion of a joint 
about one-third of its length from base; 
thoracic spiracles not unusual, external 
opening surrounded by a very loose 
circle of quadrilocular disk pores but 
without a distinct collar of spines; with 
8 pairs of long tubular abdominal 
spiracles; derm pores of the usual 
quadrilocular disk type only, these 
fairly well chitinized, apparently vary- 
