140 
Journal of Agricultural Research 
Vol. XXX, No. 2 
long by about 1.3 millimeters wide; ovi¬ 
sac usually ranging from 1.5 to about 3 
millimeters long; body covered dor- 
sally with white secretion, except for a 
narrow band on each side, this curved 
toward the median line at the posterior 
end, running most of the length of the 
body, but terminated anteriorly by the 
first lateral marginal plate and pos¬ 
teriorly by the terminal dorsal plates, 
the wax arranged in the usual marginal 
and dorsal plates but those of the dor¬ 
sum not sharply differentiated, the 
anterior lateral plates short and stout, 
gradually increasing in length pos¬ 
teriorly and the posterior pair more or 
less distinctly longer than the remain¬ 
der; body of female, as mounted, about 
1.5 millimeters long by 1.3 millimeters 
wide, uniformly oval, or more or less dis¬ 
tinctly tapering anteriorly; derm mem¬ 
branous, except for a definitely devel¬ 
oped, very elongate oval, usually dis- 
terior median portion of ovisac band; X about 60 
tinctly chitinized, thickened plate run¬ 
ning back along the dorsal median line 
from the anterior apex of the head, and 
an elongate thickening ventrally on 
each side of the genital opening; an¬ 
tennae normally 8-segmented, the seg¬ 
ments short and stout as compared with 
practically all of the other species in 
the genus, measurements of those of 
one antenna in microns as follows; I, 
79; II, 71; III, 94; IV, 66; V, 61; 
VI, 55; VII, 57; VIII, 125; spine, 21; 
eyestalk rather flat conical, apex 
rounded; legs short, in agreement with 
the antennal length, fairly stout, en¬ 
tirely characteristic for the genus, tarsal 
claw with 2 or, more rarely, 3 fairly 
distinct denticles on the inner face; 
beak rather stout conical, with an in¬ 
distinct suggestion of a division near 
base; thoracic spiracles characteristic 
for the genus, opening in a spine cluster 
and with some spines close to the open¬ 
ing, but without an evidently developed 
spine collar; with 7 pairs of long tubu¬ 
lar abdominal spiracles; derm pores of 
the usual quadrilocular disk type, oc¬ 
curring both dorsally and ventrally, 
most abundant in the inner portion of 
the ovisac band; derm with slender 
setae occurring occasionally both dor- 
sally and ventrally; derm spines ar¬ 
ranged in the usual 11 marginal and 10 
dorsal clusters on each half of the body, 
the dorsal clusters distinctly forming 
transverse bands, but plainly and even 
rather widely separated from the corre¬ 
sponding marginal clusters, particu¬ 
larly on the abdomen, this clear area 
accounting for the narrow bare stripe 
visible between the dorsal and mar¬ 
ginal plates of secretion in the perfect 
specimens; ovisac band broad, inter¬ 
rupted posteriorly, composed of numer¬ 
ous spines and crowded with disk pores 
along the inner margin and through 
the inner fourth; band inclosing 4 loose 
and narrow transverse rows of spines, 
all of these, except the last, extending 
well toward the ovisac band on each 
side; anal ring characteristic for the 
genus; bands of pores on each side 
joined, or nearly so, at the ends, the 
inner margin of each distinctly but not 
prominently angled anteriorly and pos¬ 
teriorly; ring with the usual 6 setae. 
This species has been redescribed 
from the following material: From 
Ceres, Santa Fe Province, Argentina, 
probably on a composite, collected by 
L. Bruner in 1902 (type). It does not 
appear to have been observed since 
originally collected. 
ORTHEZIA URTICAE (LINNAEUS) 
Figs. 4, C; 6, M; 7, 0; and 34; PI. 2, H 
Reference. —Linnaeus, 1758, Sys- 
tema Naturse, ed. 10, p. 453 (as Aphis). 
Synonyms. — Orthezia characias Bose, 
Dorthezia dispar Kalt., Coccus dubius 
Fabr., Aphis urticata Stewart (see Fer- 
nald, 1903, Cat. Cocc. World, p. 36); 
Dorthezia delavauxii Thieb., “Coccus 
glecomae Fabr.” Dougl. (see Lindinger, 
1912, Die Schildlause, p. 367, and 
Fernald, 1903, Cat. Cocc. World, p. 
34); Orthezia maenariensis Dougl. (see 
Laing, 1922, Ent. Mo. Mag. 58; 254); 
Orthezia japonica Kuw., Orthezia mar- 
telli Leon. 
Adult female. —Total length of 
body with ovisac, in material examined, 
about 5 millimeters, but as much as 10 
millimeters according to published 
descriptions; total length of body with 
caudal plates about 3.5 millimeters; 
ovisac variable; width of body with 
secretion 2.5 millimeters; body com¬ 
pletely covered dorsally with well- 
developed plates of secretion, these 
