126 
Journal of Agricultural Research 
Vol. XXX, No. 2 
This species has been redescribed 
from the following material: A single 
mutilated specimen, mounted on a 
slide, from Las Vegas, N. Mex., in nests 
of Lasius americanus, collected by Mrs. 
T. D. A. Cockerell, April, 1901 
(type). 
ORTHEZIA LONGIPES HEMPEL 
Figs. 3, L; 5, L; 7, H; and 20; PI. 1, I 
Reference. —Hempel, 1920 (rec’d 
1921), Rev. Mus. Paulista 12: 343, 
345, 367-368. 
Adult female. —Very closely re¬ 
lated to 0. praelonga Dougl., differing 
clearly from that species, as usually 
ORTHEZIA MEXICANA, NEW SPECIES 
Figs. 3, M; 6, A; and 21; PI. 1, J 
Adult female. —Stout oval, length 
of body with secretion about 1.8 milli¬ 
meters, width about 1.1 millimeters, 
length of ovisac about 2.2 millimeters, 
completely covered dorsally with well- 
developed tufts of white secretionary 
matter, these arranged in the usual 
marginal and dorsal plates, the posterior 
marginal tufts increasing in length and 
projecting backwards over the ovisac; 
ovisac distinctly ribbed dorsally; length 
of body as mounted about 2.1 milli¬ 
meters, width 1.7 millimeters, stout oval, 
tapering slightly anteriorly, posterior 
apex broadly rounded; derm 
membranous; antennae 
normally 8-segmented, the 
measurements of the seg¬ 
ments of one in microns as 
follows: I, 132; II, 114; III, 
94; IV, 93; V, 82; VI, 75; 
VII, 61; VIII, 158; spine, 
36; eyestalk short, rounded 
conical, small; legs character¬ 
istic for the genus, rather 
short and stout, tarsal claw, 
at most, with a very in¬ 
distinct denticle; setae on 
legs small, slender, spinelike, 
tarsal digitules relatively 
slender; beak elongate coni¬ 
cal, 1-segmented, but with 
a quite distinct suggestion 
of a joint about one-third 
of length from base; thoracic 
spiracles characteristic . for 
the genus, each opening into 
a spine cluster, and with 
spines grouped about this 
opening to form a very in¬ 
definite collar; with 7 pairs 
of large, short tubular ab¬ 
dominal spiracles; derm 
pores of the usual quadril- 
ocular disk type, occurring 
rather commonly both dor¬ 
sally and ventrally and very numerous 
in the ventral abdominal area inclosed 
by the ovisac band; derm with occasional 
setae both dorsally and ventrally, these 
most abundant in a well developed 
cluster anterior to the genital opening; 
body spines arranged in the usual 11 
marginal and 10 dorsal clusters, about 
as shown in figure, the dorsal abdominal 
bands narrowed through much of their 
length, but broadened exteriorly, and 
all extending close to the marginal 
bands on each side; body spines, in 
general, rather elongate, slender, stout 
at base, tapering strongly near base, 
then gradually, to an almost pointed 
tip, but with the spines in the last pair 
of dorsal abdominal bands distinctly 
Fig. 20 .—Orthezia longipes: Adult female, body, dorsal and 
ventral; X about 31 
recognized, only in the possession of a 
more elongate, asymmetrical conical 
eyestalk and of scattered spines just 
within the ovisac band anteriorly and 
posteriorly in addition to the normal 
4 transverse rows or bands of spines. 
The great kindness of the describer of 
the species, Mr. Hempel, in inducing 
the authorities of the Museo Paulista, to 
send cotype specimens for examination 
has made it possible to compare this 
species with other members of the genus 
and to associate it in the relationship 
indicated. 
The species is known only from the 
original collection at Rio de Janeiro, 
Brazil, on an undetermined native 
plant. 
