134 
Journal of Agricultural Research 
Vol. XXX, No. 2 
Boulder, Colo., in nests of Lasius sp. 
under rocks, coll. W. P. and T. D. A. 
Cockerell, November, 1904 (type), 
and Colo, with ants, coll. C. F. Baker, 
about 1897 (from Tinsley collection). 
The species was also recorded in the 
original description as occurring at 
Trout Spring, N. Mex. 
ORTHEZIA PRAELONGA DOUGLAS 
Figs. 3, S, T; 6, G; 7, M; 27 and 28; PI. 2, B 
Reference. —Douglas, 1891, Ent. 
Mo. Mag. 27: 246-247. 
Adult female. —Length of adult fe¬ 
male with secretion nearly 2 millime¬ 
ters, width 1.25 millimeters, ovisac 
variable in length, sometimes as much 
as 6 millimeters long, more or less dis- 
Fig. 27 ,—Orthezia praelonga: Adult female, body, 
dorsal and ventral; X about 31 
tinctly ribbed dorsally, body completely 
covered with very fragile white secre¬ 
tion dorsally, showing a more or less 
distinct, but at most narrow, bare 
streak near each margin, separating the 
dorsal and marginal plates, secretion 
evidently arranged in the usual lateral 
and dorsal tufts, but invariably so con¬ 
fused medially, in museum specimens, 
as to make its accurate description 
practically impossible; the 2 anterior 
marginal plates elongate conical, pro¬ 
truding directly forward, the next lat¬ 
eral marginal plates also elongate, pro¬ 
truding directly laterad, the remaining 
marginal plates more and more strongly 
curved backward, with the plates of 
the apical pairs quite long, projecting 
over the ovisac; the 2 anterior pairs of 
dorsal plates directed forward, the 
next nearly erect, and the remainder 
directed somewhat backward and over¬ 
lapping; ventral surface completely 
covered with secretion except at the 
insertions of the appendages; body of 
female, as mounted, about 1.5 milli¬ 
meters long by 1 to 1.25 millimeters 
wide, rarely somewhat larger than this; 
uniformly oval, or somewhat narrowed 
anteriorly; derm membranous, except 
for a narrow, dorsal, chitinized, median 
stripe running backward from a point 
at or close to the anterior margin, vary¬ 
ing somewhat in length and width, and 
frequently, but not always, expanded 
at or near the posterior apex; antennae 
normally 8-segmented, but often ab¬ 
normal, as few as 5 segments having 
been observed, lengths of segments of 
one in microns as follows: I, 118; II, 
93; III, 157; IV, 124; V, 118; VI, 
107; VII, 114; VIII, 221; spine, 22; 
eyestalk rounded tuberculate, some¬ 
what conical, small; legs quite long in 
proportion to the size of the body, in 
this respect resembling insignis, mod¬ 
erately slender, bearing slender setae, 
tarsal claw with 2 distinct, but not 
prominent, denticles on the inner face, 
more rarely with a slight swelling sug¬ 
gesting the presence of a third basad to 
the other 2; beak conical, apex rounded, 
1 -segmented, with a very faint sugges¬ 
tion of a division line near base occa- ' 
sionally showing; thoracic spiracles 
entirely characterictic for the genus, 
opening in a spine cluster and with 
some spines grouped about the opening 
in the form of an indistinct spine collar; 
with 7 pairs of long tubular abdominal 
spiracles; derm pores of the usual quad- 
rilocular disk type, occurring both dor¬ 
sally and ventrally, varying somewhat 
in size and chitinization, most abundant 
along the margin of the ovisac band, but 
also fairly numerous in the posterior 
ventral abdominal area; derm with 
scattered slender setae both dorsally 
and ventrally, in addition with some 
small spinelike setae just anterior to 
the genital opening, and with a consid¬ 
erable number of small circular clear 
disks with chitinized rims in a loose 
cluster posterior to the same, and to a 
less extent anteriorly among the clus¬ 
ters of small setae; derm spines ar¬ 
ranged in the usual 11 marginal and 
10 dorsal clusters about as shown in 
figure, the dorsal abdominal bands 
rather narrow, with wide interspaces, 
and, while continuous to the marginal 
bands on each side, somewhat more 
widely separated from the last than in 
many other species, the spines compos¬ 
ing them more loosely and less defin¬ 
itely grouped than in many of the other 
species; ovisac band broad, made up 
of spines, with the addition of a large 
number of disk pores, in a row 4 to 6 
deep clear around the inner margin of 
the band and partly confused with the 
