144 
Journal of Agricultural Research 
Vol. XXX, No. 2 
merited, all of the segments relatively 
short and stout; average lengths of 
the different segments in microns as 
follows: I, 196; II, 139; III, 89; IV, 
51; V, 68; VI, 71; VII, 71, VIII, 214; 
eyestalk strongly produced, curved, 
thumblike, not distinctly conical; legs 
characteristic for the genus; tarsal 
digitules short, stout, spinelike, tarsal 
claw without denticle; beak stout 
conical, 1-segmented, the joint figured 
by List ® in his elaborate monograph of 
the species not found in the specimens 
available for examination; thoracic 
spiracles not unusual, the openings 
placed rather close to the bases of the 
anterior and intermediate legs, not 
distinctly surrounded by a collar of 
spines; with 7 pairs of short tubular, 
abdominal spiracles; derm pores, so 
far as observed, of the quadrilocular 
disk type only, these scattered, rather 
rare on the dorsal surface, most notice¬ 
able in the interspaces between the 
the species in the genus, the lateral 
portions cut by clear transverse lines; 
band inclosing 3 definite, continuous, 
transverse bands of spines, of which 
the anterior is much the heaviest and 
continued for its full width nearly to 
the ovisac band at each end, while 
the 2 posterior taper laterally and 
terminate before attaining the ovisac 
band; anal ring stout oval, more or 
less distinctly pointed posteriorly, with 
numerous pores, conspicuously angulate 
internally on each half, and with the 
usual 6 anal ring setae, these of moderate 
length. 
This species has been redescribed 
from the following material: From 
Cooper Island of the Commander Is¬ 
lands, off Siberia, taken from the gullet 
of Leucosticte griseonucha a “rosy 
finch,” by Dr. L. Stejneger, June 28, 
1883, and from St. Anthony, New¬ 
foundland, on Iris setosa (Iridaceae), 
collected at quarantine, Washington, 
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Fig. 37 .—Orthezia cataphracta: Map showing actual known distribution. Large dots show records 
based on specimens actually examined; small dots show records based on published reports of occur¬ 
rence 
bands of spines, more abundant vent- 
rally in rather definite transverse 
bands, alternating with the spine 
bands, in the region inclosed by the 
ovisac band; none of these pores very 
heavily chitinized; body bearing incon¬ 
spicuous, slender setae, scattered, or 
in indefinite rows, and very numerous, 
rather stout spines in bands correspond¬ 
ing to the superficial secretion and 
about as figured, this including 10 
marginal clusters, counting the anterior 
one, and 10 dorsal clusters on each half 
of the body, the last, just anterior to 
the anal ring, quite small; and its 
secretion concealed from view by the 
posterior unpaired plate formed by 
the spine cluster just preceding it; 
the 3 small triangular plates of secre¬ 
tion on the middle line represented 
by 3 indistinctly isolated, small, tri¬ 
angular clusters of spines not wholly 
interrupting the transverse spine bands 
in which they occur; ovisac band 
composed of spines only, relatively 
narrow as compared with many of 
D. C., by H. L. Sanford, September 15, 
1916. The published European and 
other distribution records include 
“among the Alps,” Austria, Bohemia, 
England, Greenland, Ireland, Lapland, 
Norway, Scotland, Siberia, Styria, Swe¬ 
den, and Switzerland. The published 
host records include Calluna (Erica¬ 
ceae), Carex (Cyperaceae), Geranium 
(Geraniaceae), grass (not specified) 
(Gramineae), Hymogyne (Compositae), 
mosses (not specified) (Musci), Rhaco- 
mitrium (Musci), Saxifraga (Saxa- 
fragaceae), Soldanella (Primulaceae), 
Sphagnum (Musci). 
ORTHEZIA OCCIDENTALS DOUGLAS 
Figs. 4, F; 6, 0; and 38; PI. 2, K 
Reference. —Douglas, 1891, Ent. 
Mo. Mag. 27: 245. 
Synonym. —Orthezia californica Ehr- 
horn (see Ferris, 1920, Stanf. Univ. 
Pub. Univ. Ser. Biol. Sci. 1: 13. 
Adult female. —Body, with secre¬ 
tion, fairly large, total length to end of 
• List, J. H. Ztschr. Wiss. Zool. 45 : 201-286, pi. 1-6,1887. 
