Jan. 15, 1925 
Scale Insects of the Subfamily Ortheziinae 
137 
out the area inclosed by this band; 
derm with an occasional seta both dor- 
sallv and ventrally; body spines ar¬ 
ranged in the usual 11 marginal and 10 
dorsal clusters, about as shown in 
figure, the dorsal clusters extending 
close to the marginal, with the outer end 
of dorsal cluster and the inner end of 
the marginal cluster sinuous so that the 
two overlap each other more or less ob¬ 
viously; ovisac band broad, interrupted 
posteriorly by 3 transverse clear bands 
on each side, made up of numerous 
crowded spines, and, through the 
inner third particularly, numerous and 
rather crowded disk pores, anterior 
margin with a more or less definite sin¬ 
gle row of these pores; ovisac band in¬ 
closing 5 transverse rows of 
spines, these distinctly and 
rather widely separated from 
one another, but, excepting the 
last, extending to the ovisac 
band at each end and more or 
less distinctly broadened at 
the ends; anal ring elongate 
oval, the pores on each nearly 
contiguous at the ends, although 
not united, the inner margins 
acutely angulate anteriorly and 
posteriorly; with the usual 6 
fairly long setae, and with a 
few tiny clear disks on each 
side of the anal ring and more 
of these ventrally behind the 
anal ring, these apparently 
similar to those already 
described for praelonga and 
olivacea. 
The preceding redescription 
of this species has been based 
on the type specimens from 
Columbus and Sandusky, 
Ohio, on Solidago canadensis 
(Compositae), coll. J. G. 
Sanders, Oct., 1902, and July, 
1903, and on specimens from 
St. Louis, Mo., on Solidago, coll. 
Otto Lugger, July, 1872 (No. 234 
L). Material from Plummers Island, 
Md., on Solidago, coll. J. G. Sanders, 
Oct., 1908, and from Round Hill, 
Va., on Potentilla (Rosaceae), coll. 
J. G. Sanders, Sept., 1909, has also 
been available. The published records 
add Kansas to the distribution and 
Ambrosia trifida (Compositae) to 
the known hosts. 5 The synonymy 
indicated for ambrosiae Lawson has 
been based on an examination 
of specimens received from Prof. 
Lawson by the Bureau of Ento¬ 
mology. 
ORTHEZIA SONORENSIS COCKERELL 
Figs. 3, W; 6,1; and 31; PI. 2, E 
Reference. —Cockerell, 1896, U. S. 
Dept. Agr. Div. Ent.Tech. Ser. 4:38-39. 
Adult female. —Very closely re¬ 
sembling Orthezia annae; antennae 
normally 8-segmented, measurements 
of one in microns as follows: I, 107; 
II, 126; III, 150; IV, 100; V, 103; 
VI, 89; VII, 85; VIII, 160; disk pores 
along inner margin of ovisac band 
somewhat less numerous than in 
annae, fewer of the inner spines of the 
posterior dorsal clusters reduced in 
size than in annae. 
Larva. —In general resembling that 
of annae quite closely, but differing 
conspicuously in that the antennae 
of all the specimens examined are 
only 5-segmented, with the third 
segment very long, as compared with 
the normal 6 segments present in the 
larva of annae, this difference appar¬ 
ently furnishing the only positive means 
of differentiating these two species. 
This species has been included in 
this paper on the basis of material 
from San Ignacio, Sonora, Mexico, on 
Hymenoclea monogyra (Compositae), 
coll. C. H. T. Townsend, Sept. 26, 1894 
(type). It does not appear to have 
been observed since the publication of 
the original description. 
Fig. 31 —Orthezia sonorensis: Adult female, body, dorsal and 
ventral; X about 31 
5 See also Orthezia americana, as most of the records for that species probably actually apply to 
O. solid a oinis 
13950—25t-4 
