COCCIDAE OF OHIO. 43 
Genus CHIONASPIS Signoret. 
This genus was founded in 1869 by Signoret, in the Annals 
of the Entomological Society of France. In 1897 the group was 
divided, and in Ohio is reported a single greenhouse representa- 
tive of the genus Hemichionaspis Ckll. 
I. Scale of male oval, without carinae, 
Seale of female 2—2.5 mm. in length; fifth group of 
gland-spines with more than four ortholobis 
Seale of female smaller, 1.5—2 mm. in length; fifth 
group of gland-spines numbering less than four longiloba 
II. Scale of male carinated more or less distinctly, narrow, 
A. Median lobes more or less fused, 
B. Median lobes fused to near tips, notched on outer margin 
americana 
BB. Median lobes fused half-way on inner margins, 
C. Lobes broad, entire, close together caryae 
Median lobes similar to caryae, but serrate on margin; 
outer lobule of second lobe, triangular, acute sylvatica 
Lobes narrower, pointed, second distant from median 
by half its width gleditsiae 
AA. Median lobes not fused by inner margins, perhaps 
approximate, 
PD. Fifth group of gland-spines from 1-5 pinifoliae 
DD. Fifth group of gland-spines from 3-11 
E. Median lobes broadly rounded, 
F. Lobules of second and third lobes decidedly rounded 
salicis-nigrae 
FF. Lobules of second and third lobes obliquely pointed furfura 
EE. Median lobes obscurely pointed, short, divergent corni 
EEE. Median lobes and lobules of second and third lobes 
pointed and striate euonymi 
CHIONASPIS AMERICANA Johnson. 
Fig. 31. 
Ch. americana Johns., Ent. News, vii, p. 150 (1896). 
Ch. americana Johns., Bull. Ill. St. Lab. N. H., iv, p. 390 (1896). 
Ch. americana Cooley, Spec. Bull. Mass. Exp. Sta., p. 41 (1899). 
Scale of female: Length 2—3mm. Plainly convex, broadest near 
the middle, of firm texture, white sometimes with yellowish tinge, but 
usually blackened by a sooty substance which renders it very incon- 
spicuous. The exuviae are about 0.7mm. long. A conspicuous white 
mark is left when removed from bark. 
Scale of male: Length 0.7—lmm. Sides parallel, tri-carinate. 
Exuvia pale-yellow. 
