COCCIDAE OF OHIO. 61 
most dangerous scale insect then established in Illinois. As far 
as we have observed it has not become a pest in Ohio, although 
found in various localities and on several hosts. It can be dis- 
tinguished from the San Jose Seale by the much lighter color 
of the seale and the orange-red exuviae; also the ‘‘dot and ring’’ 
is not noticeable. 
ASPIDIOTUS GLANDULIFERUS Ckll. 
Fig. 8. 
Aspidiotus glanduliferus Ckil., Ohio Naturalist, ii, p. 287 (1902). 
Scale of female: 2mm. diam., slightly convex, blackish, with 
large sub-central to sub-lateral orange-ferruginous or almost vermillion 
exuviae, readily exposed by rubbing; removed from the bark, a con- 
spicuous white patch -is left. 
Scale of male: Oval, broad, with covered exuvia and a white dot 
and ring. 
Female: Broad oval with deep constriction between head and 
thorax. Color, bright orange; caudal margin stained with dark red 
brown. Median lobes very large, broad, scarcely produced; second 
lobes similar but smaller and more or less serrate, close; third lobes 
represented by small angular prominence. Chitinous thickenings of 
interlobular incisions, short and straight, subequal, but the inner the 
larger. Plates, spine-like; two between median lobes, two caudad of 
first incision and two or three slightly branched caudad of second 
incision. Spines quite large; on the dorsal surface, a spine is borne by 
the first, second and third lobes respectively; the fourth spine at about 
one-fourth, and the fifth at one-half the distance to the penultimate 
segment. On the ventral surface, the spines are mesad of the corres- 
ponding dorsal ones, except that they are lacking on the median lobes. 
Five groups of circumgenital gland-orifices; median, 4-5; anterior 
lateral, 15-18; posterior lateral, 7-10. Dorsal pores very numerous in 
four series; the first (below first interlobular incision) of 3 in a row; 
the second of about 17, and after a short break, 9-10 more; the third 
of over 30; the fourth of about 11. Anal orifice very small, level with 
second dorsal pore of first row. 
Remarks: This scale was discovered in February, 1902, on 
the branches of Pinus sylvestris on the Ohio State University 
Campus, by the author,and sent to Prof. Cockerell, who described 
it as A. glanduliferus, because of the large number of beautifully 
arranged dorsal pores in the last segment of the female. Since 
that time the author has found this seale on Pinus virginiana and 
Tsuga canadensis on the O. S. U. Campus. 
