62 OHIO STATE ACADEMY OF SCIENCE. 
Aspidiotus hederac (Vall.) 
Figs. 10, 11. 
Chermes hederae Vall., Mem. Acad. Dijon, p. 30 (1829). 
Aspidiotus nerii Bouche , Schadl. Gart. Ins., p. 52 (1833). 
Scale of female: Diam. 1.5—2mm., flat, dirty white. dull-orange 
exuviae central or sub-central, exposed, usually showing segmentation 
of first skin. . 
Scale of male: Slightly elongated, white with light-yellow, sub- 
central exuvia. Length about 1 mm. 
Female: Three pairs of lobes; median and second well-developed; 
the third small and pointed. The median are deeply notched on each 
margin near the apex, the mesal notch being slightly posterior, appear- 
ing to converge. The thick chitinous median lobes extend into the 
segment. Second lobes are often notched on lateral margin near the 
apex. The plates are nearly all deeply fringed; two between median, 
two between median and second, three between second and third, and 
about six fringed and two or three forked or simple ones laterad of 
third lobe. On the ventral surface, there is a spine at the lateral base 
of each lobe, one at one-third and one at one-half of distance to penul- 
timate segment. On the dorsal surface, there is a spine mesad of the 
corresponding ventral spine. The dorsal pores are in four irregular 
rows; first of 5-4; second of about 7; third of about 6; fourth, near 
margin, of about 4. Four groups of circumgenital gland-orifices; anter- 
ior lateral, 8-9; posterior lateral, 6-7, appearing as if surrounded and 
connected by strips of chitin. 
Habitat: On a great variety of hosts; citrus trees, palms, 
eyeads, Muhlenbechia, English Ivy; and on Hepatica hepatica 
being used for experimental purposes in the greenhouse of the 
Ohio State University. 
ASPIDIOTUS JUGLANS-REGIAE Comstock. 
Fig. 7. 
Aspidiotus juglans-regiae Comst., Rep. U. S. Dep. Ag. 1880, p. 300 
(1881). 
Scaie of female: Circular, flat, pale grayish-brown, 3mm. diam. 
Reddish-brown, sub-central exuviae covered with secretion. Ventral 
scale a white, delicate film. 
Scale of male: Similar in color to scale of female, but smaller, 
elongated, with anterior end and exuvia more convex. Length, 
1—1.25 mm. 
Female: Median lobes well-developed, produced, broad and close, 
round at apex with mesal corners well defined, slightly converging, 
notched near apex on outer margin. Second lobes narrower and dis- 
