62 OHIO STATE ACADEMY OF SCIENCE. 



Asp id io 1 1 (s h e dei '« c ( Val 1 . ) 

 Figs. 10, 11. 



Chermes hederae Vail., Mem. Acad. Dijon, p. 30 (1829). 



Aspidiotus nerii Bouche , Schadl. Gart. Ins., p. 52 (ISSD). 



Scale of female: Diam. 1.5 — 2 mm., flat, dirty white, dull-orange 

 exuviae central or sub-central, exposed, usually showing segmentation 

 of fii'st 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-thii'd 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 3-4; 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, G-7, appearing as if surrounded and 

 connected by strips of chitin. 



Habitat : On a great variety of hosts ; citrus trees, palms, 

 cycads, Muhlenheckia, English Ivy; and on Hepafica hepatica 

 being used for experimental purposes in the greenhouse of the 

 Ohio State University. 



ASPIDIOTUS JUGLANS-REGIAE Comstock. 

 Fig. 7. 

 Aspidiotus jaglans-regiae Comst., Rep. U. S. Dep. Ag. 1880, p. 300 

 (1881). 



Scale of female: Circular, Hat, pale grayish-brown, 3 mm. 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, 

 I'ound at apex with mesal corners well defined, slightly converging, 

 notched near apex on outer margin. Second lobes narrower and dis- 



