50 OHIO STATE ACADEMY OF SCIENCE. 



Female: Median lobes broad, short, rounded, entire or serrulate. 

 Inner lobule of second and third pairs larger than outer, sometimes 

 serrulate. The gland-spines are arranged as follows: 1, 1-2, 1-2, 1-3, 

 4-G. In this species there are two kinds of dorsal pores. Accompanying 

 the anterior groups are smaller circular pores, also grouped. Oval 

 dorsal pores; third row with G-9 in anterior and 5-8 in posterior group; 

 fourth row with 6-10 in anterior and 7-10 in posterior group. Median 

 group of circumgenital gland-orifices, 21-3G; anterior lateral, 31-45; 

 posterior lateral, 28-32. 



Remarks: The Willows (Salix) are the usual hosts of this 

 species, although it is re])orted from Liriodendron iulipifera, 

 Popidus sp., Amelanchier canadensis, and two species of Cornus. 

 About 75 reddish-purple eggs are to be found under a scale dur- 

 ing the winter, which hatch about the first of June. 



CHIONASPIS SYLVATICA Sanders. 

 Figs. 64, 65. 

 Ch. sylvatica Sanders, Ohio Naturalist, IV, 4, p. 95 (1904). 

 Scale of female: Length, 1..5 — 2 mm., somewhat convex, very 

 irregular in shape, sometimes elongated and rounded posteriorly, and 

 sometimes decidedly broadened and truncate posteriorly, giving it a 

 deltoid shape; dirty-white to light-buff. First exuvia persistent, buff; 

 second exuvia brown. 



Scale of male: Length .G — 1 mm., white, strongly tri-carinate with 

 parallel sides. Exuvia very small, delicate, semi-transparent covering 

 about one-fifth of the scale. Commonly found on the leaves of its host. 



Female: Oval in outline, with third, fourth and fifth lobes anter- 

 ior from the pygidium prominent. Median lobes fused to near the tip, 

 diverging widely to rounded tips, then truncated obliquely toward the 

 second lobes; serrate or crenulate on lateral margins. Inner lobule 

 of second lobe serrate, produced on inner margin to a rounded tip; 

 outer lobule reduced, triangular, sharp-pointed, entire. Third lobe 

 slightly produced, serrate. On median line, a chitinous band extends 

 anteriorly to base of median lobes, expanding to a bulb-like thickening. 

 Chitinous bands extend obliquely toward this from outer margins. 

 Second lobes slightly thickened on inner margins. The gland-spines 

 are arranged as follows: 1, 1, 1, .1-2, 4-G, the first short and blunt. 

 Second row of dorsal pores represented by 1-2 in anterior group; third 

 row by 3-4 in anterior and 4-5 in posterior group; fourth row by 3-4 in 

 anterior and 5-7 in posterior group. Median group of circumgenital 

 gland-orifices, 7-10; anterior lateral, 15-20; posterior lateral, 14-18. 



Remarks : This scale has been found on Nyssa sylvatica, at 

 four widely separated locations in Southeastern Ohio; Sugar 



