46 OHIO STATE ACADEMY OF SCIENCE. 



promiscuously arranged. Five groups of circumgenital gland-orifices; 

 median, 4-6; anterior lateral, 5-9; posterior lateral, about 4. 



Remarks : This species was originally described on Euony- 

 mus latifolia, at Norfolk, W. Va. It was reported on Althea, sp. 

 at Cincinnati, Ohio. 



CHIONASPIS FURFURA (Fitch). 

 Fig. 30. 



Aspidiotus furfurus Fitch, 3rd. Rep. Ins. N. Y., p. 352 (1856). 



Chionaspis fui^furus Lint., 1st. Rep. Ins. N. Y., p. 331 (1882). 



Chionaspis furfurus (Fitch) Comst. Rep. U. S. Dep. Ag. 1880, p. 315 

 (1881). 



Cliionnspis furfura Cooley, Spec. Bull. Mass. Exp. Sta., p. 23 (1899). 



Scale of female: Length, 2 — 2.5 mm. Grayish or snow-white, very 

 broad posteriorly, flat, thin and delicate, often bent to left or right 

 from the small, j^ellowish-brown exuviae. Irregular when massed. 



Scale of male: Length, 0.7 — 1mm. Distinctly tri-carinate, rough- 

 ened above. Exuvia pale-yellow, covering about one-third of the scale. 



Female: Three pairs of striate lobes; median pair short, broad, 

 rounded, entire, with two oblique, chitinous bars at their bases; 

 second pair usually entire, somewhat truncate, inner lobule the larger, 

 oblique with inner edge thickened; third pair serrate, sometimes 

 prominent, but usually rudimentary. The gland-spines are arranged 

 as follows: 1, 1, 1, 1, 4-9; the first is small or wanting. Second row 

 of dorsal pores absent; third row with 2-4 in anterior and 3-5 in poster- 

 ior group. Five groups of circumgenital gland-orifices; median, 7-16; 

 anterior lateral, 22-32; posterior lateral, 16-22. 



Remarks : This is the most common species of the genus 

 Chionaspis in the Qnited States. It can be found upon Apple 

 and Pear trees in greater or less quantity in almost any locality 

 examined. It rarely becomes a serious pest in Ohio, because the 

 lady-bird beetle Chiloconis hivulnerus is predaceous upon it, and 

 usually precludes the necessity of resorting to remedial measures. 



; CHIONASPIS GLEDITSIAE Sanders. 



Figs. 36, 37. 



Ch. gledUsiae Banders, Ohio Naturalist, Vol. Ill, No. 6, p. 413 (1902). 



Scale of female: Length, 1.5 — 2 mm. Irregular in form, usually 

 very broad posteriorly, somewhat convex. Of rather firm texture, 

 dirty-white, usually blackened and inconspicuous on host. When re- 

 moved, a conspicuous white patch is left. 



Scale of male: Length, .6 — .8 mm. Sides parallel, strongly cari- 

 nated. Exuvia pale-yellow, occupying about one-fourth of the scale. 



