' COCCIDAE OF OHIO. 53 



Aulacaspis pentagona (Targ.) 



'J'his species was introduced at Wooster on a donble flowering 

 cherry from Japan, but did not survive the winter of 1898-99. 

 ( Webster. ) 



AULACASPIS ROSAE (Bouche). 

 Figs. 44, 45. 



Asjyidiotus rosae Bouche, Naturg. Ins., p. 14 (1834). 



Diaspis rosae Comst., Rep. U. S. Dep. Ag., 1880 p. 312 (1881). 



Aulacaspis rosae CklL, Bull. Bot. Dept. Jam., p. 259 (1896). 



Scale of female: Circular or irregular, snowy-white, sometimes 

 with yellowish tinge, i-o mm. diam ; exuviae sublateral ; first larval 

 skin naked showing the segmentation; second covered. 



Scale of male: 1.25 — 1.5 mm. in length; white and tri-carinated. 



Female: Body elongated; the ante-penultimate segment promi- 

 nently lobed and bearing 8-10 gland-spines. Median lobes large, approxi- 

 mate at base, serrulate, diverging, attached to body for entire length. 

 Inner lobules of second, third and fourth lobes, rounded larger than the 

 outer lobule. Fourth lobe nearly obsolete. There is a gland-spine laterad 

 oi each of the four lobes and 2-4 near penultimate segment, enlarging 

 as they are further removed from the meson. On the dorsal surface 

 the spines are situated as follows; a very small one on the median 

 lobe, and one slightly larger on the outer lobule of the second, third 

 and fourth lobes respectively, and one about three-fourths of distance 

 to penultimate segment. The spines on the ventral surface are slightly 

 mesad of the corresponding dorsal ones. Dorsal pores in three rows; 

 second row represented by anterior group of 2-3; third row, anterior 

 group, 4-5, posterior group, 5-G; fourth row, anterior, 4-6, posterior 

 group, G-8. Mesad of second and third lobes respectively, is an elon- 

 gated pore appearing like a lobe. Anterior group of circumgenital 

 gland-orifices distinct, rounded, 18-22; anterior lateral, 25-32; posterior 

 lateral, 26-34. Lateral groups indistinctly separated, sometimes almost 

 continuous. 



Remarlvs : Generally distributed over Ohio on rose-bushes, 

 raspberries and blackbe^'ries. 



Genus HEMICIITONASPIS Ckll. 



In the niembers of this genus the median lobes are fused, 

 and together form a dark-colored semi-circle. But one species 

 has been reported, II. aspidistrne Sign, in which the scale of the 

 female is brown and the median lobes are small and sunken in 

 the pygidium. 



