70 OHIO STATE ACADEMY OF SCIENCE. 



our winters. They have large, usually dark scales with covered 

 exuviae. The last segment of the female presents no incisions, 

 but instead, rather long, chitinous thickenings and strongly 

 branched plates. 



A. Scale of female with jet-black exuviae obscurus 

 AA. Scale of female delicate, semi-transparent, with orange 



exuviae; circumgenital gland-orifices absent aurantii 



B. Circumgenital gland-orifices present in four groups dictyospermi 

 AAA. Scale of fentiale dark reddish-brown, convex; second 



and third series of dorsal pores in double rows aonidum 



Chrysoynpliulus aoiiidicm (Linn.) 

 Fig. 13. 



Coccus aonidum Linn., Syst. Nat., Ed. x, i. p. 455 (1758). 

 Chrysomphalus flcus Ashmead, Am. Ent., iii, p. 267 (1880). 

 Aspidiotus ficus Comst, Rep. U. S. Dep. Ag., 1880, p. 29G (1881). 

 Chrifsomphalus aonidum Ckll., Biol. Centr. Amer., ii, pt. 2, p. 25 

 (1899). 



Scale of female: Circular, 2 mm. diam., convex; nipple-like exuviae 

 gray, surrounded by a ring of light reddish-brown; remainder of scale 

 dark-brown to almost black. 



Scale of male: Similar to scale of female in color, excepting long 

 posterior gray flap. Diam. O.G — 0.8 mm. 



Female: Three pairs of well-developed lobes; the median and 

 second pairs are abruptly narrowed midway on their lateral margin; 

 the third pair have two or three notches on the lateral margin. Six 

 chitinous, linear to spatulate processes extend anteriorly from either 

 margin of the three pairs of lobes. Chitinous processes on lateral 

 margin of median and second lobes and on mesal margin of third lobe, 

 longest. Margin of entire segment thickened with chitin, ending 

 posteriorly in a broad, serrate lobe laterad of third lobe. Plates 

 deeply fringed, conspicuous, slightly longer than lobes. Between 

 median, and between median and second lobes, two; between second 

 and third, three, and outside of third lobe are three compound fringed 

 plates. The short spines on the ventral surface are situated on the 

 lateral margins of each lobe including the apparent fourth lobe. On 

 the dorsal surface, the spines are situated mesad of the corresponding 

 ventral spine, except that they are wanting upon the median lobes. 

 Dorsal pores numerous in three series; first (between median and 

 second lobes) of 3; second in double row of about 20; third of about 23. 

 Four groups of circumgenital gland-orifices; anterior lateral, 7 — 9; 

 posterior lateral. 4 — 5. 



