COCCIDAB OF OHIO. :'>3 



Immature stage: Length 3 mm.; width, 2 mm. Completely cov- 

 ered above by four series of waxy lamellae. The two median series 

 consist of eleven short thick lamellae; the 11th pair being very small 

 and the anterior pair protruding forward over the head in a bilobed 

 manner. The first four lateral lamellae are similar to those of the 

 adult, the fifth and sixth pairs are short, the apparently fused seventh 

 and eighth are again longer, giving the insect a rectangular appear- 

 ance. The ninth lamellae from either side are fused, forming a single 

 long lamella projecting posteriorly on the median line. 



On the ventral surface are 12 short, broad, subequal lamellae on 

 each side around the margin of the body, and the entire surface has 

 an armadillo appearance on account of the short plate-like lamellae. 

 This stage has 7-jointed antennae. Formula: — 7, 3, 2, 4, (5, 1) 6. (1) 

 75, (2) 87, (3) 120, (4) 81, (5) 75, (G) 72, (7) 141. The distal half of 

 the eighth joint is black. 



Larval stage: With 6-jointed antennae and two series of large, 

 cottony lamellae on the dorsal surface. 



Remarks : The author has found only five adults, near Port 

 Clinton, Ottawa Co., 0., July 5, 1903. The immature forms have 

 been collected at Port Clinton, Columbus and Georgesville. 



Subfamily DACTYLOPIINAE. 

 This subfamily is represented in Ohio by six genera of more 

 or less economic importance, viz., Asterolecanium, Kermes, Gossy- 

 paria, Eriococcus, Phenacoccus and Pseudococcus. The only 

 species which have as yet any economic importance in Ohio, are 

 the "Mealy-bugs," Pseudococcus citri and P. longispinus. 



ASTEROLECANIUM VARIOLOSUM (Ratz.) 

 Found on Quercus aurea, at Mentor, Lake Co., 0., by Prof. 

 Wilmon Newell, Feb. 7, 1900. This scale is of very little impor- 

 tance, as far as known in Ohio. 



Genus KERMES Boitard. 

 Globular or reniform Coccids appearing like galls and al- 

 ways found on Oaks; rather large, varying from 3— 10mm. in 

 diameter; segmentation obscure or revealed by dark bands, or 

 by rows of dark spots on both. Anal ring without hairs in adult. 

 Larvae are long-elliptical with a plainly segmented abdomen, 

 Avhich is usually deeply cleft at the posterior extremity, forming 

 two anal lobes which bear each a long hair and one or more 

 shorter ones. Anal ring with six hairs and bodv fringed with 



