Feb., 1903.] Three New Scale Insects from Ohio. 95 



(5) 150, (6) 140, (7) 135, (8) 180. Legs large and strong, rather spiny with 

 fenmr and ti1)ia of almost exactly eqnal length and with tarsus more than 

 half the length of the tibia ; large claw with three or four denticles and a 

 pair of short flattened digitules. The body is thickly covered with tubules 

 about 20|U. long, and small derm-oriiices. The anal ring is elliptical, bearing 

 six hairs and a narrow chitinous band on each side of the orifice, and is 

 thickly dotted. 



1 1)1 mat lire stage : Length, 3mm.; width, anini. Completely covered 

 above by four series of w^axy lamellae. The two median series consist of 

 eleven short thick lamellae ; the nth 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 5th and 6th pairs are 

 short, and the apparently fused 7th and 8th are again longer, giving the 

 insect a rectangular appearance. The 9th lamellae from either side are fused, 

 forming a single long lamella projecting posteriorly on the median line. 



On the ventral surface there 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, i,) 6. (i) 75, (2) 87, (3) 120, 

 (4) 8r, (5 ) 75, (6) 72, (7) 141. The distal half of the Sth joint is black. 



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

 lamellae on the dorsal surface. 



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

 Clmton, Ottawa cottnty, Ohio, July 5, 1903. The immature forms 

 have been collected at Port Clinton, Columbus and Georgesville. 



Concerning this species. Prof. Cockerell says : ''Orthezia soli- 

 dagi)iis is no doubt part of what has been called 'aiiicricaiia,' but 

 since Umnricaiia ' was never properl}' described, it is all right to 

 give a name to your insect. The species one first thinks of com- 

 paring it with are O. urticae (which might have been introduced 

 from Europe) and O. graminis (which gets as far East as Kansas). 

 O. solidagiiiis differs superficially from both ; from urticae by the 

 triangular outline of the mass of dorsal lamellae (in urticae it is 

 oval); from graiiiiiiis by the very long posterior lamellae, over- 

 lapping the ovisac." 



Chionaspis syIvVATica, n. sp. PI. VIII. Figs. 64, 65. 



Scale offeinalc: Length, 1.5— 2nnn., somewhat convex, very irregulm- in 

 shape, sometimes elongated and rounded posteriorly, and sometimes deci- 

 dedly broadened and truncated posteriori}-, giving it a deltoid shape ; dirty- 

 white to light-buff in color. First exuvia persistent, buff ; second exuvia, 

 brown. 



Scale of mate : Length, .6 — imm., white, strongly tri-carinate with par- 

 allel sides. Exuvia very small, delicate, semi-transparent, covering about 

 one-fifth of the scale. Commonly found on the leaves of the host, causing- 

 pale spots at the point of attachment. 



