376 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



brown, exuviae subcentral, bright yellow. Scale of lighter color 

 than dry bark of host. 



Female : Median lobes large and prominent, rather close, nearly 

 parallel, prominently notched on both outer and inner margins, 

 apex rounded ; inner notch slightly nearer apex than outer notch. 

 Median group of circumgenital gland-orifices, 0-4 ; anterior lateral, 

 4-9 ; posterior lateral, 3-7. 



Scale of male: Length 1 mm., elongated, slightly more convex 

 and darker than female. Exuviae submarginal. 



On grape ; not yet recorded from Connecticut. 



Chrysomphalus Ashmead. 



The species of this genus were formerly included under Aspidio- 

 tus but differ in the shape of the female and in the presence of 

 much elongated, chitinous thickenings or processes extending for- 

 ward from the bases of the lobes. Of the four species here listed, 

 three are tropical and occur in greenhouses or on tropical fruits 

 in the markets. 



Key to Species. 



1. Circumgenital gland-orifices present; three pairs of well-developed 



lobes 2 



Circumgenital gland-orifices absent; three pairs of well-developed 

 lobes aurantii 



2. Four groups of gland-orifices ; scale of female dark reddish brown 3 

 Five groups of gland-orifices ; scale of female colored like bark 



of host, exuviae j et black obscurus 



3. Scale of female very convex, almost conical; exuviae gray; 



chitinous processes linear, nearly straight aonidum 



Scale of female broadly convex, reddish brown, exuviae gray; 

 chitinous processes clavate, more or less curved dictyospermi 



C. aonidum (Linnaeus). Chrysomphalus ficus. Aspidiotus 

 ficus. Coccus aonidum. Fig scale. Circular scale. (PI. 

 xv, 6.) 



Syst Nat, Edn. 10, i, 455, 1758. 



Scale of female: Diameter 2mm., circular, strongly convex, 

 reddish to dark brown; exuviae gray, nipple-like, highly raised 

 from surface of leaf ; appearing almost as if pointed like a low or 

 flattened cone. 



Female: Median and second lobes abruptly narrowed distally, 

 notched on outer margins ; third pair of lobes with two or three 

 notches on outer margins ; paraphyses or chitinous processes 

 nearly straight, the central pair small, nearly parallel, all other 

 pairs converging toward their distal extremities. Four groups 

 of circumgenital gland-orifices arranged as follows : anterior 

 lateral, 7-8; posterior lateral, 3-4. 



Scale of male : Similar to that of female, though much smaller 

 and with posterior gray flap. 



