34 8 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull 



Key to Species. 



Adult female with dorsal bare streaks insignis 



Adult female wholly covered with wax secretion americana 



O. americana (Walker). 



Cat. Homop. Brit. Mus., iv, 1091, 1852. 



This species resembles the following but the female has the 

 second and eighth antennal segments longest, with the third, fourth 

 and fifth next, and about equal, with the sixth and seventh smaller 

 and subequal; the first is as thick as long. Tarsi nearly half as 

 long as tibiae ; claw medium with a small hair at base on each 

 side. Body elongate, oval, strongly rounded behind, constricted 

 in front, emarginate at base of antennae, rounded at apex, anal 

 ring with six hairs. 



The male has nine segments in the filiform antennae, the third 

 the longest, each segment with a swelling at the distal end. 



This species occurs in New York and in Canada, but has not 

 yet been recorded from Connecticut. 

 O. insignis Douglas. Greenhouse Orthezia. (PI. xiii, 1.) 



Jour. Quekettmicr. Club, 169, 1887. 



Adult female: Length about 1.5mm., breadth about 1.2mm. 

 exclusive of lamellae, broadly oval, ochreous mottled to dark green, 

 distinctly segmented. Antennae with eight segments, all fulvous 

 except the eighth which is black ; the first segment is very stout, and 

 the second the shortest and stouter than the remaining segments. 

 Legs light brown, with darker tarsi bearing numerous fine spines. 

 Arranged around the body beginning with the second thoracic 

 segment are numerous wax plates or lamellae which are united 

 posteriorly into a long, parallel-sided sac containing eggs and 

 young. 



Adult male: Length about 1 mm., wing expanse about 2.5 mm., 

 body slender, dusky, the last segment bearing a pair of long white 

 filaments ; the two wings ovate, transparent, with two veins united 

 at the base. 



This species is a destructive pest in greenhouses, attacking 

 Coleus, Lantana, Verbena, Chrysanthemum, and many other kinds 

 of plants. 



Hartford, 28 Feb., 1905. 



Subfamily Dactylopiinae. 



This subfamily contains a number of forms which differ greatly 

 in structure and appearance. Some are soft-bodied and motile, 

 with a copious secretion of white wax ; while others, like 

 Astcrolecanhim and Kcrmes, are hard and smooth and are fixed 

 upon their host plants. Several species are important pests of 

 vegetation. 





