No. 34-] HEMIPTERA OF CONNECTICUT: COCCIDAE. 367 



D. boisduvalii (Signoret). 



Ann, Soc. Ent Fr., ix, 432, 1869. 



Scale of female : Diameter 2 mm. ; white or light gray, nearly 

 circular, sometimes slightly elongated. Exuviae large, darker, 

 nearly central. 



Female: Thoracic segment prolonged at each cephalo-lateral 

 angle to form a large tubercle. Median lobes large, separate at 

 base, divergent, inner margins strongly curved and sharply serrate. 

 Median group of circumgenital gland-orifices 8-16; anterior 

 lateral 20-28; posterior 15-18. 



Scale of male: Length .75-1 mm.; white, and distinctly tricari- 

 nate, usually massed in large numbers, and covered with woolly 

 filaments. 



On palms, orchids, etc., in greenhouses. Recorded from 

 Canada, New York and Massachusetts. 



New Haven, 27 Feb., 1906. 

 D. bromeliae (Kerner). 



Naturg. Ins., 20, 52, 1778. 



Scale of female : Diameter 2.25-3 "^"^- \ nearly circular, flat 

 convex, whitish semitransparent, sometimes covered or partially 

 covered with scurfy epidermal layer of host; exuviae near the 

 margin, varies from yellow to pale brown. 



Female : Similar to boisduvalii, but without tubercles at cephalo- 

 lateral angles of thoracic segment of body and pygidium with 

 much smaller median lobes which diverge, their inner margins 

 nearly straight and sharply serrate; median group of circum- 

 genital gland-orifices, 8-9; anterior lateral, 14-20; posterior 

 lateral, 13-17. 



Scale of male: .75-1 mm., white and tricarinated, resembling 

 male of boisduvalii but having a less number of woolly filaments, 

 and the exuviae are darker. 



Occurs on Bromelia, Hibiscus, pineapple and other plants in 

 greenhouses; is an important pest of pineapples where they are 

 grown. 



Has been recorded from Massachusetts ; though without definite 

 records, it probably occurs in Connecticut. 

 D. carueli Targioni-Tozzetti. Juniper scale. 



Catalogue Cocc, 43, 1869. 



Scale of female: Diameter .75-1.75 mm. ; average i mm., nearly 

 circular, irregularly pyriform, very convex; white or dirty gray, 

 often covered with a sooty deposit; exuviae inside the margin, 

 pale yellow or colorless. 



Female: Median lobes small, separated, parallel, entire or 

 faintly notched or scalloped, not serrate. Median group of cir- 

 cumgenital gland-orifices, 5-8; anterior lateral, 10-13; posterior 

 lateral, 7-9. 



