No. 34-] HEMIPTERA OF CONNECTICUT: COCCIDAE. 37 1 



Female: Caudal margin deeply notched, the median lobes con- 

 fluent at base but widely diverging from the margins of this notch ; 

 these lobes are serrate on the inner free margins. There are five 

 groups of circumgenital gland-orifices, the median being contin- 

 uous with the anterior laterals, the posterior laterals separate and 

 arranged in a double row ; median about 9 ; anterior lateral, 9-12 ; 

 posterior lateral, 12-16. 



Scale of male : Resembles that of female but smaller. 



On palms, ferns and many other plants in greenhouses. 

 Probably occurs in Connecticut though definite records are not at 

 hand. 



Aspidiotus Bouche. 



Female scale nearly circular, slightly to strongly convex. 

 Exuviae nearly central forming a nipple; secretionary covering 

 either thin and transparent or thick and opaque, easily rubbing off 

 from the nipple showing the color of the exuviae. Male scale 

 usually oblong-ovate, resembling female in color and texture. 



Key to Species. 



1. Pygidium of female without groups of circumgenital gland-orifices 2 

 Pygidium of female with groups of circumgenital gland-orifices 



present 3 



2. Only one pair of lobes, notched on each margin ulmi 



More than one pair of lobes ; median lobes notched only on outer 



margins perniciosus 



3. Gland-orifices arranged in four groups 4 



Gland-orifices arranged in five groups 8 



4. Median lobes notched on both outer and inner margins 5 



Median lobes notched only on outer margins comstocki 



5. Median lobes large and prominent 6 



Median lobes small, separated abietis 



6. Median lobes longer than broad 7 



Median lobes as broad as long cyanophylli 



7. Median lobes narrow, parallel, converging hederae 



Median lobes almost trilobed brittannicus 



8. Median lobes notched on outer margins only, sometimes entire 9 



Median lobes notched on both outer and inner margins uvae 



9. Median lobes rather broad, or distinctly converging 10 



Median lobes narrow, inner margins nearly parallel 11 



10. Median lobes notched near tips; second lobes narrow two- or 



three-notched on outer margin, chitinous processes rather small 



and straight * juglans-regiae 



Median lobes notched near middle; second lobes narrow, notched 

 on outer margin ; chitinous processes larger and curved or twisted 



forbesi 



11. Median lobes long, entire, or roundly notched on outer margins; 



second and third lobes rudimentary osborni 



Median lobes notched on outer margin, second lobes broader than 



and half the length of the median lobes, wavy, on apical margin 



ostreaeformis 

 Median lobes rather short, somewhat separated, notched on outer 



and occasionally on inner margins, second lobes not projecting 



beyond margin of pygidium ancylus 



