120 REPORT OF NEW JERSEY STATE MUSEUM. 



A. morrilli Britton. Connecticut and New York; locally very abundant 

 on "Impatiens fulva" (W. E. B.), and will probably be found in New 

 Jersey. 



A. mori Quaintance var. maculata Morrill. Massachusetts and Connecti- 

 cut, on ash, hornbeam, catalpa and hackberry, a'nd should occur in 

 New Jersey (W. E. B.). 



A. packard i Morrill. Massachusetts, Connecticut and probably through- 

 out the eastern United States on strawberry (W. E. B.). 



A. vaporarium West. The "white fly" or plant-house "Aleyrodes." A 

 common pest of green-houses throughout the State. "It has been 

 found on over sixty different kinds of plants, but is especially in- 

 jurious to tomato, melon, cucumber, ageratum lantana, fuchsia and 

 heliotrope when grown under glass" (W. E. B.). 



A. waldeni Britton. Described from Connecticut, but will probably be 

 found in New Jersey. Occurs sparingly, but widely scattered, on 

 leaves of "Juglans cinerea" and "nigra" (W. E. B.). 



The "A. brassicaa Wlk." of the previous edition is probably not found in 

 America at all. 



Family COCCIDvE. 



These are the "scale insects," broadly speaking, characterized by a 

 degraded, larva-like form in the female, and by the presence of a single 

 pair of wings only in the male. The latter is further peculiar in having 

 a complete metamorphosis, a long anal style or filament and an extra 

 pair of eyes replacing the mouth, which, in this sex, is not used at all 

 for feeding purposes. 



There r are several sub-families, differing much in habit and structure, 

 but in New Jersey we need refer to only three main series, the "mealy 

 bugs," included in the "Dactylopinae" ; the "soft scales," included in the 

 "Coccinae," and the "armored scales," included in the "Diaspinse." In the 

 "Ortheziinee" we have no out-door species. In the "Dactylopinaa" there 

 are the ordinary "mealy bugs" of the green-house, having no sort of pro- 

 tective covering, and therefore easily reached by penetrating contact in- 

 secticides; the species, of "Phenacoccus" and allies, which have long 

 waxy filamentous secretions, partly or wholly covering the insects at cer- 

 tain seasons; and the species of "Kermes," occurring mostly on oak, which 

 have no powdery or filamentous covering. The species of "Phenacoccus" 

 may be reached during the winter by diluted oil mixtures, and in sum- 

 mer, when massed, may be often destroyed on shade trees by solid jets of 

 water. 



The soft scales are species of usually considerable size, waxy surface 

 texture, and more or less convex form. The "scale" is merely the thick- 

 ened surface of the insect itself, and not a separate or separable structure. 

 These insects are not easily reached by insecticides, except in the larval 

 stage, and we have several of them that are more or less troublesome, 



