38 CALIFORNIA STATE COMMISSION OF HORTICULTURE. 



Eulecanium crawii Ehrh. 



Female. — Scales not crowding each other; hemispherical, about 3 mm. 

 long, 2 mm. broad, and 1^ mm. high; oval, shiny, brown, getting darker 

 with age. Margin generally lighter than dorsum. 



Before gestation light brown, shiny. Derm, by transmitted light, 

 brown, with numerous oval gland-orifices. Marginal hairs very short 

 and slender. Lateral incisions each with three stout but not long 

 spines. Antennae 7-jointed; joint 3 longest, twice as long as 4; joints 

 5 and 6 very short, joints 1 and 2 about equal. Formula: 3 4 7 (1 2) 5 6. 

 Anal plates broad, but not very large. Anogenital ring with six 

 moderately slender hairs. Legs quite stout; coxa and femur with stout 

 hair; femur very little longer than tibia; tibia and tarsus about equally 

 long. Claw stout and curved. Tarsal digitules moderately stout, 

 knobbed hairs. Digitules of claw not stout, a little longer than claw, 

 more or less club-shaped. 



Larva light yellow, with distinct ridge on dorsum, dividing scale 

 lengthwise. Oval, about twice as long as broad. Rostral loop extending 

 to third pair of legs. 



On Acer macrophyllum. 



Parasite: Comys J'usca, was reared from this species. 



Eulecanium pruinosum Coq. 

 (Frosted Scale.) 



Adult Female. — Pale brownish, thinly covered wdth a whitish 

 powder, which does not conceal the ground color. Body ol^long in out- 



FIG. 17. Eulecanium priu'nosn.m (Frosted Scale). On prune; about 

 natural size 



line, very convex above, not distinctly carinate, the surface very uneven. 

 Margins nearly perpendicular; dimensions as follows: Largest speci- 

 mens, length, .28 of an inch; width, a trifle over .20 of an inch; height, 

 .12 of an inch. Smallest full-grown specimen, length, .16 of an inch; 

 width, .12 of an inch; height, .08 of an inch. Antennae much thickest 

 at the base, 7-jointed; joint 6 the shortest, then 5, then 1 and 2, which 

 are subequal in length; joints 3, 4, and 7 are also subequal in length, 

 each nearly twice as long as 6; joint 7 tapers to the tip, and is furnished 

 with a style, being about three fourths as long as this joint; anal cleft 



