35 
Coccophagus cognatus Howard. 
Coccophagus cognatus Howard. Report Entomologist, Ann. Rep. U. S. Dept. 
Agric, 1880, p. 359. 
Female. — Length, 1.2mm.; wing expanse, 2.1 mm.; greatest width of 
fore-wing, 0.34 mm. Antennae not quite so long as thorax. General 
color dark brown, nearly black; last half of mesoscutellum and tip of 
metascutellum orange-yellow; anterior coxa?, femora, and tibia?, fus- 
cous; tarsi whitish, last two joints slightly dusky; middle femora and 
coxa? nearly black, tibia? somewhat dusky, tarsi as with fore tarsi; 
hind coxa?, femora, and tibia? dark, tibia? as with others. 
Male.— Length of body, 0.6 mm. ; expanse of wings, 1.4 mm. ; greatest 
breadth of fore-wing, 0.25 . m. Antenna? nearly as long as head and 
thorax together. General color brown; scutellum and metascutellum 
just tipped with light yellow-brown. In all other respects resembles 
the female. 
Described from many specimens. Parasitic upon Lecanium hesperi- 
dam, district of Columbia (Department of Agriculture); Lecanium on 
plum, Bramley, Ontario (J. Fletcher and T.D. A. Cockerell); Lecanium 
pcrsicw. Lake Shore and Mapleville, Md. (Department of Agriculture). 
Coccophagus immaculatus Howard. 
Coccophagus immaculatus Howard. Report Entomologist, Annual Rep. U. S. 
Dept. Agric., 1880, p. 358. 
• Female. — Length, 1.2 mm.; wing expanse 2.35 mm.; greatest width 
of fore- wings, 0.47 mm. Antenna? slightly longer than thorax. Meso- 
scutum and mesoscutellum sparsely furnished with round punctures, 
of which there is a regular row around hind border of mesoscutum. 
Between the punctures is a faint shagreening. All hairs blackish, 
metauotum honey-yellow. General color black; eyes reddish brown, 
with a yellowish border above; ocelli dark red; antenna? light yellowish 
brown, with dark brown longitudinal carina? on each joint except scape 
and pedicel; mesoscutellum shining black, slightly metallic in some 
lights; wing veins dark brown; front femora black; middle and hind 
femora black, except at base, which is whitish; front tibia? dusky, light 
at knees; middle and hind tibia? light yellow; all tarsi whitish, last 
joint fuscous; front coxa? dark brown, middle and hind coxa? and all 
trochanters yellowish; ovipositor yellow, sheaths brown. 
Male. — Length, 0.9 mm.; wing expanse, 2.3 mm.; greatest width of 
forewing, 0.43 mm. Antenna? as long as thorax; club compact, the 
lines separating the joints of the club somewhat oblique. Colors as 
with female, except that metauotum and all coxa? are black. 
Described from three males and three females. Parasitic on Eriococ- 
cus azalea^ District of Columbia (Department of Agriculture). The 
punctured scutellum is unique. 
