CHAPTER Vi. 
CATALOGUE OF INSECTS AND DIAGNOSIS 
OF SPECIES. 
Family.—COCCIDIDA. 
Mate and female larve similar, apterous, naked or covered, 
active. 
Females in all stages apterous ; metamorphosis semi-complete ; 
naked or covered ; active or stationary ; rostrum usually present 
in all stages, sometimes absent in adult; feet sometimes absent 
after larval stage; tarsi where present monomerous; fect, where 
present, ending in a single claw; eyes sometimes absent. 
Male pupz apterous ; naked or covered. Adult males with 
two wings and two halteres ; metamorphosis complete’; rostrum 
present in larva and pupa, always absent in adult ; tarsi mono- 
merous ; feet ending in a single claw; abdomen terminating in 
a spike which forms the sheath of the penis; eyes present in 
adult ; ocelli often large, sometimes exceeding three in number. 
The above characters sufficiently distinguish this family from 
the rest of the Homoptera. Probably the first marks for identi- 
fication of a specimen might be the monomerous tarsus and the 
single claw. ‘The latter is always to be made out, at least in the 
earlier stages of the female and in the adult male. 
GROUPS. 
Larvee active, naked; adult females and 
pupe stationary, covered with separate shields 
or puparia, composed partly of secretion, partly 
of the earlier discarded pellicles; females apo- 
dous after larval stage; abdomen of females 
not exhibiting a median cleft or dorsal lobes Diasprpina. 
