ladybird(n = noun.animal) lady beetle, ladybeetle, ladybird beetle, ladybug - small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests;
is a kind of beetle
is a member of coccinellidae, family coccinellidae
has particulars: adalia bipunctata, two-spotted ladybug, bean beetle, epilachna varivestis, mexican bean beetle, hippodamia convergens, rodolia cardinalis, vedalia

   Any one of numerous species of small beetles of the genus Coccinella and allied genera (family Coccinellidæ); -- called also ladybug, ladyclock, lady cow, lady fly, ladybeetle, and lady beetle. Coccinella seplempunctata in one of the common European species. See Coccinella. [1913 Webster]
" The ladybirds are usually more or less hemispherical in form, with a smooth, polished surface, and often colored red, brown, or black, with small spots of brighter colors. Both the larvæ and the adult beetles of most species feed on aphids, and for this reason they are very beneficial to agriculture and horticulture." [1913 Webster]

ladybird, n. a coleopterous insect of the family Coccinellidae, with wing-covers usu. of a reddish-brown colour with black spots.

ladybird beetle