[1] : The Collaborative International Dictionary of English v.0.48

ladybird \la"dybird`\, n. equiv. to, bird of our lady.
   zool.
   any one of numerous species of small beetles of the genus
   coccinella and allied genera family coccinellidae; --
   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

   note: 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 larvae and the adult beetles
         of most species feed on aphids, and for this reason
         they are very beneficial to agriculture and
         horticulture.
         1913 webster
see also:
coccinella coccinellidae ladybug ladyclock lady cow lady fly 
ladybeetle lady beetle coccinella seplempunctata 

Coccinella >> C Words
Coccinella, definition of term: Coccinella
coccinella_pag1.html