A small beetle of the family Halticidae, of many
species. They have strong posterior legs and leap like fleas. The
turnip flea-beetle (Phyllotreta vittata) and that of the grapevine
(Graptodera chalybea) are common injurious species.
1. The quality of being expedient or advantageous; fitness or suitableness to effect a purpose intended; adaptedness to self- interest; desirableness; ...