Definition of black beetles:
(n) :
A black scarab beetle, later specifically the African black beetle (Heteronychus arator), a serious pest of grasses in New Zealand.
(n) :
(UK) The oriental cockroach (Blatta orientalis), a large roach from the family Blattidae.
(n) :
(New Zealand) A similar roach native to New Zealand, of species Maoriblatta novaeseelandiae (syn. Platyzosteria novaeseelandia); the Maori bug.
(n) :
Any of various other species of beetle that are black in color, including:
(n) :
An Asiatic rhinoceros beetle (Oryctes rhinoceros), a pest of palm trees in tropical Asia.
(n) :
A member of the European species Pterostichus nigrita (syn. Feronia nigrita).