black beetle

from The Century Dictionary.

• noun An English name of the common cockroach of Great Britain, Blatta (Periplaneta) orientalis, a large black orthopterous insect, of the family Blattidæ. See cut under Blattidæ.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Used other than as an idiom: see black,‎ beetle.
• noun The oriental cockroach, Blatta orientalis (a large roach from the family Blattidae).
• noun New Zealand Platyzosteria novae-zelandiae, a similar roach native to New Zealand.
• noun this sense?) A common name for many species of beetle that are black in color. including:

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun dark brown cockroach originally from orient now nearly cosmopolitan in distribution