The German cockroach is the most economically important urban pest.
It is the most common cockroach species in houses, apartments,
restaurants, hotels, and other institutions throughout the Untied
Oriental Cockroaches, Blatta orientalis (L.), are large very dark
(almost black, but sometimes dark reddish-brown), shiny cockroaches
which live in sewers and similar wet, decaying organic matter. They
are sometimes called "water bugs" because they come out of drains,
and "black beetle cockroaches" because of their smooth, dark
bodies. Males are about 1 inch long, with wings that cover only
about 3/4 of their abdomen; females are about 1 1/4 inch long, and
have only short stubs of wing pads.