Cockroach,it's a name for an order. Of insects , the most similar of which are characteristic by their oval shape, foul odor and their status of household pests, about 4000 species are known worldwide,most inhabit the warm tropical regions of the globe. About 25 species have attained worldwide distribution due to accidental transport in commerce and their affinity for human habitation.
Common pest cockroaches include the American, German and brow banded, the Asian cockroach began to cause concern in the United States when it appeared in large numbers in Florida in the late 1980's. all but the American cockroach are introduced species to North America.
Noura Abdullah