Image:Periplaneta americana USDA ARS.jpg
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current | 03:48, 5 September 2006 | 1,807×2,700 (989 KB) | NTK | (A tough and wily adversary, the cockroach has survived countless attempts to curb its domain and lifestyle. Here, ARS entomologist Richard Brenner loads a petri dish with an experimental bait to see if American cockroaches, Periplaneta americana, are susc) |