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The German cockroach (Blattella germanica), colloquially known as the croton bug, is a species of small cockroach, typically about 1.1 to 1.6 cm (0.43 to 0.63 in) [1] [2] long. In color it varies from tan to almost black, and it has two dark, roughly parallel, streaks on the pronotum running anteroposteriorly from behind the head to the base of ...
German cockroaches are ¼ to 3/8 inches long and pale brown or tan with two dark streaks behind the head. “German cockroaches are the biggest pests worldwide,” says Oi.
Cockroaches nestling together transfer insecticide to one another by touch. Fipronil acts as an insecticide with contact, and stomach action. It is sparingly soluble in water and is stable at normal temperatures for one year. Fipronil is an extremely active molecule and is a potent disruptor of the insect central nervous system. [5]
A cockroach's cells divide only once each molting cycle (which is weekly, for the juvenile German cockroach [68]). Since not all cockroaches would be molting at the same time, many would be unaffected by an acute burst of radiation, although lingering and more [ clarification needed ] acute radiation would still be harmful.
The ancestors of German cockroaches pestered people about 2,000 years ago far from Germany, a study found. Here’s how the critters achieved global domination. How one of the world’s most ...
They confirmed that the German cockroach — a species found worldwide — actually originated in southeast Asia, likely evolving from the Asian cockroach around 2,100 years ago. Scientists have ...