Cockroach

Blaberidae

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Blattellidae

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Blattidae

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Cryptocercidae

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Polyphagidae

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Nocticolidae

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Cockroaches are insects of the order Blattodea (the name Blattaria is also seen). The names of the order are derived from Greek blatta, meaning "cockroach". There are roughly 3,500 species in 6 families. Cockroaches exist worldwide, with the exception of the polar regions and in elevations above 2,000 m (6,500 ft).

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Among the most well-known species are the American cockroach, Periplaneta americana, which is about 3 cm long, and the German cockroach, Blattella germanica, about 1.5 cm long. Tropical cockroaches are often much bigger. When infesting buildings, cockroaches are considered pests.

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The earliest fossils of cockroaches are from the Carboniferous period between 354–295 million years ago.

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Order: Order (from Latin ordo "row, rank, series, arrangement", Old French ordre from the Latin accusative, ordinem, attested in English from the 1220s). The word conveys a notion of "a system of parts subject to certain uniform, established ranks or proportions", an idea very central to scholastic thoug...

Greek: The noun Greek refers to:...

American cockroach: The American Cockroach (Periplaneta americana) is a large species of cockroach, winged, and growing to a length of 1"-1 1/2". It is very common in the southern United States, and in tropical climates, and can be found in many locations throughout the world, due to its travels via shipping and commer...

Cockroach related Images and Photos (experimental)

A Tiny Wide-Eyed Tarsier (Tarsius Spectrum) Relishes a Cockroach Snack

Close Views Illustrate Various Parts of a Cockroach