Cockroaches belong to the order Blattodea that also includes termites. Furthermore, over 4,600 species of cockroaches have been identified to date. Of these 4,600+ species, about 30 are found in human habitations and some are considered as pests.
Cockroach species found in India are:
- German cockroach (Blattella germanica)
- American cockroach (Periplaneta americana)
- Brown-banded cockroach (Supella longipalpa)
- Oriental cockroach (Blatta orientalis)
Cockroaches are one of the oldest insect species on earth. In fact, fossil evidence for this group of insects can be traced back to the Carboniferous Period, over 350 million years ago. Interestingly, cockroaches are also quite resilient insects, able to withstand between 6 to 15 times more radiation than humans. Moreover, cockroaches are capable of living without a head for weeks on end. Cockroaches are also resilient to chemicals – if one group of cockroaches succumb to a particular strain of insecticide, the roaches that survive can pass on their resistance to the new generation. This makes cockroaches very hard to eradicate from human households.
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