Cockroaches are insects. There are 3500–4000 species of cockroaches
four species are well known as pest in India. They are
1. American cockroach, Periplaneta americana,
2. German cockroach, Blattella germanica,
3. Brown-banded cockroach, Supella longipalpa, and
4. Oriental cockroach, Blatta orientalis,
They mostly found in darkness, warmth, dampness, and plenty of organic debris is available.
They are nocturnal and omnivorous, cursorial and fast runners. Cockroaches spend up to 75% of their time in resting in cracks and crevices.