Cockroaches can measure over one inch in length
Tropical species are known to be larger
Wings - However most species do not fly
Emit unpleasant odors
Produce sound - Madagascar hissing cockroach
Cockroaches are nocturnal - if seen during the day, it is a sign that the cockroach has been pushed out due to overcrowding.
An example of a large specie of cockroach is Gromphadorrhina Portentosa - (Madagascar hissing cockroach)
Cockroaches live off anything they can find although they prefer sweets, meat and starch.
Cockroaches can live on just water for months
Cockroaches prefer to feed on decaying organic matter and inanimate, starchy foods.
The largest wingspan specie is the Megaloblatta Longipennis - 18cms
Largest specie is the Marcopanesthia Rhinocerus - weighs 50 grams
Longest specie is the Blaberus Giganteus - 4 inches
Extinct large species Carboniferous Archimylacris
and the Permian Apthoroblattina
Natural predators - Toads, Frogs, Beetles, Geckos, Iguanas - Parasitic wasp species lay their eggs inside the egg cases of cockroaches - the hatchlings feed upon nearby cockroach eggs
Cockroaches eyes contain more than a thousand lenses allowing them to see multiple things at once
However they are incapable of registering red light.
Their antennae, also known as feelers, are responsible for their sense of smell
Two small hairs on their abdomens - called cerci act as sensors - advantage over predators, as they are senseitive to slight air movements
Salivary glands and esophagus are used to assist digestion
Most of the nervous system is located in the head - however the brain is situated near the stomach
Cockroaches produce egg cases known as oothecae which contains many eggs
Some species carry the oothecae, some drop them
A newly born roach is called a Nymth - they are small but they enlarge through the intake of air and they harden within four hours
Nymths are greyish-brown in colour and darken with every progressive molt.