Cockroach Life Cycle, Lifespan – Details you must know

Cockroach Life Cycle, Lifespan – Details you must know

What is Cockroach? – Cockroach (also called roach) is a common insect in all over world and most common pest in many homes. It a scavenging insect that look similar to beetle, also typically a broad and flattened body along with long antennae and legs. Cockroach word originate from spanish word cucaracha (crazy bug).

Roaches are wing insects found in nearly every part of the world. Roaches from Insecta class and Blattaria order and omnivorous in nature.


Kingdom Animalia
Phylum Arthropoda
Class Insecta
Order Blattaria
Common Name Cockroach
Scientific Name Blattaria
Diet Omnivore
Location Almost every part of the World
Size 0.5 to 2 inches (1.5—5 cm)
Number of Species more than 4000
Life Span0 Approx one year 6 month (18 month)
Skin Type Shell
Color Brown, Tan, Black
Special Feature Long antennae and brain located in body not head

Type of Cockroaches

  • German Cockroach (Blattella Germanica) founded in most part of the world light yellowish brown and 10-15 mm in length and smallest domestic cockroaches. Female carry egg case until shortly before the young comes out.
  • American Cockroach (Periplaneta Americana) occurs around the world 35-40 mm in length. Shiny reddish to chocolate brown color.
  • Brown-banded Cockroach (Supella Longipalpa) They also around the world and 10-14 mm long. They has yellow to brown bands on body.
  • Oriental Cockroach (Blatta Orientalis) founded mainly in cool temperature regions. It’s blackish 20 to 27 mm long
  • Australian Cockroach (Periplaneta Australasiae) They occurs in tropical and subtropical areas and similar to American cockroaches. It has pale yellow stripes on each forewing extending for about 1/3 its length.
  • Smoky Brown roaches, Florida Woods roaches
  • Dubia Roaches
  • Florida Woods Cockroaches

Cockroach Life Cycle 

Roach are relatively primitive and having only three stages in life cycle – Egg, Nymph and Adult (Mature) stage.

Cockroach Reproduction – Female deposits its egg in groups surrounded by bean-shaped, leathery or capsule called ootheca. Some species carry ootheca several weeks attaches to back end of body, other deposit the ootheca after one or two days.

Ootheca very distinctive and frequently be used to determine the species present. Young roaches or nymph are wingless and few millimeters long, they grow in stages by repeatedly shedding the cuticle or skin and fully grown within few months to a year.

Cockroach Life Cycle
Cockroach Life Cycle

Stages of Life Cycle –

  • EggLife cycle starts with production of egg, adult female produce 10-40 Eggs at a time and carry in ootheca.
  • Nymph (young) –  Newly hatched stage of roach, pest grow by shedding their skin multiple times until reaching adulthood.
  • Adult (Full Grown) – Pests fully grow within weeks to months.

Cockroach Bite – Cockroach can bite human (rarely). While they do not feed on blood and they don’t bite out of defense. They prefer dead skin but can bite anywhere. These are not aggressive or attacking insect.

Roaches waste is dangerous as equal as roach. Cockroach Poop contain several bacteria and protozoa. Also responsible for various health issues. Roaches droppings are perfect indication of infestation.

Cockroach Lifespan

Infestation – Presence of large number of insect in a place. So as to cause damage or disease. Infestation area Kitchen, Store room, Bathroom, Bookstore, Drains & Pipes. Signs of Infestation roaches waste, pest crawls in day and musty smell. Roaches are omnivorous and Read here What do cockroaches eat

Commonly 4-5 type of most cockroaches

American cockroach lifespan Known as largest house infesting roach and lays about sixteen eggs at a tie & produce 6-14 ootheca during lifespan. Average incubation 44 days, species have total 10-13 instars before maturity and it takes 600 days. Adult males can live 362 days and female can live more than 700 days.

Cockroach images with name
Cockroach images with name

German cockroach lifespan It have highest reproductive rate and lays about 20-40 days and 28 days as incubation period. It produce 4-5 ootheca in lifespan. These roaches go through six to seven instars before reaching maturity and takes 103 days. Mature roaches lifespan for male and female is less than 200 days.

Oriental cockroach lifespan They adapted to colder climates and prefer temp 68-84 degree fahrenheit. They unable to produce eggs below 59 degree fahrenheit. Upto 16 eggs a time and produce up to 8 ootheca during lifespan. Incubation period of 60 days. They undergo seven to ten instars & takes upto 589 days. Adult roaches (female) lifespan of 180 days and male have 160 days lifespan.

How To Get Rid of Cockroaches in Kitchen, Home, Bathroom

As we know roaches play a supplementary role in spread of home diseases like diarrhoea, dysentery, cholera, leprosy, plague, typhoid fever, viral disease such as poliomyelitis, allergic reactions, swelling of eyelids and serious respiratory conditions. So many ways for Cockroach control like chemical, non chemical, professional & others.

Effective control is easier in temperate climates then in humid or warm areas. Temperate climate – where cockroach populations cannot survive outdoors in winter.

Control Measures

Environmental Management Cleanliness & Hygiene, Reduction of Accessibility

Chemical Control Dusts powder, Aerosols, Smokes

Baits and traps They have been used for many years in cockroach control still employed in certain situations like offices, lab and particularly if there is resistance to some of insecticides in use.

Repellents Use of repellents in control of cockroaches, application to hiding places to keep roaches aways from such places prevents the distribution and movement. Repellents like several essential oils – mint oil, spearmint oil, eucalyptus oils and other chemical substance.

Overview Cockroach commonly known as unhygienic scavengers in human settlements and sometimes plays a role as carriers of intestinal disease. Roach insects, flattened from top to bottom and two pairs of wing folded flat over back (rarely fly but walk very fast). The colour usually varies from light brown to black and length varies from 2mm to 80 mm.