German Cockroach Size report

German CockroachThe German cockroach (Blattella germanica) is the most widely distributed and difficult to control worldwide household hygiene pest. In addition to stealing food, contaminating food, damaging clothing, books, and destroying computers and other precision instruments, causing economic losses, the main harm is the spread of many diseases.

Due to German cockroaches' strong adaptability and rapid reproduction, it is easy to develop resistance to chemical pesticides, so it isn't easy to control them. The German cockroach has wings, and it can barely fly, although it may glide when threatened. Of the few cockroaches that are household pests, the German cockroach is the most troublesome.

The German cockroach is so closely related to the Asian cockroach that the two look almost identical to the casual observer and could be mistaken for each other. However, Asian cockroaches are attracted to light and fly like moths, while German cockroaches cannot. This post shares more interesting facts about the German cockroach.

German Cockroach General Description

German cockroaches are widely found in human buildings, especially restaurants, food processing facilities, hotels, and nursing homes. They are only found near human dwellings in cold climates, as they cannot survive the severe cold. Although they quickly die outdoors alone, German cockroaches have been found to be one of the most common residential cockroaches around the world.

Appearance

The adult German cockroach is flat oval-shaped with six legs, the body divided into head, thorax, and abdomen. Body length and body-color vary from species to species, but the body surface is generally shiny. Early instar nymphs are small, dark brown to black, wingless, post-winged nymphs, with a distinct pale stripe in the back center. The German cockroach has wings but rarely flies. Males have a pair of abdominal spines on both sides of the posterior edge of the distal abdominal segment, while females have no abdominal spines.

German Cockroach Size

Size And Basic

Adult German cockroaches grow to a length of 13-16 mm (1/2-5/8 inches).

Scientific NameLengthShapeLife Span
Blattella germanica13-16 mm (1/2-5/8 inches)Oval3-6 months

Living Habits

The German cockroach first originated in Africa with high temperature and high humidity, and it still likes to inhabit a relatively warm and humid environment. Nymphs have the same habits as adults. They are harmful phototaxis insects. They hide in warm, humid, and dark places during the day, such as the crevices and corners of furniture such as walls, ceilings, cabinets, and tables; they come out at night to find food, water, and mating.

The females can produce more than 400 eggs during their lifetime, with their average lifespan only being three to six months. With such a short lifespan, infestations grow quickly since the German cockroach can go from egg to adult in less than ninety days.

Feeding

The German cockroach is an omnivorous insect. It not only likes to eat clean food in the households, such as sugar, starch, meat, dairy products, etc. but also likes to eat "food" in an unsanitary environment, such as corrupt food, human food, etc. Sputum and hair, etc. Water is more important to the survival of cockroaches than food. If there is food and water, adults can survive for more than one month; if there is no food and water, it will not exceed two weeks.

German Cockroach Infestation and Control

German Cockroach

German cockroaches are very active insects that prefer to live in tight seams and inclusions and are often mixed in vegetables, clothing, wood, and other items to be brought into homes or shipped to other cities and countries. They can spread invade in a "free-rider" way. If you see a German cockroach during the day, the place has been flooded with cockroaches, and the crevices that can hide are already full of insects or insufficient food and humidity.

Food, water, and nests are the three basic conditions for the German cockroach to survive. Taking measures such as keeping indoor and outdoor clean, controlling food and water, and filling up various gaps and holes in the wall can significantly reduce the environmental capacity of pests and make it difficult for them to breed.


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