Swelling of red cockroach
This is another cockroach, which, perhaps, is the mostis common in the UK, but I must say that it still depends on which part of the country you live in. They live in the same places as a common cockroach, with one exception, these guys can run on the ceiling. Aha! So it's better to check the cup, if there is any flotilla there. Another difference of this kind is that the female wears eggs until hatching, while a common cockroach dumps them in a few hours. These insects came to us from North Africa. Both sexes can fly, but they do it very reluctantly. They are also sometimes called "Steam flies".
Red cockroach light brown with two darklongitudinal strips on the thorax (thoracic region). The adults are approximately 1.5 cm long, and both sexes have fully developed wings. The number of eggs in the edema varies from 18 to 50, an average of 32, and the female is swelling up to the very moment of hatching. Female red cockroach sometimes can help nymphs get out of the egg shell.
On average, a full life cycle lasts 60 daysat room temperature. Red cockroach is the most common species in dwellings for several reasons: (1) it has a larger number of eggs in the capsule, (2) nymphs reach puberty earlier than other cockroaches, (3) the female wears an egg capsule and protects the embryos before hatching, ( 4) the red cockroach is small in size and can easily hide and (5) it can quickly develop resistance to insecticides. This species is very active.
Both sexes are winged, although they fly very rarely. They usually travel from place to place in bags of potatoes or onions, in bottle boxes, in cardboard boxes and in food bags. They easily move to new places and pass through very small holes.
Places where the red cockroach lives, have severalgeneral characteristics; they should be warm, dark and have small cracks and crevices or other passages in dark places inaccessible. These places are usually quite wet or located near water and food sources.
Red cockroaches are usually collected in groups. Adult females with edema are deeper in the shelter than other life forms. Because of this, it is very difficult to withdraw, if not to deploy heavy artillery in the form of a pesticide. In populations that have developed resistance to pesticides, individuals can scatter throughout the house. Although the red cockroach is normally most active at night in dark places, people can see it outside normal shelters wherever it can not be disturbed.
- They are 12-15 mm in length.
- They are light brown with two dark strips on the thorax.
- Wings of the same length as the body, the same in both sexes.
- The female is swollen almost to hatching.
- The female produces 4-8 edema for life.
- The edema contains 35-40 eggs.
- Egg ripening takes only a month.
- Nymph reaches adulthood through 5-7 lines, remember, cockroaches do not form pupae.
- The development of the nymph can take from 6 weeks to 6 months.
So, based on the above facts, let's argue:
Suppose that the first female has postponed 1 edema,she gave us 40 eggs. Let's say that there is plenty of food around, and the development of nymphs took 8 weeks, and 50% of these nymphs turned out to be females, let there be 20. Each of these females has postponed one more edema. It's already 20 times for 40 - 800 eggs. Again around full of food, and the nymphs fully developed in 8 weeks, and 50% of them are females. These females again postponed on edema. This is already 400 times for 40 - 1600 eggs.
So, after 9 months we have 16 thousandcockroaches, believing that none of them died during development (mortality rate), but without taking into account the fact that, in reality, females would continue to postpone swelling that would ripen and sore.
The mortality rate of cockroaches, of course, is very high - about 90%, but if you do not fight infection, it can very soon get out of control.
Edema of a red cockroach, containing 35-40 nymphs.