Search Results for: Male spiderbeetle

Mating

…just sucked blood. This means that it will also attempt to mate with other males. However, a complete mating with other males is in almost all cases prevented. This is done by a particular fragrance, an alarm pheromone, being released by the harassed male. Like many other insects, bed bugs can communicate by using specific pheromones. The pheromones are released from special scent glands in specific situations, and can trigger a specific behavior…

House cricket

…le. It is only the male cricket that sings and he does so to attract the females. Each male sits in its own little territory and sings, the actual sound being produced by rubbing part of one wing against the other wing. The male also has a short, aggressive piping note, which is heard when another male tries to enter its territory. A love-sick cricket may sing for hours at a time. One industrious zoologist found that a single cricket chirped no le…

Fox

…a triangular face. Like most other mammals, the male is larger than the female. A female fox typically weighs between six and seven kg, while a male fox weighs up to eight kg. Some male foxes can weigh as much as 12 kg. From tail to snout, the fox is about 110 cm long. Biology and behavior Foxes are mainly predators, in the wild they usually hunt animals like, hares, rabbits, deer, birds, and bird eggs. However, they also hunt smaller prey, such…

Rats

…n rat is slightly shorter than the body. Male rats are often larger than female rats. A male rat typically weighs between 250 and 300 g, but they can be much larger. The largest captured rat ever found in Denmark was a wild male rat of 545 gram – over 0.5 kg. The excrement of the brown rat (Rattus norvegicus) is usually 2.0 – 2.5 cm long, blunt at one end and shiny black. The house rat, or the black rat, is slightly smaller than the brown rat. The…

Internal

…ation of the female and finally the transfer of seamen takes place. If the male makes the wrong movements in the dance, the female will perceive him as if he were a different species and reject mating. (Manning 1965). Transport systems for nutrients and oxygen are among the organs that are very different from the equivalents in vertebrates. Insect blood does not run in veins, but runs freely around in the body. The heart is built like a vein of mu…

Brown dog tick

…on that the larvae have only six legs. The development from larva to adult male or female tick occurs through different stages. The newly hatched larva will first search for a host – preferably a dog. The larva selects protected areas on the dog, such as between the toes or inside of the ears. Here they stay for three to six days, where they suck blood, grow spherical and become light gray. They then leave the dog and seek refuge again, and over t…

The Oriental cockroach

…ck and is up to 2.5 cm long. Elytrons are almost entirely missing in the females, but they cover part of the males’ abdomen. The Oriental cockroach cannot fly. It climbs poorly and is mostly found on the floor and often in the boiler room or basement. The preferred temperature is from 20 to 29 ° C. If there is a shortage of drinking water it will, however, seek out cooler places with temperatures down to 12 ° C. The Oriental cockroach egg capsule…

Pigeon tick

…nge skin – until it is finally fully developed as either a sexually mature male or female. If the larva ends up as a male, it only has to worry about having to suck blood from a pigeon once a year. The life of a pigeon tick female is somewhat difficult. Because after mating, she must have a pigeon blood meal for each serving of eggs she lays. A female can lay between 20 and 70 eggs at a time. The hatching takes place after a month. Pigeons ticks c…

Oriental or common cockroach

…Oriental- or common cockroach, female Oriental cockroaches, adults and nymphs among themselves This species is found in the same kind of place as the German cockroach, but usually at an even higher temperature, and it is not as common. The wings are well-developed in the male, but they are reduced to short stumps in the female. The egg capsule contains about 15 eggs, and the female only carries it for a few days. She then deposits it in a dark, s…

Earwigs

…verwinter together in a small hole in the ground. Early in the spring, the male is kicked out and the female decorates the cave as a breeding chamber. The approximately 30 eggs she lays hatch 5-8 weeks later. The offspring resemble the adults but are smaller and do not yet have wings. During the summer, the offspring matures. Earwigs are nocturnal animals, and many new insects are in need of locations, where they can sit dark and protected during…

Bumble bee wax moth

…as it can have a wingspan that can be up to 40 millimeters. The male and female do not look alike. The female is gray-brown with a characteristic black spot in the middle of each of the wings. The male is light gray with dark zigzag bands on the forewings. The larvae of the bumble bee wax moth have a buttery yellow color, while their head is reddish brown. The adult larvae can grow up to 27 millimeters long. Biology and behavior It is not without…

Biology

…This is repeated a few times and, finally, the tick is an adult male or female. The male only needs to feed once a year. The female needs blood after mating in order to lay eggs. A female European pigeon tick lays 20-70 eggs at a time and the eggs hatch within a month. Long lives. What makes pigeon ticks so difficult to handle is their ability to survive for long periods of time without feeding. The life cycle usually lasts 2-3 years, but in cold…

Red-brown longhorn beetle

…the male is seeming slimmer. This is the easiest way to distinguish the females from the males since the differences between the sexes are clear. Biology and behavior The red-brown longhorn beetle is found in July to August. The females lay all their eggs in stems and branches that are rotten and moist. Thereafter, the larvae live in the wood. Typically, it takes about two years before they are fully grown and start to gnaw their way out from the…

Prevention and protection

…d for research, but they have no practical significance, since it is the female mosquito that bites. The female mosquito’s auditory sense is not well developed, and it has never been proven to be useful. Nevertheless, new devices that claim keep the mosquitoes away using sound are regularly introduced. They send out tones which are not very loud but have a high frequency of about 15000-20000 Hertz. The frequency is so high, that the human ear can…

Earwig

…ale and female often spend the winter together until early spring when the male is driven out. The female then prepares a brood chamber in the ground and lays 50 eggs in it. The female earwig is very faithful and remains with her eggs, something which is very unusual in the insect world. She defends them valiantly against enemies, and keeps them clean. Without her care and attention they would be attacked by moulds and would soon die. Even after t…

Earwig

Biology

…which later turns into a female. As a result, the females are larger than males. The female and the male mate in folds of the skin. After mating, the males die and the females burrow into the skin – this takes about half an hour. Here she makes a tunnel which is parallel to the skin surface. Two days later, the first egg is laid. The rest of the female mites’ life is spent laying eggs. At the same time, the mite is digging its way through the ski…

The flour mite

…up to 0.65 mm long. The main characteristic of the flour mite is that the male has a large, thorn-shaped outgrowth on the first pair of legs. The flour mite is the most common mite in humid grain and damp cereal products, especially flour and grain, where the water content is significantly above 13. The flour mite can be found in stocks of hay, straw, canola, seeds and feed. The flour mite can live and reproduce in environments where the relative…

Brown-banded cockroach

…laced in capsules. Each capsule can contain about 10 to 20 eggs, and the female can lay about 5 to 20 capsules in her lifetime. The female lays the capsule in protected areas where there is a good temperature. The warmer it is, the faster the process of hatching the little nymphs goes. This means that a fluctuation between 20°C and 30°C can result in the development process lasting anywhere from 6 to about 8 weeks. At 25°C there is a hatching time…

An unusual family

…n the microscope, you will see up to several mites at once. There are both male and female water mites. The fertilized female mite finds an insect larva (or, in the lack of a better host, a human), which she latches onto and then injects the mouth parts into the skin. After a few hours her abdomen swells up and she is sought out by one or more males. The males then spend the rest of their short lives to crawling on large abdomen of the fertilized…

Crickets

…ce. From the waste dumps crickets invade nearby buildings massively. The female house cricket can lay approximately 1000 eggs within 5 weeks. They are usually placed in a hole as the female bores in moist soil with its egg laying spike (the ovipositor). When lacking moist soil, the eggs can also be placed in damp paper or moist foods. Crickets are among the insects that have incomplete metamorphosis. This means that, like cockroaches, booklice and…

House dust mites

Fig. 90. The European house dust mite (male). (Fain) House dust mite At the beginning of the last century it was discovered that some people have allergic reactions to house dust without being able to find the cause among the then known allergens. House dust allergy was initially considered to be a response to the infected peoples’ own dead skin cells. In 1964, the Dutch physician Reindert Voorhorst reported that he and his team at the University…

Pharaoh ant

…tence with each other. Inside the nest live larvae, pupae as well as the females and queens that take care of the egg laying. But the many workers also stay in the nest from time to time, where they provide food for the nest’s small offspring and generally take care of their needs. The development of the pharaoh ants is happening quite rapidly. In fact, it only takes about 40 days for an ant to undergo evolution from egg to adult, just as their li…

Deathwatch beetle

…t shield against the sides of the passage in the tree. Once the male and female have mated, the female lays her eggs. She lays about 50 eggs, which are placed in cracks, crevices, or old fly holes in the tree. When the eggs hatch, the larvae go down into the wood – which they live on – and where they continue their further development. The deathwatch beetle does not come into being from one day to the next. In building timber, the development can…

The itch mite

…in to dig their own small passages. The mating between the sexually mature male and female mites takes place in a fold of skin on the skin surface, where they meet. When the mating is over, the female is, as described, ready to go out to make her own itch mites on the unsuspecting host, which she fills with eggs. The life cycle of itch mite is not long but lasts only about 14 days. Damage An itch mite can cause some pain and discomfort to its host…

Spiders

…stic house spider in natural size. Spiders usually have eight legs. This female (left) had lost a leg, but continued to live for several months. On the right, you can see a male. Spider Spiders (Araneae) live by catching and sucking other animals dry. For stabbing and killing their prey, they have a set of chelicerae (jaws).The edge of the jaws is a curved, hollow hook, through which venom from the venom gland can be squeezed into the prey. Spider…

Head lice

…he life cycle of a head lice is quite short. From the moment a head lice female comes out of the egg, until she dies, it takes about three weeks. Already after 9-12 days after the female lice have hatched, she can even start mating and laying eggs. And until her death, she can lay between five and eight eggs a day. As described, lice can neither fly nor jump. But that does not mean that they cannot move quickly around the hair. For this purpose, t…

The head louse

…iculus humanus capitis, is a small, flat and elongated insect. The adult females measure 2.4 to 3.3 mm in length. Lice in other stages of their life and the males are smaller. In the front, there is a small head with a mouth and two antennae and two simple eyes. The chest has six legs. Each leg ends in a claw that can grasp a hair. The hind parts are multiarticulate and relatively long. The skin is leathery and tough. Head lice live in scalp hair…

Life cycle

…the dog’s blood and detach from it, hide and develop into adult males or females. Females and males are active and are 3-5 mm long. Males only feed for short periods of time before searching for females that are ready to mate in the dog fur. While males retain their shape after mating, females are engorged. They stay latched to the dog’s skin for 6-50 days and continue to grow as the eggs develop in their bodies. Females that are ready to mate are…

Suspected brown dog tick infestation

…rown dog tick larva (left) is tiny. In the middle is a male. Of the four females (right), one is yet to feed. Silhouettes are in natural size. Ticks on a dog are almost always caster bean ticks that just need to be removed. Caster bean ticks lose the ability to find a host when the temperature drops below 7 °C. If the dog has ticks when it is significantly colder outside, it may be brown dog ticks. High levels of infestation in the house and ticks…