Search Results for: Female phymatodes testaceus

Phymatodes testaceus

(Latin: Phymatodes testaceus) Tanbark beetle (Phymatodes testaceus ), female There are different colour variants of this beetle, some having yellowish elytra, some blue. The life cycle is the same as that of the preceding species with the sole exception that the present species only attacks hardwoods, such as beech, birch and oak. In a house the first sign will normally be the adult beetles, seen crawling around the room, and as they must necessa…

Tanbark borer

…he most common insects in Denmark is the tanbark borer with the Latin name Phymatodes testaceus. The tanbark borer belongs to the genus of wooden borer. The members of this genus have long, curved feeler horns reminiscent of goat horn. Appearance When the tanbark borer is fully grown, it is between 10 and 15 millimeters long. Its breast usually has an orange color, while its coverts are characterized by a blue color. However, there are also varian…

An unusual family

…roscope, 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 female. W…

Biology

…ther turned into males or the second nymph stage, 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…

House longhorn beetle

…hich – when she rests – stick out behind her coverts like a small pin. The female places her eggs about 20 millimeters inside the cracks in portions of 20 to 30 eggs. A house longhorn beetle female lays eggs for a few weeks, and during this period she can manage to lay several hundred eggs. The adult house longhorn beetle only lives for 10-15 days. After the larvae have hatched from the eggs, they gnaw into the tree through a small hole. Their jou…

Internal

…e is near. It performs a complicated dance that ends with palpation 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 f…

Brown dog tick

…ale or female brown dog tick. After this, the life course of the males and females differs slightly from each other. Subsequently, the female is sucked on her host from 6 to 50 days, where she swells a lot, while the male is sucked on his host for a shorter time and does not grow significantly anymore. The males spend more time wandering around the dog’s fur looking for females to mate with. After mating, the brown dog ticks leave their host and t…

Exit-holes in timber

…e bark on (see pp. 132 and 163). Phymatodes testaceus exit-holes in timber Phymatodes testaceus The oval exit-holes measure c. 6 x 3 mm. This species only attacks timber from deciduous trees. The larval tunnels lie just below the bark and are full of wood dust, with a mixture of dark and pale particles. The exit-holes are always in the bark, the oval holes in the timber itself being the openings of the pupa chambers. Common in wood logs (see p. 1…

Sounds

…mouse. Among the cerambycid beetles the larvae of Callidium violaceum and Phymatodes testaceus can often be heard gnawing beneath the bark. Callidium is particularly common in the bark edges of, for example, roof timber made of softwood, while Phymatodes occurs in fire logs of birch and beech. The larvae of the house longhorn can also be heard from time to time, particularly on warm summer days when they are most active and their appetite reaches…

The German cockroach

…small nymphs can hide in crevices, which are only 1.6 mm wide (a pregnant female needs 4.5 mm). The development takes about 2 months at 30 ° C, whereas it takes six months at 21 ° C. German cockroach, female with egg capsule German cockroaches are most comfortable in moist, warm areas with access to water. They climb well and can be found throughout the rooms from floor to ceiling. Dispersal of the cockroach is quite passive. The insects are tran…

Pigeon tick

…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 can live a long life and their normal life cycle lasts between 2 to 3 years. However, there are also reports of large populations of pigeon ticks in G…

Mating

…s freely around the organs. The sperm end up in a couple of pouches on the female’s oviducts, called spermathecae. Here they remain viable as long as the body temperature is normal and there are plenty to fertilize all the eggs the female lays in its lifetime. There is nothing to suggest that the two sexes can recognize each other from appearance, special pheromones or behavior. A male in rut will attempt to mate with other bugs of a certain size…

Prevention and protection

…sed 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 ca…

Fur beetle

…ed on nectar and pollen. However, the larvae cannot live on this diet. The female fur beetle typically lay their eggs in mice or bird’s nests. Here there is plenty of fur and/ or feathers, which the larvae nourish on. The female fur beetle can typically lay between 50 and 100 eggs. The development from egg to adult depends on temperature, food availability and humidity, but their development usually takes over a year. Since both males and females…

Wharf borer Beatle

…vironment for her to lay her eggs, she goes exclusively for dead wood. The female most often prefers conifers such as pine, but deciduous trees can also be used for this purpose. Her larvae must live off the wood inside the tree. Therefore, the female has high demands in regard to the quality of the wood. Among other things, it is important that the wood does not dry out while the larvae are inside the wood. And the larvae also seem to thrive best…

Head lice

…The 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,…

The itch mite

…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. But it…

Bats

…on. For instance, under a roof. A colony can consist of between 20 and 200 females. In some cases, bats seek in and spend the night on ceilings and overhangs on houses. You can read more about bats in houses at the Danish Nature Agency. A female usually has one offspring, but in some species, it is not unheard of for her to have two offspring at once. The newborn cubs are completely naked and completely helpless. After 4 to 5 weeks, the young bat…

Oriental or common cockroach

…phs 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, sheltered place and after about two months it splits open and the small nymp…

German cockroach

…arries on the egg capsule right until the chicks are ready to leave it The female lays her eggs in a special brown capsule which is divided into 30-40 small compartments, each containing a single egg. In the German cockroach the female carries this egg capsule protruding from her genital aperture until the small, wingless young are ready to hatch out. At room temperature the full development to the adult stage takes about 6 months. Cockroaches are…

Brown-banded cockroach

…placed 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 ti…

Banana flies

…ds. The female also lays her small whitish eggs in these surroundings. The female can lay 25 eggs in one day, just as she can lay 200 eggs in total in her lifetime. The female’s eggs take about a day to hatch. And out of the eggs come the small larvae that search down into their edible surroundings. The larvae then undergo their development from larva to adult banana fly. A process that lasts 4-5 days, after which they pupate. Inside the pupa – wh…

Biology

…k 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 environments the ticks can starve for several year…

German cockroach

…the German cockroach does not throw the capsule after laying. Instead, the female carries it around until the cubs can move and take care for themselves, in this way, she also protects the eggs from drying out. The hatching time is approx. 28 days. The female lives for 120-170 days and produces 5-6 egg capsules with as many as 30-40 eggs in each. The development of the young cockroaches happens through 6-7 nymph stages, where the nymphs are small…

Earwig

…nd 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. Lesser earwig, Labia minor, eating f…

Ticks

…body. When the adult male tick is fully grown it is 2-3 mm long, while the female is 3-4 mm long. The mentioned size only applies when they have not been feeding. As soon as the tick have feed their size expands incredibly, and a blood-filled female tick can become 1.5 centimeters long. The blood is stored on the hind body in a reddish-brown and leathery skin. Biology and behavior The population of ticks varies in Denmark. The reason for this is t…

Earwig

Rats

…hey multiply quickly inside buildings, where there is heating. The average female rat gives birth to three to five litters each year, and each of these litters contains of 4-12 rats. A female rat is pregnant for about 22 days, just under a month. The sexual maturity of the individual rat depends on weight and age. Typically, a rat will be sexually mature at three months, where it weighs 150 grams. The rat makes nests of a variety of soft material….

Common woodboring beetles

…they begin to mate. This often happens in the female’s fly hole, where the female beetle can lay between 20 and 60 eggs. The female lays her eggs in protected areas consisting of wood. Cracks and holes in woodwork or dead trees are obvious places for laying eggs. As mentioned, she can also lay her eggs inside the fly hole. They prefer to find places with high humidity as this provides the optimal conditions for the eggs. The eggs of the common woo…

Index

…fcutter Peacock butterfly Pediculus humanus capitis Pediculus humanus corporis Periplaneta americana Phalangium opilio Pharaoh ant Pholcus phalangoides Phthirus pubis Phymatodes testaceus Pieris brassicae Pigeon bug Pigeon tick Pigeons Pine sawyer Pine weevil Piophila casei…