Search Results for: Lacewing/feed/Common house mite

Animal names and systematics

…worms, molluscs, arthropods and vertebrates. The worms are represented in houses only by earthworms. The molluscs, a group that includes snails and bivalves, are not normally found in houses, except for certain slugs that occur in cellars. The vertebrates or animals with a vertebral column include fishes, amphibians, reptiles, birds and mammals, including of course man. Arthropods are animals with jointed legs. The group contains the crustaceans,…

The leather beetle

…similar are imported from overseas. The leather beetle is one of the most common of these. It is quite common in Southern Europe and in countries from which we import raw hides. The leather beetle larvae have the same urge to wander and chew on everything before pupation, as the two above mentioned. The leather beetle requires heat and can usually not survive in Northern Europe, but in some cases it has established itself in factories for meat, f…

(6) The cigarette beetle and the drugstore beetle

…rette beetle. In Northern Europe, the cigarette beetle is forced to be strictly synanthrope while the drugstore beetle is not as strictly dependent on people. The drugstore beetle is common in pigeons’ nests in houses. Here it lives in dry and compact pigeon excrement, which represents a large proportion of nest material….

Horse-flies

Fig. 42. A horse fly (top), a deer fly (left) and a common horse fly (right). (Lindner, Seguy and Rietschel, respectively) In Denmark, there are a dozen different horse-fly species of the family Tabanidae. The biggest fly in Denmark is a horse-fly, namely the 3 cm long pale giant horse-fly, Tabanus bovinus. However, it is mainly the smaller species which can become so numerous that they become troublesome: deer flies of the genus Chrysops, which…

Cat fleas

…are a major annoyance in several homes, and cat fleas are one of the most common types of fleas that your pet can bring home. Although cat fleas mainly live in fur, they can also bite humans, and their larvae can survive in for instance floor cracks and the like, until they are large enough to jump on either animals or humans. These blood-sucking insects most pet owners will encounter at least once, but they are fortunate to get rid of again. App…

Occurrence

…areas: In the neck and behind the ears. Age and sex. Lice are not equally common to all people. In young children – under 4 years – head lice are seen equally often among boys and girls. As children get older lice are more common in girls/women. In men older than 18 years of age, head lice are virtually an unknown phenomenon. Race. Lice can customize their color according to the color of the scalp of the person on whom they live. This trick that…

Spreading of crab lice

…few hours, those homeless crab lice might climb on to the other people who come into contact with the bedding, the clothing or the toilet seat on which the lice landed. Crab lice are no longer as common as they have been. This is attributed to the shaving of the pubic hair, which has become increasingly common and reduces the amount of hair for lice to live on….

False scorpion

…y are too small and cannot bite through the skin. Several species are very common outdoors, where they live a sheltered existence under moss, among fallen leaves, and in similar places. Some species are also common on dunghills where their prey includes the eggs and small larvae of flies. Sometimes they also attach themselves to the adult flies, not in an attempt to kill them or to suck their juices, but rather to use them as a convenient and rapi…

The white-marked spider beetle

…es together in the back and draws a V. On the elytrons there are 4 white-yellow spots….

The rust-red flour beetle

…he tip. Both in terms of biology, harmfulness and extermination the rust-red flour beetle is closely related to the previous mentioned species. Temperature-wise, it prefers a few degrees more and is accordingly to this the more common of the two species in tropical regions. In the temperate parts of the world it is not as common as the confused flour beetle. With a monthly multiplication rate at about 70, it holds the record of the insects in this…

Life cycle

…re may be many lice on a head but after a while there will be fewer. It is common that the population steadies, so that in a very long period, there are only 100-200 lice. Of these, 90% are in the nymph stages, 7% are females and 3% are males. With a steady number of lice, where the females each lay 8 per nits each night, the daily mortality and level of emigration must be quite high. Up to 56-112 nits are laid each day to maintain a population of…

Pigeon bug

…( Latin: Cimex columbarius ) Possibly only a subspecies of the common bed bug, and sometimes known as C. lectularius columbarius. It occurs in dovecots and in attics where feral pigeons roost. It is very voracious but fortunately not very common….

Scabies from animals

…weeks or more. Scabies and pseudo-scabies are of allergic reaction to the mites’ presence in the skin. The first mites that burrow, does not cause any symptoms. They merely activate the immune system. It is not until a few weeks after the infection that the skin will react to new mites with papules and itching. If you have had scabies before – either human scabies or pseudo-scabies – your immune system is already activated and your skin will reac…

The Lardoglyphus zacheri

…for dogs), but can also be seen in charcuterie. In response to starvation, mites can extend its life cycle with an extra stage, the so-called hypopus stage, which is resistant to adverse environmental conditions, especially dehydration. In the hypopus stage the mites are transported around by larvae of flesh-eating beetles, typically leather beetles. High amounts of the Lardoglyphus zacheri cause meat products to curve, and they give meat an exudi…

Ear mites

…em. Cats can be infected by so many ear mites that they fall of when the cat moves around. Rabbits are infected by another kind of ear mite. The ear mites cannot spread to humans….

Fur mites

…2-0.5 mm long. They live their entire lives in the fur of mammals. The fur mites that are of interest to people live on dogs, cats and rabbits. None of fur mites can live or breed on humans. However, they may crawl onto humans and bite. Fur mite bites cause an itchy skin disease called cheyletiellosis or walking dandruff. It is difficult to diagnose. It often takes several visits to the doctors and veterinarians before the diagnosis is made. You c…

Invertebrates and hygiene

…their attacks on the skin (see p. 33). Others may increase sensitivity, as mites do, for example, in the case of asthma (see p. 35). In rare cases the presence of certain in- vertebrates in foodstuffs may constitute a danger to health, as for instance when there are fly larvae in meat or large numbers of mites in cereal products. In addition, the mere presence of completely harmless animals has a depressing effect on certain people. There are seve…

Life cycle

…hair roots. The egg sacs are easily seen through a microscope. (Rack) Fur mites lay eggs. Each female lays one or two at a time and they are placed in a distinctive web and secured to a hair close to the skin. This egg hatches into a pre-larva which is similar to a fly larva with finely speckled skin and a few protuberances on the anterior end. The relevance of this stage is unknown, and the pre-larva does not leave the egg. Inside the pre-larva,…

Tyrophagus longior

…Tyrophagus longior Latin: Tyrophagus longior This mite is very similar to the preceding species and thrives in the same kind of place. It feeds mainly on moulds which grow on damp goods, but seldom becomes a serious pest….

Prevention

…es. If the animal should be washed for other reasons, you might as well use a pesticide shampoo….

Life cycle

…mites are red and approximately 2 mm long and 1 mm wide. On bare peat soil, big, bright red mites are often seen. These are is the so-called velvet mites. They are related to the harvest mite, but are harmless to humans….

Mites and ticks

…( Latin: Acari ) In Europe it is only the itch mite which can be regarded as an important parasite of man, but other mites may occasionally cause trouble. Some can suck blood, while others are responsible for hypersensitive reactions….

Ticks

Ticks are a kind of large mite that sucks the blood of larger animals. Ticks leave their host between blood meals and it is not very likely that they will find the same host the next time they need to suck blood. The castor bean tick and the brown dog tick must have a total of three blood meals (as larvae, as nymphs and as adults). The pigeon tick needs a total of five blood meals. The risk of not being able to find the next host is quite large….

Wasps

…material that the wasps make of wood fibre chewed with saliva. The larvae feed exclusively on meat. Their preys are mostly insects, which the adults catch for them, or it may be chunks of meat that adults bite of carrion. In exchange for the meat chunk that the larvae receive, it regurgitates a sugary liquid up which the adult wasp eagerly eats. The adult wasps primarily live of sugar in the form of nectar, aphid excrement and the like. In the au…

Scorpions

…during the day under rocks or loose bark; some species hide in crevices in houses. Scorpions produce live young which are at first tended by the mother, and in fact they are carried round on her back for the first couple of weeks. Scorpions feed on insects and spiders which they seize with their claws (known technically as palps). In some cases they kill the prey with venom injected by the sting, although this organ is primarily defensive. The sco…

Woodboring beetle

…mm. The dust from the fly hole will be dark yellow, as the wood the beetle feed on is rotten. The natural habitat for the beetle is rotten coniferous trunks or branches. But they can also be found in fence posts. The adult woodboring beetle overwinter inside the wood. Damage The woodboring beetles attack wood that has been softened by fungus or rot. Places to find the beetle are most other completely sealed tree like beams and rafters. The larvae…

Silverfish

…ch occasionally gnaw textiles. They will, for example, attack artificial, cellulose-based silk, such as the red ribbon used in Christmas decorations and in gift wrappings. Silverfish Other insects which occasionally attack textiles include cockroaches and meal- worms, which sometimes feed on soiled linen. On account of their size, mice and rats often cause serious damage to textiles when they are collecting nest material. In empty holiday houses w…

Thrips

…a tickling sensation, and because they have a tendency to creep beneath clothing and into ears, mouth and eyes. Although, as already mentioned, they are plant suckers their mouthparts can penetrate human skin. Under certain circumstances thrips enter houses in large numbers. They have a special habit of creeping into narrow spaces and they are therefore found behind wallpaper and even behind the glass of pictures. However, they soon die in the dr…

Dust lice

…ut. An advantage of having dust lice on damp walls is that they do eat and feed on the mold that can be found there. In newly built houses, where the walls are damp for a long time in the beginning, the dust lice will thrive. This can cause great irritation to the new homeowners. You can find dust lice in food stuff, especially in starchy food like flour. They are not necessarily in the food, but on the edge or in the packaging. It is not hygienic…

Thrips

…tiny insects known as thrips may occur in enormous numbers and even enter houses. They have a tendency to creep in under clothing, or into ears, mouths and eyes, and they tickle as they move around on the skin. Thrips feed by sucking plant juices, but occasionally they may insert their mouth- parts into human skin, in some cases causing a rash and itching. They can jump by striking the abdomen against the substrate and are therefore sometimes con…