Search Results for: Lacewing/feed/Common house mite

Pale mottled willow

…hat the “roof worm” lives on grass and hay and is therefore brought to the house with these materials for the roof. The “roof worm” therefore often appears when you are in the process of laying a new thatched roof. Because of their way of life, they are also often found on attic on which you keep hay. The larva lives in and around the thatched roof or on the attic during the warmer months, after which they appear in the house during the colder mon…

If the European pigeon ticks are not controlled

…roblem once and for all. If this detail is forgotten and the place is into houses, the ticks will wander around until they get hungry. Most will die in the process. The few that are spotted in living areas are probably so weakened that they cannot figure out how to bite. This is especially applies to pigeon ticks that spotted in broad daylight, because the ticks are typical nocturnal pests who seek out their hosts at night. The ticks that appear s…

DPIL

…books written by Henri Mourier and Thorkil Hallas. The book “Pests in the house and home” was originally called “Wild animals in the house and home” and was published in several languages around Europe. Thus, this particular book is available in danish, Swedish, Norwegian, German, French, Dutch, Spanish and of course in English. The books “Pests in food” and “Bed bugs – Stings and itching” are published in Danish, English, Norwegian, Swedish an…

Drone fly larva

…rcase. There are also numerous references to this phenomenon in Greek and Roman literature. The myth continued right up to modern times and the final explanation, namely that it referred to hoverflies, not bees, did not come until the 1880s. The rat tail larvae that find their way into the house are quite harmless, and the best thing is just to take them out again. If they continue to appear and start to become a nuisance, it would be a good idea…

Phymatodes testaceus

…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 necessarily have come from bark-covered timber the first place to search is the log basket. The exit- holes are oval (p. 118). This beetle is in no way a menace in the house, but if hardwood is being kept for carpentry work it is always advisable to remove the bark, as a…

Wood wasps

…eggs in trees that still have their bark, so they are unlikely to enter a house, except in timber already infested. It would, in fact, be possible to buy furniture containing these larvae. There is no risk of these insects spreading in the house, and it is very unlikely that they will be present in such numbers as to weaken the furniture. However, they may well cause damage when they emerge as adults. They can, for example, gnaw through floor boa…

Control

…ssible infection from fur mites that have fallen from the animal. However, it is not necessary to carry out a thorough and troublesome flea control program. It is sufficient to treat the animal’s sleeping places and favorite relaxation spots. Cleaning the house is a good idea, however, you should only vacuum the house – do no soap and water. In humans Concentrate on treating the infected animals. It is not necessary to treat people. Once the treat…

Prevention of damage by pests in kitchens and food factories

…ry effective in keeping occasional flying insects out of food factories or houses. In cases where the doors have to remain open owing to the volume of traffic it is possible to install a kind of air vent, the opening having a continuous stream of air through which the insects cannot fly. It will always be easier to keep insects and mites out of food factories if a belt (about 2 metres broad) around the building is kept free of vegetation. If it sh…

Insect development

…flies flying around, are not the offspring of bigger flies. Fig. 3.5. The common house fly has complete metamorphosis in which the eggs become larvae. The larvae grow large and become pupae, in which metamorphosis into the adult insect takes place. Insect development and metamorphosis are controlled by hormones. The hormones are formed in special glands on the lower side of the brain and in the prothorax. The hormones are distributed with the blo…

Insect senses

…nguish between different colours. For example, experiments have shown that house flies prefer dark red and black colours, and that fact is used in several types of fly traps. We also know that the sensitivity of insect eyes is staggered compared to the frequency range that we see. Most insects do not react to long wave light, which is red to the human eye. However, most insect eyes perceive the short-wave ultraviolet light that we do not see. Many…

Cockroaches

…rach In Europe the Oriental cockroach (Blatta orientalis) is not nearly as common as the German. It is larger, grows up to 2.5 cm long and is shining black. the females have small elytra, while the elytra of the males almost cover the entire abdomen. Its way of life is largely as the German cockroach, but it requires higher temperatures to thrive. An important difference is that the female is not carrying the egg capsule around, but places it in t…

Rodents

…while gnawing. The shape and size of holes from teeth in food can reveal what kind of animal that has been eating the food. In adult mice, the total width of the front teeth is approximately 1.5 mm and in rats approximately 3 mm. The house mouse and the yellow-necked mouse are often found indoors. Other species of mice can go indoors, but do not thrive there for long. Of our two rat species, the brown rat is the most common, while the black rat s…

Parasitic wasps

…e. Damage There are no parasitic wasp species that can damage furniture or houses. In fact, a variety of the species are used for biological pest control on farms, in plantations, gardens and greenhouses. Some species can sting with the laying brood, but this rarely happens. If this happens, it is usually because you accidentally squeeze them. Prevention and control If many parasitic wasps occur in the home, it is usually because there is somethin…

The yellow-necked mouse

…ure white, except for a brown band (collar) in front of the front legs. It is larger than the house mouse, head and body measuring 10-12 cm, and the tail is slightly longer than the rest of the animal. It is primarily associated with forests, but is also common in gardens with many trees and shrubs. Most of the year they stay out in the open, and the ones that invade houses do it towards the end of October. The yellow-necked mice continue to seek…

Earwig

…for food: They become sexually mature during the course of the summer. The common earwig is almost omnivorous, eating dead vegetable matter, live plants and carrion, and also catching small insects and mites. Earwigs may cause damage in gardens and nurseries for they gnaw plants. On the other hand, they destroy many other plant pests, such as aphids. Many people find earwigs repulsive, and one would need to delve into their subconscious to underst…

Woodwasps

…, it is important knowing the difference between this wasp species and the common wasp, as the wood wasp does not attack humans and at the same time can neither sting nor bite. And they are not equipped with a sting at the hind body. Wood wasps typically occur during the summer months, and they are especially active on hot sunny days. The females search for conifers in connection with laying eggs, where they drill the laying sting into the trunk i…

Earwig

Chlorophorus annularis

…nghorn Chlorophorus annularis This is a beetle from south-east Asia, which feeds mainly on bamboo, and it may be a very serious pest where this is used for building houses. Bamboo stick from an importer’s furniture – with traces of bamboo longhorn larvae. Occasionally bamboo imported into Europe may contain the larvae. In dry bamboo the larval development takes several years so it may be a long time after the purchase of bamboo furniture before th…

Red-brown longhorn beetle

…ghtly colors, the red-brown longhorn beetle can damage the woodwork of the house. If you find the insect in your home, it is important to react quickly as well as establish preventions. Appearance The red-brown longhorn beetle is 12-18 mm long and is characterized by the reddish brown or red colored cover wings. Color wise there are all kinds of variants. However, they have yellowish hair, which is characteristic for this species. In general, the…

Prevention of attacks by timber pests

…d by the same methods as are used in preventing fungal growths. Gassing of house longhorns being prepared For many timber pests only thrive in damp wood, which also provides the right habitat for fungi. Normally it would not be an economic proposition to try to prevent all attacks by insects. In certain circumstances, of course, such as the replacement of timber in a building already infected, it would be worth impregnating the new timber under pr…

Animals that bite, sting and irritate

Aedes mosquito – pushing its proboscis into arm Parasitism is very common in the animal kingdom. It has been estimated that about a quarter of the existing animal species live in or on the remaining three-quarters. The words bite and sting are often used indiscriminately, but it is best to say that an animal bites when it uses its mouth, even when this is modified to form a sucking proboscis, and that it stings with a special organ, the sting, wh…

Suspected delusional parasitosis

…Cleaning mania. Often, treatment with insecticides as well as cleaning the house is wildly exaggerated. These are powerful things that are used on furniture and skin: lye, kerosene, alcohol, ammonia, chlorine, etc. and poison is dusted and sprayed. If there is a dog or cat, it gets its share and if these are the ones to fall under suspicion, it is not unusual that the patient have them put down by the vet. Women over 45. It is mainly in middle-age…

Unease about small animals

…hese show that more than 80% found it uncomfortable to have insects in the house, even if they are completely harmless such as the silverfish, and that 1 in 20 people were outright afraid of small animals. Furthermore, the survey indicated that the unease is most common among women and that the tolerance is raised depending on level of education. The latter is encouraging because it shows that the more you know about the animals, the more tolerant…

Small housefly

…nia Canicularis Next after the housefly, called Musca domestica, the small housefly is the most common in Danish homes. The small housefly is often seen flying around in circles around lamps. In the wild, they also fly like that, but around tree crowns. Small houseflies have a bouncy way of moving around, which can be annoying, but this means that the small housefly is hard to kill with a slap. Likewise, the small housefly is known for buzzing, li…

Dermestes haemorrhoidalis

…f gnawing their way into all kinds of materials. This is a recent addition to the European fauna, but it appears to have become quite common, particularly in large towns. The adult beetles fly very well and so an odd one may appear in any house. In general, they can do no damage in a normal household, but they may multiply if the remains of food and other kitchen waste are left lying around for months. In many cases the beetles come from a pigeon’…

4. Packaging

…not very common in Northern Europe. Gnawings on packagings are due to more common pests that have eaten their way from the inside out. Moth larvae will often gnaw their way out of the package in which they lived before they pupate. Newly hatched drugstore beetles can chew through the packaging through small circular holes. Bacon beetles and other beetles of the genus Dermestes likes to chip away in cardboard or other semi-soft materials, such as w…

Bedbugs – Bites, Stings and Itches

…acists, nurses, health visitors, veterinarians, biologists, teachers, etc. Common to most, however, is that awareness of harmful and nuisance animals are only a small part of their professional skills. This has created a need for this little handbook. We hope that pet owners and others who desire information about the annoying little pests may benefit from reading this book. Dr. Med. Marianne Kieffer, special registrar at the Rigshospitalet Hospit…

Laboratory methods for detection of pests in food

…n the bottom. The Berlese extraction method is especially good for finding mites, but when it comes to finding mites in grain, sieving is also an option. There is indeed a lot of dust, but in return you get faster results. Despite the long time is takes, the Berlese method is popular in quantitative analyses. The pests are collected, and the procedure for the analysis is of a few minutes duration. The Berlese extraction method allows more pests to…

(5) The merchant grain beetle and the saw-toothed grain beetle

…ts. They can live of the same foods, but the merchant grain beetle is most common in products with high contents of oil and fat, while the saw-toothed grain beetle is most common in cereals. The merchant grain beetle requires slightly higher temperatures than the saw-toothed grain beetle and it is not as cold tolerant. Normally the saw-toothed grain beetle is found in unheated grain storages. In heated rooms, such as kitchens, the two species are…

Furniture beetles

…cies that have adapted to living in food. The drugstore beetle is the more common of the two, while the cigarette beetle is rare outside actual tobacco stocks. Like all furniture beetles the larvae live in burrows, which they gnaw and the result is rotten goods. Small round holes in the packaging can be found in places, where the beetles have gnawed their way out. Furniture beetles have a distinctive humpbacked appearance because their heads are b…

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