…head are two feeler horns or antennas. Certain species – such as the ball woodlouse – can roll into a ball if disturbed. The woodlouse has 7 pairs of legs and can be 1-2cm long. Some species that live by the beach can grow up to 3cm long. Biology and behavior Woodlouse are sensitive to light and prefer to be under rocks, at the bottom of the firewood pile, in compost piles or other similar places where there is often moisture as well. Their hunt…
Search Results for: Blue woodlouse
Woodlice
…e the waterproof, waxy outer cuticle characteristic of an insect, and if a woodlouse wanders into a dry room it will become desiccated within a few hours. Woodlouse These small crustaceans feed mainly on plant matter, but may also gnaw dead animals. Those that are seen in houses and cellars usually belong to the species Oniscus asellus and Porcellio scaber. When large numbers of woodlice are seen indoors it means that the atmosphere is too damp. S…
Ham beetle
…o found on the front of the ham beetle’s cover wings. Finally, we have the blue ham beetle, also called Necrobia violocea. The blue ham beetle has a full-colored, uniform bluish tone, and this beetle is the only one that is apparently not a pest. So, you can guess the danger by looking at the color. All three species of ham beetles can fly when fully grown. The larvae are significantly larger than the fully grown beetle, and they can grow up to 10…
Stinging jellyfish
…turns red. The blue jellyfish, Cyanea lamarckii has a beautiful cornflower blue color. It is about the size of a small saucer. The species is common in the southern part of the North Sea, but are rarely seen in coastal waters. The blue jellyfish’s stinging tentacles are shorter than those of the red jellyfish, but burn just as much. Precautions Avoid getting too close to the stinging jellyfish when bathing in the sea. Usually pain and redness disa…
The black-legged ham beetle
…Latin: Necrobia violacea. Also called the cosmopolitan blue bone beetle. The black-legged ham beetle This species is blue shiny metal coloured. It is especially common in dry carrion, but can also infest the same types of products as the other types of copra beetles….
The premises
…here they go. Regular inspections should of course include searching for mouse and rat holes and droppings. A lamp with ultraviolet light can sometimes detect rodent urine and hair. Fresh urine fluoresce with a blue-white colour, old urine turns yellow. Hair from mice and rats fluoresce with a blue-white colour. Traps containing feed for mice and rats can reveal whether there are rodents on the premises….
Woodlice
…e the waterproof, waxy outer cuticle characteristic of an insect, and if a woodlouse wanders into a dry room it will become desiccated within a few hours. These small crustaceans feed mainly on plant matter, but may also gnaw dead animals. Those that are seen in houses and cellars usually belong to the species Oniscus asellus and Porcellio scaber. When large numbers of woodlice are seen indoors it means that the atmosphere is too damp. Sometimes s…
Woodlice
…woodlouse ( Latin: Order Isopoda) Like slugs, these familiar crustaceans prefer damp conditions. They do not normally feed on paper but if, for example, a pile of damp, mouldy newspapers is left lying on a cellar floor, woodlice will more or less destroy them….
Woodlice
…(Latin: Oniscoidea) Common woodlouse Woodlice are among the animals which often stray indoors. They occasionally try to gnaw timber, but are incapable of doing so with any degree of efficiency unless the wood is completely rotten, and are therefore not important, although unwelcome (see also page 196)….
European pigeon tick bites
…vely the adults and nymphs that bite people. A bite from the large pigeon tick can be quite the experience. The bite is clumsy and can be painful. From the bite wound, a wide, pink, slightly swollen area may appear. Later, color will turn red or reddish-blue. Both the color as well the swelling can stay on the skin for up to three weeks. If bitten several times, people can become unwell and experience nausea, rapid heartbeat, shortness of breath,…
Crab louse bites
…long periods of time. A single day without access to blood will cause them to die of hunger. Crab louse bites and their symptoms are similar to those from the head louse. However, crab louse bites are characterized by blue-colored spots, which may appear where the lice bite. The spots, which are deep in the skin, appear a few hours after the bites. They may be 0.2 to 3 mm in diameter and will stay on the skin for a long time….
Brown dog tick
…ed with blood, they are almost one centimeter long and the body has a gray-blue color, while their hind bodies are swollen. The brown dog tick is equipped with two pairs of mouthparts with effective hooks, which help the tick to adhere to the host animal’s skin. The upper jaws of the tick are shaped like sharp stilettos, while the lower jaws are shaped like a tube, through which the tick sucks up blood. Biology and behavior It is often the dog tha…
The active substances, venom, poison and saliva
…of the European adder contains hemolysin substances (which color the skin blue). The venom of the greater weever contains a substance, which causes the small blood vessels to contract. With ants and in the hair of the Rusty Tussock Moth, formic acid is one of the skin-irritating substances (like with stinging nettles). Saliva. Blood-sucking insects and mites always inject saliva in the wound while sucking blood. Saliva is a complex fluid containi…
Where do the biting and irritating organisms come from?
…inside of the thighs and between the fingers may be due to itch mite. Bites in series or groups, on the stomach or back, under a trouser belt, or under any restriction, are usually flea bites. Bites and itching around the genitals (or in the armpits) are normally due to crab lice. Characteristic blue spots may appear due to discoloration of the skin caused by the crab louse’s salivary secretions. Bites, at night, on thighs or shoulders will often…
Tanbark borer
…east usually has an orange color, while its coverts are characterized by a blue color. However, there are also variants of the tanbark borer, where their front part of the chest is instead brown or black, and where the wings are brown or yellowish. The larvae of the tanbark borer are very similar to the other species in the borer beetle family. They all have a yellowish-white color, just as their bodies are clearly articulated. In addition, all th…
Phymatodes testaceus
…fferent 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 necessarily have come from bark-covered timber the first place to search is the log basket. The e…
The red-breasted copra beetle
…Latin: Necrobia ruficollis. The red-breasted kopra beetle The red-breasted copra beetle is metallic blue with a red chest and red on the front of the wing covers. It is widespread across the world. In this country, it is in particular related to companies working with meat and bone meal….
Life cycle
…ow as the eggs develop in their bodies. Females that are ready to mate are blue-gray and nearly 1 cm long. They then crawl up walls to find suitable egg-laying sites. Life cycle duration depends on factors such as temperature. In particularly hot environments there are a few months between the generations. In cold environments it takes longer. The brown dog tick cannot survive outdoors in the Danish climate. Indoors, it can live for 18 months with…
Violet tanbark beetle
…ult violet tanbark beetle is easy to recognize due to its beautiful violet blue color. In contrast, the larvae are difficult to distinguish from each other, as they appear as pale, chubby, or flat larvae. In the front, the larvae are wider with a strong and dark cheekbone. An adult violet tanbark beetle is equipped with laying tubes at the rear end which is used to lay and place eggs in cracks and crevices. Biology and behavior This insect only la…
The castor bean tick
….5 cm long and looks like a pea, ranging in color from a grayish yellow to blue-gray. In some places in Denmark, the castor bean ticks are very common. In other parts, they are hardly seen. The reason is that they have rather strict requirements to the environment. They do not tolerate dehydration and are therefore mostly found in underwoods and other densely-vegetation locations. The castor bean tick can be seen on reptiles, but it is much more f…
Blowflies
…ies of blowflies normally live in the wild. Inside you can meet the heavy, blue-black blowfly, for example the species Calliphora erythrocephala and the slightly smaller, green-metallic shiny gold flies of the genus Lucilia. Blowflies lay their eggs, the so-called flyblow, in dead animals and other decaying organic materials (excrement, cheese, etc.). The eggs hatch less than a day after they are laid and the larvae bore their way directly into th…
The red-legged ham beetle
…egged kopra beetle The red-legged ham beetle is 4-5 mm long, dark metallic blue with reddish legs. The larvae are up to 10 mm long. They are light grey, but with clear violet drawings on the upper side. In the rear, they have two dark spots. This species is cosmopolitan, probably mainly spread through the trade of copra. Moreover, the larvae develop in many different products: cheese, dried fish, compound feed and various smoked products. They are…
Index
…peognatha Copra beetle Copra beetle, red-breasted Corn weevil Cosmopolitan blue bone beetle Crickets Cricket, house Cryptolestes ferrugineus Cryptolestes minutes Cryptophagus Dark flour beetle Darkling beetles Dermatophagoides farinae Dermatophagoides pteronyssinus Dermestes frischii Dermestes haemorrhoidalis Dermestes lardarius Dermestid beetle Destructor, Glycyphagus Destructor, Lepidoglyphus Destructor, Tribolium Diaperinus, Alphitobius Domesti…
Patchwork leafcutter
…(Latin: Megachile centuncularis) Patchwork leafcutter This bee sometimes builds in the woodwork of houses. Patchwork leafcutter on flower visit in blue cornflower It lines the cells with regular oval pieces of leaf which it cuts from plants with smooth leaves, sometimes roses….
Index
…domestica Tentacles Thaumetopoea pinivora The American house dust mite The blue jellyfish The crab louse The Eastern Pine Processionary The European adder The European house dust mite The European viper The Greater weever The lesser weever The pigeon mite The red jellyfish The velvet mite The water scorpion Thrips Thunderblights Thunderbugs Thunderflies Thysanoptera Tick-para1ysis Ticks To feel lousy Tovinger Trachinus draco Trachinus vipera Trich…