Search Results for: Wasp beetle - Clytus arietis

The common bean weevil

…bean weevil. Latin: Acantoscelides obtectus. This is a 2 – 4 mm long, oval beetle, which is brown on the top side with yellowish green hair and light gray stripes. The common bean weevil is a tropical species based in South America. It comes to Europe with imported goods and since it can complete its development at temperatures as low as 16-17 ° C, it can be very harmful in the summer months and in heated storages. At optimal temperatures which ar…

The coffee bean weevil

…evils and their larvae will not survive the coffee bean roasting, and the damage done by these weevils should probably rather be considered from an economic perspective (weight loss during storage) than from hygienic-culinary beliefs. The coffee bean weevil is actually not a bean weevil, but belongs to a family that stands near the true weevils. Therefore, it is not subject to the restrictions relating to bean beetles….

Skin beetles

…s and animals. Some of the skin beetle larvae belong to the carrion fauna. They first appear in carrion when maggots and others have eaten most of the meat. Skin beetles eat cartilage and dry meat leftovers. Some skin beetles can also digest hair and feathers….

The reesa vespulae

…countries. The beetles are between 2 and 5 mm long. The front third of the beetle is black, while the rest is brown, with a light drawing on the front of the elytrons. The larvae are up to 6 mm long. They are hairy and brown. The hind has a long brush of golden hair. The reesa vespulae larvae are practically omnivorous. Reesa vespulae, adult and larva. In North America, where it is found in nature, it lives in bee hives and wasps’ nests. It feeds…

Plaster beetles

…oints are developed as small clubs. Plaster beetles are quite small, only 2-3 mm long. Both beetles and larvae primarily live of mould and mildew. They are common in basements and storage rooms. In moist grain, straw and damp feed there can be found impressive amounts of plaster beetles. Moreover, they occur in all kinds of food that has gone damp and mouldy. Lathridius minutus, one of the most common mould beetles, can be quite abundant in mouldy…

Scent

…flour or grain impart a sweet, sickly smell to these foodstuffs, while the beetle Tribolium destructor produces a substance with a smell like Lysol, and this will be particularly noticeable when infested goods have been kept in tight-fitting containers. Cockroaches have a characteristic sweet smell, but there has to be several of them before this is apparent, and normally they will already have revealed their presence in some other way. Most bugs…

Spider beetles

…Spider beetle Latin: Family Ptinidae As mentioned on p. 75 these beetles attack a little of everything and they do not go out of their way to gnaw textiles. Their gnawing activities can normally be recognized by the small, regular, round holes and the absence of silk….

Precautions against infestations by pests of textiles

…nob. Aerosols are, of course, more expensive to use and are not really suit- able for the treatment of furniture. Upholstered furniture should be sprayed until the covers are quite damp, and this may require, for example, at least half a litre for a sofa. Large objects which are difficult to treat at home can be sent for gas treatment, but this may be expensive, depending upon the distance to be travelled. Such treatment should involve the use of…

Insect appearance

…ous looks depending on the individual species. Some are crested, other club-shaped or brush-shaped. Cockroaches and crickets have elegant, whip-shaped antennae. The mouth is surrounded by several pairs of mouthparts which are actually a kind of remade limbs. They can also have quite different characteristics depending on the various insect groups. The majority of food pests have mandibles, which are external mouthparts that are used to crush food….

Animals in paper, leather and plastics

…ds of fungus, and this makes it a good food source for animals such as wood-lice, earwigs and certain moth larvae. Various dermestid beetle larvae feed on raw hides, but freshly tanned leather is a very poor source of nutriment. Here, as with paper, damp leather which goes mouldy becomes more attractive as a food. To an increasing extent artificial materials such as nylon and other plastics are replacing natural products in everyday life. Many of…

Woodworm

…nto the tree. The larvae are typically white and curved, and they measure 5-6 mm. Within 2-3 years, the larvae will be fully-grown, but in some cases, it can take up to 8 years. The ideal temperature for their development is around 22 degrees, if the temperature is above 28 degrees, they are not able to survive for long. The larvae do thrive at lower temperatures, but this also slows their development. In time they will create drilling dust, which…

Lymexylon navale

…Latin: Lymexylon navale Lymexylon navale This beetle infests old oaks in the forest and oak beams in timber yards. It has, on occasion, done considerable damage in shipyards, and is especially famous from Linnaeus’ account of its depredations in the naval dockyard at Gothenburg in 1747….

E: The carrion niche

…can go into wounds. 2. Pests in dry carrion: Skin beetles (not the khapra beetle) copra beetles, spider beetles and various moth larvae play a major role in the final digestion of animal tissue. Other pests can participate in the feast as animal protein is an attractive food, even for pests that would otherwise be vegetarians. Milled products of animal origin (meat meal, bone meal, dried blood, dried milk, egg powder, cheese powder etc.) also get…

Pine weevil

…ve in tree stumps and in the roots of diseased or dead conifers. The adult beetles may cause some damage outdoors because they gnaw shoots and twigs, but indoors they are quite harmless. The beetles occur particularly in new timber houses, and they are possibly attracted by the scents given off during the first few years. Pine weevil (left) can be confused with the Black vine weevil. Both have stains off yellow hair on the wings. The snout of the…

Some insects are unhealthy to eat

…le. Bowel disorder can be the result of eating food that contains moth and beetle larvae, beetles and mites. This symptom is primarily the natural reaction to the stiff hair that covers the insects. Secondarily the symptoms can be the result of an allergic reaction. Some beetles such as dark and confused flour beetles give off toxins, quinones, which have mutagenic qualities, according to mouse studies. Cockroaches also give off carcinogens. With…