Latin: Clytus Arietis At first glance, the wasp beetle may look a little scary. After all, it does its best to look like a wasp, but in short, the wasp beetle is totally harmless. The wasp beetle is one of many animals that mimic other, more dangerous animals with its appearance, as this can give it protection from predators and other dangers. When one animal develops to resemble another animal or develops to be able to hide in its surroundings,…
Search Results for: Wasp beetle - Clytus arietis
Index
…s Rattus norvegicus Rattus rattus Rat, black Rat, brown Red-breasted copra beetle Red-legged ham beetle Reesa vespulae Rhyzopertha dominica Rice weevil Rock dove, European Ruficollis, Necrobia Rufipes, Necrobia Rust-red flour beetle Rust-red grain beetle Saccharina, Lepisma Sarcophaga, carnaria Saw-toothed grain beetle Serricorne, Lasioderma Silverfish Siro, Acarus Sitophilus granarius Sitophilus oryzae Sitophilus zeamais Skin beetles Skipper, che…
Destructive flour beetle
…but in Denmark, at least in comparison with other pests. Destructive flour beetle beetles were first found in Denmark in 1943, but they have since appeared more often. The Destructive flour beetle most likely came to Denmark from the tropics in Africa in connection with trade of goods between the two places. Anyhow it has also occurred in other countries that have traded with this part of the world. In Danish, the Destructive flour beetle is named…
Brown carpet beetle
…e can grow up to 8 millimeters long. Biology and behavior The brown carpet beetle is a beetle in the subfamily (Attageninae), which all share the same common feature. They live on the dry remains of plants and animals and are not unwilling to consume all that is left by other animals. The brown carpet beetle originates from Africa, where the temperature is somewhat different than in Denmark. This affects the beetle. It thrives best at temperatures…
House longhorn beetle
…tles in roof constructions and other timber. Appearance The house longhorn beetle is a beetle that can grow 10-20 millimeters long. The beetle comes in several color variations that change from the light brown to the completely black. One of the most characteristic features of the house longhorn beetle is its woolly, whitish hair on both the back and fore chest, which forms two oblique whitish spots. On the chest it also has two shiny knots. The h…
Australian spider beetle
…ir own whitish cocoon in which they pupate. The cocoon has an almost tissue-paper-like appearance, and the webs of the larva can be seen as thin threads and spun cocoons in the infested area. The development from larva to fully adult thief beetle lasts about 3 to 4 months if the larva has good conditions e.g., at room temperature. When the larvae are fully developed, they most often leave this safe area. This means that they sometimes have to clim…
Deathwatch beetle
…place the wood with treated wood, such as pressure-impregnated timber. However, it is also possible to treat the wood with a wood preservative that protects the wood from both insect and fungal attacks. In hard-to-reach areas, it can be an advantage to treat with an insect powder that is distributed on the areas where the beetle moves. It will kill the beetles before they have time to lay their eggs….
History of the dark flour beetle
…boratory’s estimates came from the originally infected oatmeal. Dark flour beetle larva The dark flour beetle is now a common food pest in Denmark, Norway, Finland and Sweden, but is virtually unknown in most other countries. In Canada, Germany and the former Soviet Union, it is occasionally found in houses and storages, but regarded as a rare and relatively harmless species. British researchers suggest that the relatively high indoor temperatures…
Tobacco beetle
…ow as Anobiidae. The size of the tobacco beetle is around 2-3 mm and a full-grown beetle can measure up to 4 mm. Therefore, we are talking about a very small beetle, that is difficult to spot. The tobacco beetle has a light brown color at the front and shield as well as long light brown hairs that are most evident on its legs. Its head is hidden under the neck shield. Biology and behavior The tobacco beetle thrives in a tropical or subtropical env…
Ham beetle
…n also easily see the difference between the three kinds. Overall, the ham beetle is 4-6 millimeters long when fully developed. Like other insects, the ham beetle has six legs. Ham beetles have long hind bodies, while they are shorter in front. You can see the difference between the three different species in Denmark in their color. The first is a red-legged ham beetle, also called Necrobia rufipes. The red-legged ham beetle naturally has red legs…
Soft wood boring beetle
…ns. Under the bark, the larval passages will stand out clearly as approx. 1-millimeter-deep grooves, forming a large pattern in the wood. However, the grooves may be deeper than that. Just before the larva pupates, it gnaws even further into the tree. The larva digs approx. 1 centimeter down into the wood to achieve a more protected position in the tree. Within one to two years, the soft wood boring beetle is fully developed, and it is getting rea…
(6) The cigarette beetle and the drugstore beetle
…ntries the drugstore beetle is at least 5 times as common as the cigarette beetle. The cigarette beetle requires a minimum temperature of 22 °C to survive. The drugstore beetle needs only 17 °C and it has the ability to withstand lower winter temperatures than the cigarette 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…
Fur beetle
…ecognize, size wise they are up to 1 cm long. One can take the ordinary fur- or carpet beetle larvae as a brown carpet beetle larva, as they are related. The easiest way to distinguish in between them, is by the location where they are found. If the larva is found indoors, it is most likely the brown carpet beetle larva. A common carpet beetle larva is typically found outdoors. Biology and behavior During the summer, one can find the fur beetle ne…
Bread beetle
…ld. The bread beetle larvae grow up to about 5 millimeters long. They are c-shaped, are white-yellow in color, and in addition are equipped with rather small legs. Biology and behavior The life cycle of an adult bread beetle is not exceptionally long and lasts only up to 2 months. During this time, a female bread beetle can lay about 100 eggs. It takes between 1 to 2 weeks before the small larvae hatch from the eggs. The newly hatched larvae are e…
Merchant grain beetle
…nt merchant grain beetles in private homes. To prevent both merchant grain beetle and other beetles from trying to eat one’s food, one should make sure that all the foods that the beetles will go for, are properly packaged in air-tight concealers. In addition, you can minimize the risk by keeping the merchant grain beetles favorite foods (nuts, almonds, dried fruit, seeds, and the like) cool. If you live in an apartment and experience that the mer…
Exit-holes in timber
…are cylindrical (see p. 123). Death watch beetle exit-holes in timber Death-watch beetle The exit-holes have a diameter ol 3-5 mm. The larvae occur almost exclusively in oak damaged by damp, both in the sapwood and the heartwood. The faeces are large and lens-shaped (see p. 125). Fan bearing wood borer exit-holes in timber Fan-bearing wood-borer The exit-holes have a diameter of 0-1.5 mm. The larvae are found in the sapwood on deciduous trees. The…
Saw-toothed grain beetle
…serrated strips. The wings are fully developed, yet one never sees the saw-toothed grain beetle fly. The larvae are also small, they are only three to four mm long. The head of the larvae is dark, while the rest of the body is yellowish white. The beetle is often mistaken as the merchant grain beetle, as their appearance is similar. Biology and behavior In general, the saw-toothed lifetime is 6-10 month. They can however be up to three years old,…
Index
…x lectularius Cimex pipistrelli Ciniflo fenestralis Cis boleti Cluster fly Clytus arietis Coccinellaseptempunctata Cockroaches faeces scent Cocoa moth Codiosoma spadix Coffee weevil Coleoptera Collembola , Colletes daviesanus Columba livia domestica Common bean weevil Common clothes moth faeces Common cockroach Common flower bug Common furniture beetle Common gnat Common house mite Common house spider Common wasp Cone bug Coniophora cerebella Cope…
(4) The rust-red flour beetle and the confused flour beetle
…he abrupt transition between the third and fourth antenna links of the rust-red flour beetle. The confused flour beetle has a smooth transition between the antenna links. The biology of the two species exhibits only small differences, but the differences are still significant enough to determine that one of the two species is successful while the other performs poorly in our climate. According to British statistics, the rust-red flour beetle is th…
Rape blossom beetle
…peseed fields – especially in spring rapeseed. Appearance The rape blossom beetle is a small gloss beetle of just two millimeters. Its color is dark with a metallic shine that is usually greenish. Biology and behavior When the temperatures are warm, you can experience the rape blossom beetle flying around in even very large numbers. Like many other insects, the beetle is attracted to yellow colors. If you are wearing yellow clothes, it is therefor…
Flour beetle
…t other beetles, the flour beetle larva is larger than a fully grown flour beetle. A flour beetle is just 2.5-4 mm long. It has a reddish-brown color and a very long hind body. Like most other beetles, it has six legs and, of course, antennas on its head. If you are not sure of the species, it can be recognized by its lively behavior. Since the flour beetle is an insect, it has a larval stage. The flour beetle larvae are somewhat larger than an ad…
Clytus arietis
…le Clytus arietis With its eye-catching drawing and restless behavior, the wasp beetle corresponds well to its name. The larvae of this beetle live in dead, dry deciduous wood. They do not attack timber indoors, but may be introduced with logs, and when the adult beetles are flying in mid-summer, they sometimes come in through doors and windows. They attract attention because of the striking colour pattern, which is somewhat reminiscent of a wasp….
(5) The merchant grain beetle and the saw-toothed grain beetle
Merchant grain beetle Saw-toothed grain beetle Both species are found in 4-5% of ships arriving from abroad to British ports. 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. Normall…
Bacon beetle
…many of the foods we store correspond to dry carrion in the eyes of these beetles. The adult bacon beetle (Dermestes lardarius) is 7-9 mm long and easily recognised by the bright band with dark dots that goes across the front of its elytra. The female lays hundreds of eggs, preferably directly in cracks and crevices in food. The larvae grow within 2-3 months, at room temperature, for a length of up to 15 mm. They are clearly articulated with long…
The Borer snout beetle
…borer snout beetle has a dark color that changes from dark brown to a black-brown shade. The adult beetle measures between 3 to 4 millimeters. The larvae, on the other hand, are pale and have a curved shape, just as they are quite boneless. Biology and behavior The borer snout beetle has its very own preferences when it comes to choosing wood. The female lays her own eggs exclusively in wood that is affected by rot or that is otherwise moist. Howe…
Common woodboring beetles
…nce it is a very commend type of pest in Denmark. A fully grown woodboring beetle is 3-5 mm long and the color is brown. The cover wings are characterized by visible dot stripes that makes it recognizable. Biology and behavior The woodboring beetle is a common guest in woodwork, dead trees, wooden posts, timber, and the like. The beetle is only seen during the warm summer months in June to august. In the end of June to the beginning of July they a…
Woodboring beetle
…o the wood boring beetle family – more precisely Anobiidae. Appearance The beetle is 5-6 mm long and the color is black with strips on the cover wings. In addition, the beetles have a couple of spots of yellow silky hairs on the back corners of the chest. If you are in doubt of the species of a specific beetle, these yellow spots will be characteristic for the Hadrobregmus pertinax. Its head is hidden under the neck shield. The larva is c-shaped a…
Skin beetle
…d the female lays approx. 180 eggs distributed over the entire period. The beetles are not rod-bound to a specific area. They are, on the other hand, highly active and are willingly walking or flying far from their original home. A Dermestes haemorrhoidalis that has hatched in the wild can therefore easily search in through a window in a house. Damage A Dermestes haemorrhoidalis can be quite practical when it is out in nature. If, on the other han…
The lesser mealworm beetle
…s disease,” but it is uncertain whether it is relevant under practical conditions. The lesser mealworm beetle acts as a food pest in connection with the slaughter of chickens. Prior to the slaughter, the chickens are without food for a short period of time. This means that they eat a lot of beetles and beetle larvae. Some of them are probably still alive when the chickens are slaughtered. They make their way out and may end up in the parts of the…
Bark beetle
…r traces that make the bark beetle an annoying pest in the forest. The many-bark beetle can often ruin not only the value of the wood, but also its uses. Therefore, the infested wood cannot be used in places where water infiltration is a risk factor. The bark beetles are preferably a nuisance outdoors and fortunately cannot do great damage indoors. They can neither damage the woodwork in the house nor in any other way constitute a damage in our ho…
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