…that recognisable waist. The only problem is that there are other kinds of wasps like wood wasps, sawflies and many more. If you want to be accurate, you use the name hornet on the social species that belong to the family Vespidae. We have seven species of social, community-forming, hornets in Northern Europe. They are very similar and live the same kind of life. Only the big hornet Vespa crabro, that is twice as large as its relatives, stand out….
Search Results for: Wasp beetle - Clytus arietis
Merchant grain beetle
…( Latin: Oryzaephilus mercator) Very similar in appearance to the preceding species, and difficult to distinguish. The present species is not so commonly seen, and seems to like even higher temperatures. It prefers vegetable foods that contain oil, so it is mainly found in imported nuts, almonds and copra. The Merchant grain beetle penetrates even very tight-fitting packages and unopened walnuts…
Spider beetle larvae
…Spider beetle larvae behave similar to dermestid beetles, but their pupation tunnels are smaller….
House longhorn
…this it gnaws an exit-hole through which it will later leave the tree as a beetle (p. 118). The exit-hole, the wood dust and the chips which the larvae often push out are usually the first visible evidence of an attack by this beetle, although the actual infestation may have taken place several years before. However it is possible to listen for evidence before the attack has got as far as this. By standing quietly in a loft on a warm summer day it…
Ash bark beetle
…(Latin: Hylesinus fraxini) Ash bark beetle This is the scolytid most commonly seen in houses, where it may suddenly appear as a swarm of small, yellow-brown, spotted beetles. These will always have come from ash logs, and the round exit-holes quickly show where they have come from….
Devil’s coach-horse
…mobile – somewhat resembling the abdomen of an earwig. Devil’s coach horse beetle on basement floor When threatened this beetle assumes a posture with the abdomen bent upwards, rather like a scorpion. This is, however, an empty threat for the beetle can neither sting nor bite with its abdomen. What then is the function of this behaviour pattern? It is, indeed, a fact that some people are frightened by it, and it is quite likely that the beetle’s n…
Tribolium destructor
…ll resembling Lysol, which clings to the goods that it infests. Dark flour beetles in oatmeal During its life the female beetle can lay about 1000 eggs, usually in flour or grain, or in foodstuffs such as bread, biscuits, spaghetti or bird seed. In a normally heated kitchen the development from egg to adult beetle takes about 3 months. The adults have an incredible wanderlust and so they may be found far from the kitchen. The beetle itself can liv…
Rust-red flour beetle
…( Latin: Tribolium castaneum) This is very like the preceding species – the flour beetle, but is a little smaller and darker. It has similar habits, but requires even more warmth, and in an unheated warehouse will probably die during the winter in northern Europe….
Flat grain beetle
Flat grain beetle and larva The flat grain beetles preferably eat the germ part of the kernels. (Latin: Cryptolestes ferrugineus) This is a pest found mainly in grain warehouses, but it may also occur in private houses. It is not normally a very serious pest, but if the temperature and humidity are sufficiently high it can do quite a lot of damage, partly because the larvae eat the seed germ and partly because they may occur in very large numbers…
Museum beetles
…, which ends in a small arrowhead-like spike, and is therefore called arrow-hair. If you tease a museum beetle larva it is possible to see how the arrow-hairs, and there is no doubt that they serve as a defensive weapon. If the larva is under attack, it faces the rear end against the attacker, raises the hairs and turn them from side to side. They break easily and when predators get these hairs in the mouth or on the body, it has to clean it off,…
The golden spider beetle
…sts the same types of products as the first two mentioned spider beetles. When occurring in a warehouse it is often because it has been able to eat dead insects, dry carrions or rodent droppings. The adult golden spider beetles do bite holes in woollen textiles. The beetles are shady, nocturnal, and are active in temperatures down to 5 ° C. The development time from egg to adult is one year at 15 ° C, and half a year at 18-20 ° C….
Red-breasted copra beetle
…Red-breasted copra beetle ( Latin: Necrobia ruficollis) This species can be found on dried carrion where it feeds partly on scraps of meat and partly as a predator on the other invertebrates infesting the carrion. It sometimes occurs outdoors in temperate regions, but is mainly seen in factories making meat and bone meal….
Wasps
Latin: Vespoides spp. Hornets – wasps Season for wasps The wasp is a wide category that covers digger wasps, parasitic wasps, hornets etc. Wasps are well known in their black and yellow striped abdomens and no less for their ability to sting. In Northern Europe there are about a dozen species of social wasps, which are very similar to each other both in way of life and appearances. At our latitude wasp colonies are annual. This means that the nes…
Grain weevil
…5-5 millimeters long when fully grown. Since the grain weevil is a type of beetle called a snout beetle, its head has the special, thin “snout”. However, this is not as such a nose or snout, but simply the shape of its head. This snout also looks like a horn. Grain weevil also change color during their lifetime. Like larvae, they are pale and wrinkled, although you rarely see them, as they live inside the center of a grain during the larval stage….
Pests in food stuff
…feed for cats and dogs) Bread beetle Flour mites Merchant grain beetle Saw-grained beetle Rice flour beetle Indianmeal moth Tobacco beetle Pest control in kitchen foods First and fore most it is important to examine all contaminated food stuff and discard them. If an item is simply suspected of being attacked, it can be saved by heating it at 60 degrees for an hour or 80 degrees for a few minutes. In addition, the food stuff can be placed in a fr…
Bed bugs
…the bacon beetle. The larvae are indistinguishable from those of the bacon beetle, but the beetles are distinguished by being black and they lack the bright bands over the elytra. The dermestes haemorrhoidalis is unlike the bacon beetle not an old Danish species, and it has been introduced relatively recently, and is now common especially in properties in cities. Its way of life is similar to that of the bacon beetle. It thrives well in untidy com…
Grain beetles
…long. The saw-toothed grain beetle, the merchant grain beetle and the rust-red grain beetle are primarily of interest. In addition to these, a large number of less known grain beetles exist, which are rare in Europe, which include Cryptolestes minutus (commonly known as the flat grain beetle or the biscuit beetle), Ahasuerus advena and the species Cathartus quadricollis. The latter acts as a grain storage pest in the southern United States, but i…
KEY III, insect larvae
…ely lacking beetle larvae (weevils and bark beetles) Found in timber, sometimes under bark Found in other places Broad in front cerambycid larvae Not broad in front, with spine at rear end wood-boring wasp larvae Small (less that 5 mm long), with hairs flea larvae Normally more than 5 mm long, without hairs, but very variable in appearance fly larvae…
Furniture beetles
…re beetles have a distinctive humpbacked appearance because their heads are bent under an arched prothorax. When there are many beetles with that appearance in food or tobacco, it is almost always furniture beetles or cigarette beetles. If only a single beetle is found, it should be investigated further. This could just be a common furniture beetle that fell into the product from rotten wood….
Museum beetles
…have an attractive matt pattern formed by numerous small, black and reddish-yellow scales. The larvae, which are yellow-brown and hairy, are known as ‘woolly bears’. At the rear end they have a tuft of long hairs, which can be erected when the larva is threatened. The adult beetles are seen especially in the spring. Like the preceding species they often sit on flowers where they feed on the pollen and nectar. Museum beetle larvae can live of dead…
Tetropium luridum
…ns and follows the grain of the wood, the tunnel having a total length of 4-6 cm. Pupa passages from black spruce beetle, Tetropium castaneum var. luridum When fully grown the larva makes a slightly enlarged chamber, which it closes behind it with coarse wood fibres, and then pupates. When the adult beetle emerges it finds its way back along the tunnel, gnawing an exit-hole if there is still bark on the tree, and flies off. The total development n…
Wood wasps
(Latin: Family Siricidae) Wood wasp Great wood wasp Wood wasps only lay 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 w…
Other wasps
…will not sting people, but some species can inflict non-serious stings. Identification, however, is rarely a problem because the sting is clearly felt, so the culprit is identified. A larger species, the orange-red ophionl wasp, is an example of an ichneumon fly, which is attracted to light often strays into houses. It can inflict a painful sting with its short stinger if you accidentally squeeze it….
Index
…g-tailed Silverfish Estimated reading time: 7 minutes Latin: Ctenolepisma… Wasps Wasp or hornet Usually there is no doubt. When we talk about the… Ants Ants have a special position among insects. They are so many of… Rats A single rat can be an intelligent and charming pet. Rats are useful… Bacon beetle The bacon beetle is part of the dermestid beetles. There are about… Pigeons Most of us can agree that a flock of pigeons flying around the church…
The granary weevil
…evils as there were before. The weevils look quite peaceful, but for every beetle, you see, 20-40 larvae are devouring their own cores. A granary weevil infestation begins locally in a so-called “warm pocket”. It is often an external event, which starts this pocket. Water could have entered through a leak. Cereals could have been unable to get rid of the excess water due to dust accumulation. Humidity increases respiration and thus the temperature…
Ladybugs
…y problems. If the harlequin ladybug eats too much of the food that the two-spotted and seven-spotted ladybird should eat, we may risk losing our native ladybug to this more aggressive species. Damage Beside the worries that the presence of the harlequin ladybug may cause in the danish nature, it is also an invasive species. In late summer and autumn, ladybugs seek towards heat, and as humans we heat our homes. Therefore, you may risk that they mo…
Grain weevil
…ole with a secretion that is the same colour as the cereal. She only lays 2-3 eggs a day but she lives a long time, at any rate until she has produced 200-300 eggs. Grain weevils can completely destroy a grain batch Grain weevils prefer wheat, rye and corn, but in default of these they may lay eggs in hard starch-containing products such as dry biscuits and pasta. The small larva has no limbs and cannot leave the grain. As it eats and grows the gr…
The Brown wood buck
…be difficult to scrape out of the wood. Damage Like so many other types of beetles, the brown wood buck prefers to lay its eggs in wood that is moist. This means that it is often damaged wood that is used for the purpose of the beetle. Wood that is still not very used for construction projects and the like. It can be damp firewood or boards that have been lying at the bottom of the pile of wood. Therefore, a visit from the brown wooden buck is rar…
Leptura rubra
Aka: Red-brown Longhorn Beetle Leptura rubra This beetle is easily distinguished by the attractive yellowish-red coloration. The females lay their eggs in damp softwood, often in diseased or dead branches. The larvae live exclusively in the sapwood and their development normally takes two years. When seen indoors this beetle has usually flown in from adjacent woodlands, but it may also emerge from damp posts or planking. Softwood logs which have…
Pine sawyer
…larva eats its way from there into the wood. Metamorphosis into the adult beetle takes place in the following spring in a special pupal chamber close to the surface of the tree, and the beetle gnaws its way out through an almost circular hole. This species is regarded as a very serious pest in Sweden, where it causes damage to softwoods before they reach sawmills. The trees are infested while still growing and the larvae are unable to live for lo…