…pecies. Small types of parasitic wasps place their eggs in skin beetles or beetle larva or woodboring beetle larva, while others choose to parasitize on aphids. Females from the larger parasitic wasp species, choose to parasitize on wood wasp larvae or butterfly larvae. 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, gar…
Search Results for: Varied carpet beetle
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…
Spider beetle larvae
…Spider beetle larvae behave similar to dermestid beetles, but their pupation tunnels are smaller….
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….
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….
Grain weevil
…out of the pupa and shell, after which it can now come out and find other beetles and of course more food. Like so many other beetles, the grain weevil cannot develop unless it is warm enough for it. On the other hand, higher temperatures can lead to the beetle developing faster. It can take 6-12 months for a grain weevil to fully mature at 12 degrees. At 25 degrees, it takes just 1 month for the beetle to fully mature. Damage Grain weevil are, o…
Pests in food stuff
…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 freezer for…
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
…rope, 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 is not known to live in Europe. None of the above mentioned grain beetles live in the wild in Northern Europe. They require fairly high temperatures in order to develop and they are tolerant to humidity levels as…
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….
Tetropium luridum
…he 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 normally takes a year. The larva can com…
People’s reaction to the bite
…reactions you get after contact with, for example, the hair of the larder beetle larva. However, larder beetle hairs and the like usually leave a dark spot in the centre of the wound and the clear blister can be infected (yellow) after a few days. Location of the bites. Fur mites can penetrate clothes and the biting usually occurs where the first contact with the body is made. These are the places on the body which have had physical contact with…
Index
…ebee Burrows Butterflies Butterfly dust Canine itch mite Canine nasal mite Carpet beetle Carpoglypus lactis Cat fur mite Centipede Centipedes Ceratophyllus gallinae Ceratopogonidae Cercariae Cheyletiella Cheyletiella blakei Cheyletiella parasitovorax Cheyletiella yasguri Cheyletus eruditus Chilopoda Chirodiscoides caviae Chrysops Cimex columbarius Cimex lectularius Cimex pipistrelli Clover mite Coccinella septempunctata Coleoptera Colletes davies…
American Dermestidae
…shares many similarities in appearance with its fellow species – the brown carpet beetle – with its brown body, which is characterized by a light drawing on the front part. Its head and chest, on the other hand, are black. The larvae from the American dermestidae can grow up to 6 millimeters long. They appear “furry” and are brown, whereas the underside of the larva is yellowish. The larval body joint consists of some coarse bristles. In addition,…
Animals in timber
…r coniferous, and its age and condition, may also provide clues. Natural enemies of timber pests It might be thought that animals living the greater part of their lives in timber would be well protected against enemies but this is not always the case. Wood-boring beetle larvae fall prey to many species of parasite and predator, and when an attack by such beetles is thought to have died out on its own, this is very often the work of these natural e…
Furniture beetles
Drugstore beetle Latin: Anobiidae Common furniture beetle on wood with fly holes The larvae of these beetles live mainly in timber. The adults are very small and brownish with an almost cylindrical body. It is typical that the thorax is arched to form a hood which almost conceals the head. The larvae of the different species of furniture beetle are soft, curved, with very small legs, and they are difficult to distinguish from one another. They ar…
Grain weevil
…ollow husk by the time the larva is fully grown. It then pupates inside the husk and about a week later it emerges as a fully developed beetle (see page 93). At 26° C the whole development takes a month. When found in a house in the country this beetle has usually come from the remains of a store of grain, but if this is not the case it will nearly always have originated in a packet of bird seed. Because of its rather specialized requirements this…
Chalcids
…wood wasp larvae to lay egg. The chalcid larva lives as a parasite on the beetle larva and eventually kills it. There are records of up to 95 per cent of the beetle larvae in roof timbers being attacked in this way. When the adult chalcids emerge they often find their way out through the old exit-holes of beetle larvae or they may make their own very small exit-holes. The adult chalcids are attracted by the light and can sometimes be found in lar…
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…
Clytus arietis
…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….
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…
Phymatodes testaceus
…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 an attack by these beetles renders the outer layer of timber unusable….
KEY III, insect larvae
…ith small legs certain beetle larvae (including powder posttles, furniture beetles and spider beetles), Legs completely 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 appe…
Bug Indentification
…y and pupa Booklouse Broad-horned flour beetle, Gnathocerus cornutus Brown carpet beetle Brown house moth and larva Brown rat excrements Brown-banded cockroach Cadelle beetle Cheese fly Cheese mite Cigarette beetle Coffee bean weevil Common bean weevil Common black ant Common earwig Common house fly Confused flour beetle Corn weevil Cricket Dark flour beetle Dermestid beetle Drugstore beetle Female odd beetle Flesh fly Flour mite Flour moth and la…
Ladybugs
…logy and behavior Ladybugs are a kind of beetle. Therefore, like all other beetles, they go through the common beetle stages, egg, larva, and pupa to a beetle. During spring, the adult ladybug lays its eggs close to a food source. This food source is often a colony of aphids. The eggs hatch in just 3-5 days, where the larva will nourish on the aphids over the next few weeks, after which it pupates. The pupa sticks to the surface and is completely…
The granary weevil
…m long. The offspring is red-violet, and it later becomes brownish and old beetles are all black. It cannot fly. Its movements are quite slow and are somewhat similar to crayfish. In the winter cold storages, it is motionless and it becomes active when the temperature rises. The granary weevil does not live out in the open in Northern Europe. The weevils survive in warehouses where newly harvested grain is mixed with old, infested grain. The grana…
Sounds
…ght when the house is at rest. They are made, for instance, by death-watch beetles. The sound is produced by the adult beetle striking its thorax, in rapid succession, against the substrate. Both males and females make use of these sound signals, which probably serve to lead them to one another. Some of the species of booklice that live indoors can produce tapping sounds, and this applies particularly to the winged booklice. Here again both sexes…