Search Results for: Lesser grain borer

Grain weevil

…o grain stocks and similar stocks. If so-called “hot pockets” occur in the grain, grain weevils will be attracted to the area. A hot pocket is an area of the grain that gets wet and hot from outside factors. In bad situations, the hot pocket can reach up to 50 degrees, which will lead to a core in the pocket, which consists of dead grain weevil larvae and fungal hyphae. In private, you typically only notice a grain weevil attack when you see the…

Saw-toothed grain beetle

…e. Damage Sawtoothed grain beetles are often found in the company of other grain pests in grain storage. It is not very likely that the saw-toothed grain beetle will gnaw hole in grains that have not already been damage, but they do mainly eat the germ. The saw-toothed grain beetle can be found in all kinds of dried plant products. They prefer grain, bread and flour, but they can also be found in chocolate, almonds, and dried fruit. In fact, it is…

Merchant grain beetle

…a dark head. The larva becomes about 3 to 4 millimeters long. The merchant grain beetle is sometimes confused with the sawtoothed grain beetle, as the two species are closely related. However, there are easy ways to tell the difference between the two, for instance by keeping an eye on the behavior of the specific beetle. Merchant grain beetles can fly, as they have well-developed wings, and the sawtoothed grain beetle cannot. Biology and behavior…

Lesser grain borer

…Lesser grain borer (Latin: Rhizopertha dominica) This species belongs to the family Bostrychidae, a group of tropical beetles which includes several wood-boring species (p. 128). It can be a very serious pest of stored rice and grain in warm regions (see p. 93). Lesser grain borer in corn…

(5) The merchant grain beetle and the saw-toothed grain beetle

…eals. The merchant grain beetle requires slightly higher temperatures than the saw-toothed grain beetle and it is not as cold tolerant. Normally the saw-toothed grain beetle is found in unheated grain storages. In heated rooms, such as kitchens, the two species are equally frequent. In the Danish grain storages the saw-toothed grain beetle is particularly attached to warm areas that eventually occur around local granary weevil infestations. During…

Tanbark borer

…is the tanbark borer with the Latin name Phymatodes testaceus. The tanbark borer belongs to the genus of wooden borer. The members of this genus have long, curved feeler horns reminiscent of goat horn. Appearance When the tanbark borer is fully grown, it is between 10 and 15 millimeters long. Its breast usually has an orange color, while its coverts are characterized by a blue color. However, there are also variants of the tanbark borer, where the…

Wharf borer Beatle

…idespread in similar places throughout the temperate zone, where the wharf borer beetle is spread through shipping. The wharf borer beetle is thought to have originated in the United States, where it lives in areas around the Great Lakes. Appearance An adult wharf borer beetle measures between 1 to 1.5 centimeters in length. The color of the beetle itself is a reddish-golden color, while its coverts are black. The legs are black on the inside and…

The Borer snout beetle

…ll as conifers. The small larvae usually take a year to develop into adult borer snout beetles, and the borer snout beetle can hatch all year round. When the adult beetles are ready to leave the tree, it does so through small fly holes that have a diameter of 1 to 2 millimeters. These fly holes are oval and have a slightly irregular outline. They leave passages with borer flour, which is a fine and dusting material that consists, among other thing…

The lesser grain borer

The lesser grain borer Fig. 5.41. Lesser grain borer with larva that lives inside the kernel. Latin: Rhyzopertha dominica. 2 – 3 mm long, reddish-brown to black-brown beetle. The prothorax is large and rounded in front like a hood, which on the top and in the front is covered with small lumps. The lumps help when the beetle drills. Head with mouth parts is on the underside of the prothorax and is not seen from the back. Feelers are 10-jointed and…

Index

…at Grain beetle, merchant Grain beetle, saw-toothed Grain beetle, rust-red Grain borer, lesser Granarium, Trogoderma Granarius, Sitophilus Granary weevil Grey flesh fly Haemorrhoidalis, Dermestes Ham beetle, black-legged Ham beetle, red-legged Hofmannophila pseudopretella Hololeucus, Niptus House cricket House fly House fly, lesser House moth, brown House dust mites House mite, common House mouse House sparrow Hymen optera Imaginary pests Indian m…

The saw-toothed grain beetle

The saw-toothed grain beetle Season for merchant grain beetle and saw-toothed grain beetle Latin: Oryzaephilus surinamensis. 2.5 – 3.5 mm long, slender and brown-black. The distinctive features are the serrated growths on the prothorax side edges just behind the head. It cannot infest whole, undamaged kernels and it mainly eats seeds. In goods of cereal origin, flour and grain in particular, it is one of our most common pests. Eggs are laid loose…

Grain beetles

…small beetles, 2 – 3.5 mm 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 sout…

The merchant grain beetle

…ds, it is as common as the saw-toothed grain beetle, but it is not seen in grain stocks. The merchant grain beetle prefers nuts without shells or with damaged shells. It can also live on dried fruit, flour and grain. It does not develop as fast as the saw-toothed grain beetle; there is a 20-fold increase in the population in one month at optimal temperatures. The merchant grain beetle requires slightly higher temperatures than the saw-toothed grai…

Grain weevil

…ntil 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 grain becomes a hollow husk by the time the larva is fully grown. It then pupates inside the husk and about a week later it emerges…

The lesser mealworm beetle

…robably still alive when the chickens are slaughtered. They make their way out and may end up in the parts of the chickens that are sent to consumers. There is no harm in eating a lesser mealworm beetle. The lesser mealworm beetle is very sensitive to cold. One day at – 1 ° C will kill all stages of this beetle….

The lesser house fly

Latin: Fannia canicularis. Lesser house fly Lesser house fly, adult and larva The lesser house fly is the typical house fly. It is 5 -7 mm. The males of this species can be seen in a tireless bouncing dance around lamps or other things hanging down from the ceiling. The lesser house fly lays its eggs one by one in very moist, decaying substances, for example, in moist manure or sink drains. The larvae do not look like ordinary fly larvae. They ar…

An old problem

…pecies, granary weevils, confused flour beetles, drugstore beetles, lesser grain borers, saw-toothed grain beetles, spider beetles and cigarette beetles. Our ancestors might have acted casually having beetles in their food, but they too had to take precautionary measures to ensure their own share of the food. In ancient Egypt and the Roman Empire, storage methods which prevented both fungus and pests were used. Grain was put into pits in the groun…

The rust-red grain beetle

…The sides of the head and the prothorax are lined with one plain line. In grain storages it occurs in the same manner as the saw-toothed grain beetle, namely as a secondary pest associated with a weevil infestation. It requires a quite high temperature, 23 ° C, to be able to reproduce, and it is not as common as the saw-toothed grain beetle. Its reproduction capability is slightly higher, up to 60 times the original number within one month when t…

The lesser mealworm beetle

4. Packaging

…an bite into the goods through containers of paper or plastic – the lesser grain borer, the cigarette beetle and the bolting cloth beetle – that are pests that are not very common in Northern Europe. Gnawings on packagings are due to more common pests that have eaten their way from the inside out. Moth larvae will often gnaw their way out of the package in which they lived before they pupate. Newly hatched drugstore beetles can chew through the pa…

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…

B: The seed niche

…called secondary grain pests typically include species such as saw-toothed grain beetles, rust-red grain beetles, mealworm beetles, dark flour beetles and rice weevils as well as the larvae of brown house moths, Mediterranean flour moths and certain other moths. To them, flour, grains, baked goods and kernel damaged by granary weevils are just variations on the theme “damaged seeds.” The natural niches of these secondary grain pests are probably b…

Saw-toothed grain beetle

…o have become quite common in private houses in Europe. In the Saw-toothed grain beetle (left) the piece behind the eye is as far as the eye, in the Merchant grain beetle it is short and pointed. These beetles can live for 3 years, and during the course of her life the female may lay about 400 eggs. They like a high temperature and development is most rapid at 32° C, taking only 25 days from egg-laying to the emergence of the adult beetle from the…

Index

…r Lepidoptera Lepinotus inquilinus Lepisma saccharina Leptura rubra Lesser grain borer Lesser housefly Lice, faeces Little owl Longhorn beetles Limaxfiavus Limax maximus Limnothrips cerealium Linognathus setosus Liposcelis divinatorius I Lithobius forficatus Lucilia sericata Lyctidae Lyctocoris campestris Lvctus brunneus Lyctus linearis Lymexylon navale Malaria mosquito M allophaga Martesfoina Martin bug Mason bee Mealworm beetle M egachile centun…

Stock mites

…ou can try a slightly less accurate, but still cheaper and faster method. By sifting a handful of the grains, dust will sprinkle down. This dust can then be examined for storage mites. Once storage mites have been detected in one’s grain, dry the grain, making sure that the water content will be lowered to around 13.5-14% or lower. The water content in rapeseed should be 7.5%. Prevention is done by keeping one’s stock dry, to prevent fungal growth…

The granary weevil

…can be one of the causes of respiratory allergies to people who work with grain. The weevils cannot reproduce in grain stored at temperatures below 13 – 14 ° C, if there are no local warm pockets. Fig. 5.42. Granary weevil. Larva and pupa, which are rarely seen as they live inside kernels, and adult beetle. Extermination is best done with phosphoresced hydrogen gas when dealing with large quantities of grain. In small batches and in households, p…

Rice weevil

…rwards the hole is covered so that the egg is completely hidden inside the grain. The larva then eats the grain until it is ready to come out of the grain shell. Damage The rise weevil only damage is eating the food, which you off cause do not want them to. Both larvae and adult beetles are problematic when found in flour or grains as they multiply rapidly. It is important that you rapidly deal with the situation if you suspect or find signs of ri…

Lesser housefly

Lesser housefly and larva ( Latin: Fannia canicularis) The fly is ready to mate as early as 24 hours after it has left the pupae sheath. The female fly mates only once in its life, then it rejects all approaches from the mating eager male flies. This is the fly, common in houses, which circles ceaselessly round lamps and candles. The female lays eggs in very damp rotting material, such as wet manure, at the outflow of the kitchen sink and similar…

Fan-bearing wood-borer

…Fan-bearing wood-borer ( Latin: Ptilinus pectinicornis ) This species, which is not as common as the other wood-boring beetles, mainly infests deciduous trees, e.g. beech, birch, oak. It is easily recognizable by the large, comb-like antennae. Unlike the other wood-borers here the adult beetle also gnaws timber. The wood dust is very fine and similar to that produced by the powder post beetles….

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…