…feeds on dried goods, which is why it likes to attack foods such as dried beans, dried peas, lentils, and soybeans. It is also among these foods that the female lays her eggs. The female can lay up to 85 eggs. When the larvae hatch from the eggs, they go out into the world for food. This means that they gnaw their way into beans or peas, for instance. Here they go through their next three larval stages, which eventually results in the larvae pupa…
Search Results for: Bean weevil
The common bean weevil
Bean weevil Fig. 5.46 Beans destroyed by the 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 hea…
The coffee bean weevil
Coffee bean weevil Fig. 5.47. Coffee bean weevil, adult, larva and pupa. Latin: Araeocerus fasciculatus. This small, dark brown beetle is known primarily from stocks of unroasted coffee beans. It is common in tropical and subtropical coastal countries, and can also be seen in corn, cocoa, nutmeg and the seeds of leguminous plants. It requires food that is not too dry. The water content must be equal to 65% RH and preferably a little more than tha…
Index
…icularia, Forficula Australian spider beetle Bacon beetle Bean moth, cocoo Bean weevil, common Bean weevil Bees Bisquit beetle Black ant, common Black rat Black-legged ham beetle Blowflies Bolting cloth bettle Bostrychidae Booklice Brown house moth Brown rat Brown-banded cockroach Bruchidae Bruchus Butterflies Cadelle Calandra Calliphora erythrocephala Callosobruchus Canicularis, Fannia Carnaria, Sarcophaga Carpoglyphus lactis Cartodere Casei, Pio…
Rice weevil
…ce wise, the rice weevil is like the grain snout beetle. However, the rice weevil is smaller. A rice weevil is in average 2.5 to 3.5 mm long so there is not talk of a very large beetle. It may also look like a corn snout beetle, as the two species, at first glance appears almost identical. A rice weevil has four red spots on the coverts. The hind and front body are more even in size than with other beetle species, which tend to have a larger hind…
Grain weevil
…nown pests when it comes to grain stocks, although one can also find grain weevils in the home. Grain weevil can enter your home via grain such as oats, barley, and wheat. However, one can also find them in dog biscuits, bird seeds, pasta, and other grain items. Grain weevil do not live outdoors in Denmark, so they will prefer to stay close to the food they know they can live on. In the summer, however, they can hike far from their safe areas, as…
(7) The rice weevil and the granary weevil
…ach the temperate zones. At our latitude, both of these granivorous insects are synanthrope. The rice weevil requires more heat than the granary weevil to develop and it is not as likely to survive cold winters. In Northern Europe almost all grain stores are infested with granary weevils. Rice weevils are only seen after particularly hot summers. Based on the British statistics, we can expect that both species separately are imported by about 1% o…
Common bean weevil
…ready to emerge they only have to break through the circular ‘windows’ to be free (see p. 93). Brown beans infested by bean weevils…
The granary weevil
…nerations. For each new generation there will be at least 15 times as many weevils 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…
The rice weevil
…ce weevil is on average slightly smaller and moves faster than the granary weevil. The rice weevil, unlike the granary weevil, flies, and in its natural habitats, in warm countries, it infests grain while it matures in the fields. In Northern Europe, however, it is most common in imported cereals, mainly rice. In terms of biology and harmfulness rice- and granary weevils are very similar, but the rice weevils’ multiplication rate is twice as high…
Pine weevil
…ossibly 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 pine weevil is much longer. This species may easily be confused with the black vine-weevil (p. 203). Both are about the same size and have patches of yellow hairs on the elytra, but the snout is considerably larger in H. abietis. The Pine weevil is occas…
The castor bean tick
…y to climb onto a host with the front pair of legs. (Gjelstrup) The castor bean tick The castor bean tick, Ixodes ricinus, is just one of about thirty kinds of ticks that are found in Denmark. However, it is almost exclusively this species of ticks that is found on humans. An adult male tick is approx. 2 mm long. The female is twice as long. Ticks engorge when they suck blood. The abdomen’s reddish-brown, leathery skin can expand quite a lot. A bl…
The corn weevil
…consider the two species to be one….
Rice weevil
…(Latin: Sitophilus oryzae) This beetle is a little smaller than the grain weevil, and can be recognized by the four reddish spots on the elytra, which cover a pair of functional wings. Rice gnawed by rice weevil This is one of the most serious pests of cereal crops in the tropics and subtropics. It is often brought to northern Europe and is not uncommonly found in kitchen cupboards, usually in a packet of rice (see page 93). As in the grain weevi…
The castor bean tick bite
…antibiotics are given to the patient. If you have been bitten by a castor bean tick and have alarming symptoms which the doctor cannot (with certainty) link to any common diseases, it is important to mention that you were bitten by a castor bean tick, in order for the spirochete infection to come into consideration. Tick paralysis. In the tick saliva there is a neurotoxin with curare-like effects. In some cases, it is released it in such large qu…
Bean weevils
…are found in the genera Bruchus, Acantoscelides and Callosobruchus. The most common of these weevils in Europe is the bean weevil….
Index
…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 Copeognatha Corvus monedula Corynetes coeruleus Cossus cossus Crab louse Cranefly larvae Crataerina pallida Criocephalus rusticus Cryptolestesferrugineus Ctenocephalidesfelis Ctenocephal…
Castor bean tick
Castor bean tick ( Latin: Ixodes ricinus) The adult male is 2 mm long, the female twice this .length, but these measurements only apply to individuals which have not recently fed. The red-brown, leathery skin of the abdomen can stretch to an incredible extent. This species is very common in some areas, but not in others. This is because it requires special environmental conditions. It is, for instance, sensitive to desiccation and is therefore fo…
Nutmeg or coffee weevil
…Coffee weevil aka. nutmeg weevil This beetle lacks the well-developed snout of the curculionid weevils. It is widespread in tropical and subtropical regions and is often brought to Europe in goods. It is now found quite commonly in Britain, mainly as a pest in cocoa beans, nutmegs and coffee beans. It has on occasions caused serious trouble to coffee exporters in south-east Asia. It requires warmth and a high humidity, so in temperate regions it w…
Black vine-weevil
…Latin: Otiorrhynchus sulcatus) Black vine weevil This is one of the larger weevils. It moves around in a characteristic slow manner, and like all weevils it is vegetarian. The larvae live in the soil and feed on the underground parts of plants. The adults avoid the light and hide themselves during the day, often in the surface soil at the base of a plant, but they emerge at night to feed. They attack many different kinds of plant and may cause con…
Grain weevil
…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 grain becomes a hollow husk by the time the larva is fully grown. It then pupates inside the husk…
True weevils snout beetles
…but this is often irrelevant, because they do not thrive in mature dry seeds in a warehouse. Among the many weevils only three species are able to breed in stored foods: the granary weevil, the rice weevil and the corn weevil. They belong to the genus Sitophilus, but are often described under their old name: Calandra….
Tick removal
…l size). As evidenced, there are valid reasons why contact with the castor bean tick should be avoided. If you are bitten by the castor bean tick, be sure to remove it quickly. There are special tick pesticides that ease removal of ticks. A gentle spray of the ticks with an insect spray containing pyrethrin I and II + piperonyl butoxide have the same effect. Shampoos containing the same substances can be used if a human or a pet is infested by man…
Ticks
…ae, as nymphs and as adults). The pigeon tick needs a total of five blood meals. The risk of not being able to find the next host is quite large. Ticks get by laying many eggs and by being able to live a long time without food. Three kinds of ticks can be especially troublesome: The castor bean tick, which is an outdoor species and brown dog tick and the pigeon tick which are two indoor species with dogs and pigeons as the main hosts, respectively…
B: The seed niche
…(peas, beans, lentils etc.) are infested mainly by the specialist species, bean weevils, which in warmer countries lay their eggs in the seeds while the plants are still growing. Imported seeds containing these weevils may be massively damaged during storage. Insects in similar products, such as coffee bean weevils can infest leguminous plants too. Bean flour and pea flour are somewhat toxic to flour moths. 3. Pests of nut kernels and dried fruits…
The active substances, venom, poison and saliva
…gents with very different effects. The saliva of some bloodsuckers (caster bean tick, medicinal leech, etc.) contains local anesthetics that can make an otherwise clumsy bite painless. In the saliva of all bloodsuckers, there are agents that can prevent blood from coagulating. Digestive enzymes are a characteristic component of saliva. The greatest amounts of these enzymes are injected into humans when bitten by animals which partly digest its pre…
Suspected brown dog tick infestation
…. Silhouettes are in natural size. Ticks on a dog are almost always caster bean ticks that just need to be removed. Caster bean ticks lose the ability to find a host when the temperature drops below 7 °C. If the dog has ticks when it is significantly colder outside, it may be brown dog ticks. High levels of infestation in the house and ticks (especially blood-filled, gray females) on walls and ceilings may be brown dog ticks. Ticks that are found…
Where?
…dges, horse flies, bees, hornets, ants, hedgehog fleas, bird fleas, caster bean tick, harvest mites, stinging jellyfish, leeches, greater weevers and the European adder. Of course, the line that separates the two groups in this division of the animals is quite thin. The outdoor species may stray into houses or they can be brought inside. Mosquitoes bite people inside the house while other animals, such as horse flies, do not bite while indoor. Fro…
Symptoms
…nimals mentioned in this book, dust mites and storage mites are known for causing these symptoms but there are many other options. The blood-sucking animals can infect humans with bacteria, viruses, fungal spores and unicellular animals. From what we know so far, the caster bean tick is the only transmitter of infectious agents in Denmark. In the other Scandinavian countries mosquitoes are suspected of passing summer flu virus, etc. on to humans….
Frequency
…ugs 0 1 0 0 Swift louse fly 0 1 0 0 0 0 Castor bean tick 0 1 0 Mosquitoes 1 0 Biting midges 1 0 0 Stenepteryx hirundinis 0 0 1 0 European adder (Lat. Vipera berus) 0 0 1 0 Honey bee 0 1 0 Bumblebee 0 1 0 Horse-flies 1 0 Hornets 0 1 0 0 0 Cat fleas 0 1 …