Search Results for: Male tan bark borer - Phymatodes testaceus

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…

Tanbark borer

…ymatodes testaceus Among some of the most common insects in Denmark 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 col…

Exit-holes in timber

…(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 wood dust is very fine and rat her like talc (see p. 125). Powder post beetle exit-holes in timber Powder post beetles The exit-holes have a diameter of 0-1.5 mm. The larvae most frequently occur in the sapwood of oak, but may also be found in various exotie decidu…

Wharf borer Beatle

…buck, as it has correspondingly long feeler horns. The larva of the wharf borer beetle has a whitish-yellow color and can grow 2 to 3 centimeters long. The larva has characteristics that make it different from many other beetle larvae. It has 3 pairs of well-developed feet at the breast area, just as it has warts on the third and fourth hind body joints. Biology and behavior If you want to see the adult wharf borer beetles, the chance of encounte…

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…

Phymatodes testaceus

(Latin: Phymatodes testaceus) Tanbark beetle (Phymatodes testaceus ), female There are different colour variants of this beetle, some having yellowish elytra, some blue. The life cycle is the same as that of the preceding species with the sole exception that the present species only attacks hardwoods, such as beech, birch and oak. In a house the first sign will normally be the adult beetles, seen crawling around the room, and as they must necessa…

Soft wood boring beetle

…orer beetle is not a rarity in this country, and it likes to settle in dry bark-clad conifers. The soft wood boring beetle – also known by its Latin name Ernobius mollis – differs slightly from other types of borer beetles. This is due to its skin skeleton, which is not as hard as in other of its fellow species. Appearance The fully grown soft wood boring beetle can grow between 3 and 6 millimeters long. It is covered with fine, short hair. These…

Bark beetles

…bark is removed from dead branches or trunks. Some bark beetles keep exclusively to the bark, others work in the layer between the bark and the wood, and each species produces its special pat- tern. True bark beetles are only seen indoors when brought in with timber that still has the bark on, e.g. firewood, and they cannot attack worked timber…

Callidium violaceum

…jaws showing as fine stripes. Calladium violaceum is also known as violet tanbark beetle . Larval development takes one to two years and when they are fully grown the larvae bore obliquely into the timber for a distance of 3-5 cm. At the bottom of this tunnel they make a chamber in which they pupate having sealed it with wood fibres. These pupal tunnels might suggest that the attack has also gone deep, but it is not difficult to test with a screw…

Violet tanbark beetle

…family. It is characterized by its large size. Appearance The adult violet tanbark beetle is easy to recognize due to its beautiful violet blue color. In contrast, the larvae are difficult to distinguish from each other, as they appear as pale, chubby, or flat larvae. In the front, the larvae are wider with a strong and dark cheekbone. An adult violet tanbark beetle is equipped with laying tubes at the rear end which is used to lay and place eggs…

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…

The lesser grain borer

…ives 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 the three outer joints form a thick-toothed comb. In the tropics, it i…

Ernobius mollis

…at right angles to the ordinary larval tunnels (p. 114). Ernobius mollis (bark borer) only attacks coniferous wood with bark edge. This beetle is very common and can be found practically everywhere that timber with the bark still on is used in house construction. The damage done is purely superficial and will not affect the mechanical strength. On the other hand, if such timber is covered with sheets of any kind the emerging beetles will gnaw the…

Index

…ollis Euscorpius italicus Falco tinnunculus False scorpion Fan-bearing wood-borer Fannia canicularis Firebrat Flat grain beetle Fleas faeces Flies, faeces Flour beetle Flour mite scent Flour moth Fly bug Forest flies Forficula auricularia Formicoidea Fungus Fungus beetles Furniture beetles faeces Gamasid mites Garden ant Gas trodes ferrugineus Geophilus carpophagus German cockroach German wasp Gibbium psylloides Glycyphagus domesticus Gnats Goat m…

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….

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….

Sounds

…gnaw its way through the skirting-board, or will have heard it playing hide-and-seek with its mates up in the attic. On account of their size rats tend to make even more noise. They have a very disturbing habit of dragging large objects around at night, which has given rise to stories of poltergeists. The fact that rats are involved is betrayed by the shrieks and squeals which accompany their petty squabbles. Beech martens in a loft also make nois…

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….

Tetropium luridum

…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 complete its development even if the tree is felled and use…

Mating

…just sucked blood. This means that it will also attempt to mate with other males. However, a complete mating with other males is in almost all cases prevented. This is done by a particular fragrance, an alarm pheromone, being released by the harassed male. Like many other insects, bed bugs can communicate by using specific pheromones. The pheromones are released from special scent glands in specific situations, and can trigger a specific behavior…

Animals in timber

…for the growth in thickness of the trunk or branch of a tree, for it forms bark outside and wood inside. A new growth ring is added every year. During the spring, large thin-walled cells are formed which transport water, while later in the summer the cells formed have walls that are thicker, and often darker. While the tree is growing the cells in the outermost annual rings are living and it is here that the transport of liquids from roots to leav…

House cricket

…le. It is only the male cricket that sings and he does so to attract the females. Each male sits in its own little territory and sings, the actual sound being produced by rubbing part of one wing against the other wing. The male also has a short, aggressive piping note, which is heard when another male tries to enter its territory. A love-sick cricket may sing for hours at a time. One industrious zoologist found that a single cricket chirped no le…

Parasitic wasps

…ure of all the species is that the females have a laying brood, and both females and males have a slim waist. The feeler horns are typically very mobile and long. However, the species vary a lot in both size and color. Some are very small and just 1.5-2 mm, while other species are larger 15-20 mm. Color wise, they also vary, some are yellow-brown or metallic, while others are almost completely black, with various types of markings. If you desire t…

Wharfborer

…ut it must not be so rotten as to be falling apart. The fly holes of wharf borer beetles are irregular and oval. They can be confused with the house longhorn, but the wharf borer beetles only grow in moist wood, unlike the house longhorn beetles. When seen in a house this beetle may have come in from outside, having emerged from ships’ timber or wharves, and it also thrives in piling and in structural timber in damp cellars. It is not uncommon for…

Brown dog tick

…on that the larvae have only six legs. The development from larva to adult male or female tick occurs through different stages. The newly hatched larva will first search for a host – preferably a dog. The larva selects protected areas on the dog, such as between the toes or inside of the ears. Here they stay for three to six days, where they suck blood, grow spherical and become light gray. They then leave the dog and seek refuge again, and over t…

Internal

…ation of the female and finally the transfer of seamen takes place. If the male makes the wrong movements in the dance, the female will perceive him as if he were a different species and reject mating. (Manning 1965). Transport systems for nutrients and oxygen are among the organs that are very different from the equivalents in vertebrates. Insect blood does not run in veins, but runs freely around in the body. The heart is built like a vein of mu…

Rats

…n rat is slightly shorter than the body. Male rats are often larger than female rats. A male rat typically weighs between 250 and 300 g, but they can be much larger. The largest captured rat ever found in Denmark was a wild male rat of 545 gram – over 0.5 kg. The excrement of the brown rat (Rattus norvegicus) is usually 2.0 – 2.5 cm long, blunt at one end and shiny black. The house rat, or the black rat, is slightly smaller than the brown rat. The…

Fox

…a triangular face. Like most other mammals, the male is larger than the female. A female fox typically weighs between six and seven kg, while a male fox weighs up to eight kg. Some male foxes can weigh as much as 12 kg. From tail to snout, the fox is about 110 cm long. Biology and behavior Foxes are mainly predators, in the wild they usually hunt animals like, hares, rabbits, deer, birds, and bird eggs. However, they also hunt smaller prey, such…

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…

4. Packaging

…esistant to chewing insects than paper and plastic, but they are not insect-proof. Pests as the lesser grain borer and grain rodents go effortlessly through an aluminium foil. Peculiar findings of insects in foods, such as earwigs in spirit or woodlice in a glass of aspirin, are in many cases due to pests having strayed into the packaging at the storage. It is therefore important to retain the packaging in rooms which can be kept free from invasio…