Pine sawyer ( Latin: Monochamus sutor ) This beetle is widely distributed in the conifer forests of northern Europe. The development normally takes one year. The eggs are laid in a depression which the female gnaws in the bark and the 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 thro…
Search Results for: Pine sawyer
Pine weevil
…are possibly 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…
Exit-holes in timber
…mely firmly packed in the tunnel and difficult to scrape out (see p. 139). Pine sawyer exit-holes in timber Pine sawyer The round circular exit-holes have a diameter af 5-8 mm, and normally open out through the bark. Worked timber often shows larval tunnels that the plane has cut through. In cross section, the tunnels are oval, measuring c. 8 x 3 mm. They are therefore similar to those af Criocephalus but contain no wood dust (see p. 139 ). Leptu…
Index
…opilio Pharaoh ant Pholcus phalangoides Phthirus pubis Phymatodes testaceus Pieris brassicae Pigeon bug Pigeon tick Pigeons Pine sawyer Pine weevil Piophila casei…
Butterfly larvae hair
…dispar, which may be very common in a few years. Furthermore, The Eastern Pine Processionary, Thaumetopoea pinivora have stinging hairs. In Denmark, the eastern pine processionary lives in Dueodde on Bornholm. In places where the hairy larvae live, the air can be full of broken, loose stinging hairs. In a few years, a species of the processionaries can be so numerous in oak forests in Southern Europe that people have to be warned against going in…
Criocephalus rusticus
…ires the timber to be damp if it is to thrive. The larvae normally live in pine stumps, but may also attack dead or felled trees, or damp planking at the base of a stack. When the beetles are seen indoors they may have come from pine logs or from timber damaged by damp. In many cases worked timber may show signs of an old attack in the form of larval tunnels exposed by the plane. This would mean that the timber had been damp but had since dried ou…
The Brown wood buck
…own wood buck (Criocephalus rusticus) is a common inhabitant of the Danish pine forests throughout the country. The brown wood buck belongs to the genus with the Latin family name Cerambycidae. Appearance The adult brown wood buck grows between 15 and 25 millimeters long and has a regular, almost matte brown color. The most striking feature of the brown wooden buck is its large feeler horns, which, is a bit reminiscent of goat horns. At the front…
Animals in timber
…h. There are certain structural differences between coniferous trees, e.g. pine or spruce, and deciduous trees, such as oak or beech, and it is often difficult to distinguish these two types on external features. The surest method of distinguishing them is on the presence or absence of true vessels. These are present in deciduous trees, but absent in conifers. These vessels are specially adapted for the transport of water. In some species these ar…
Callidium violaceum
…ered timber, and are common in firewood (only softwoods), and in planks of pine or spruce that still have the bark on. The larvae can thrive in timber until the whole of the layer between bark and wood has been used up, but the attack cannot spread to timber without bark. The best method of stamping out an attack is simply to remove the bark. As in the case of Ernobius mollis (p. 122), this species may also cause damage when panels or roofing are…
Wharf borer Beatle
…exclusively for dead wood. The female most often prefers conifers such as pine, but deciduous trees can also be used for this purpose. Her larvae must live off the wood inside the tree. Therefore, the female has high demands in regard to the quality of the wood. Among other things, it is important that the wood does not dry out while the larvae are inside the wood. And the larvae also seem to thrive best if the tree is affected by a rot fungus an…
Fungus in timber
…gnated but generally speaking this is protected naturally, e.g. in oak and pine. Once the source of the damp has been traced and suitable countermeasures have been taken, it would be advisable to identify the fungus involved. This will usually involve consultation with an expert, al- though in some cases an experienced building craftsman may be able to help. When dry rot has been identified it is essential that all the infected timber is removed a…
Where?
…mark, the harvest mite is mostly seen in Thisted and environs. The Eastern Pine Processionary with its etching hair is known from Dueodde on the island of Bornholm. The medicinal leech lives on Bornholm and in North Zealand. Black flies can form very large populations at the lower reaches of Gudenåens and Susåen. After traveling in southern Europe, bedbugs, house centipedes, scorpions, etc. can be brought home in luggage or camping equipment. Dogs…
House longhorn beetle
…e larvae gnaw further inwards, but no further than to the very core of the pine tree, which they cannot digest. There are many factors that come into play in relation to the larval development process. Under normal circumstances, the development from egg to adult beetle will last between two to five years, but it is also not without precedent that the development can last as long as 10 years. Here, temperature plays an important role first and for…
Index
…The American house dust mite The blue jellyfish The crab louse The Eastern Pine Processionary The European adder The European house dust mite The European viper The Greater weever The lesser weever The pigeon mite The red jellyfish The velvet mite The water scorpion Thrips Thunderblights Thunderbugs Thunderflies Thysanoptera Tick-para1ysis Ticks To feel lousy Tovinger Trachinus draco Trachinus vipera Trichodectes canis Trichomonas vaginalis Trimen…