? Bark beetles
Adult mountain pine beetle Dendroctonus ponderosae
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Subphylum: Hexapoda Class: Insecta Order: Coleoptera Family: Curculionidae Subfamily: Scolytinae Latreille, 1807
Genera
See text.

A Dog beetle is one of approximately 220 genera with 6,000 species of beetles in the subfamily Scolytinae in the weevil family Curculionidae (traditionally the bark beetles were placed in their own family Scolytidae). Image File history File links Dendroctonus ponderosae - USDA Forest Service photo [1] File links The following pages link to this file: Bark beetle Mountain pine beetle ... Binomial name Dendroctonus ponderosae Hopkins, 1905 The mountain pine beetle, Dendroctonus ponderosae, is a species of bark beetle native to the forests of western North America. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Phyla Subregnum Parazoa Porifera (sponges) Subregnum Agnotozoa Placozoa (trichoplax) Orthonectida (orthonectids) Rhombozoa (dicyemids) Subregnum Eumetazoa Radiata (unranked) (radial symmetry) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Bilateria (unranked) (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - trilobites (extinct) Subphylum Chelicerata Arachnida - spiders,scorpions, etc. ... Classes & Orders Class Insecta (insects) Unplaced orders:    Order Diplura    Order Collembola (springtails)    Order Protura The subphylum Hexapoda constitutes the largest (in terms of number of species) grouping of arthropods and includes the insects as well as a few much smaller groups of wingless arthropods closely related to insects: Collembola, Protura... Classes & Orders See taxonomy Insects are invertebrate animals of the Class Insecta, the largest and (on land) most widely-distributed taxon within the phylum Arthropoda. ... Suborders Adephaga Archostemata Myxophaga Polyphaga See subgroups of the order Coleoptera Beetles are one of the most diverse groups of insects. ... Subgroups See Subgroups of Curculionidae. ... Pierre André Latreille. ... For other uses, see Beetle (disambiguation). ... Families Nemonychidae Anthribidae Belidae Attelabidae Brentidae Caridae Ithyceridae Curculionidae A weevil is a beetle from the Curculionoidea superfamily. ... Subgroups See Subgroups of Curculionidae. ...

They are known for their ability to bore into the cambium layer of trees to lay eggs and reproduce. Some species, such as the mountain pine beetle (Dendroctonus ponderosae), attack and kill live trees. Most however, live in dead or dying hosts. Bark beetles are ecologically and economically significant. Even outbreak species can help to renew the forest by killing old trees. Other species aid in the decomposition of dead wood. Vascular cambium is a tissue found in the stems of perennial dicots. ... The coniferous Coast Redwood, the tallest tree species on earth. ... Binomial name Dendroctonus ponderosae Hopkins, 1905 The mountain pine beetle, Dendroctonus ponderosae, is a species of bark beetle native to the forests of western North America. ...

Mountain pine beetles killed these Lodgepole Pine trees in Prince George, British Columbia.

Bark beetles often attack trees that are already weakened by disease, drought, smog, and physical damage. Healthy trees may put up defenses by producing resin or latex, which may contain a number of insecticidal and fungicidal compounds that can kill or injure attacking insects, or simply immobilize and suffocate them with the sticky fluid. Under outbreak conditions, the sheer number of beetles can however overwhelm the tree's defences. Download high resolution version (1200x900, 603 KB) Wikipedia does not have an article with this exact name. ... Download high resolution version (1200x900, 603 KB) Wikipedia does not have an article with this exact name. ... Binomial name Dendroctonus ponderosae Hopkins, 1905 The mountain pine beetle, Dendroctonus ponderosae, is a species of bark beetle native to the forests of western North America. ... Binomial name Pinus contorta Douglas Lodgepole Pine (Pinus contorta) is a common tree in western North America. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A disease is an abnormal condition of the body or mind that causes discomfort, dysfunction, or distress to the person afflicted or those in contact with the person. ... A drought or an extreme dry periodic climate is an extended period where water availability falls below the statistical requirements for a region. ... Victorian London was notorious for its thick smogs, or pea-soupers, a fact that is often recreated to add an air of mystery to a period costume drama. ... Insect trapped in resin. ... LATEX, written as LaTeX in plain text, is a document preparation system for the TeX typesetting program. ...

Some bark beetles form a symbiotic relationship with fungi, and thus are named "Ambrosia beetles" after the fungus. The ambrosia beetles (such as Trypodendron spp.) feed on fungal "gardens" and are one of only three insect groups known to farm fungi. The other two groups are ants (Hymenoptera: Formiciade) and termites (Isoptera). Ambrosia bark beetles are thus able to indirectly feed from many more species of trees than their evolutionary relatives that do not feed on fungi, by having the fungi do the dirty work of surpassing the plant's defenses.

Beetles will emit pheromones to attract other beetles, which are drawn to target trees and may result in heavy infestation and eventually death of the tree. Many are also atracted to ethanol, one of the by-products of decaying trees. Fanning honeybee exposes Nasonov gland (white-at tip of abdomen) releasing pheromone to entice swarm into an empty hive A pheromone is any chemical produced by a living organism that transmits a message to other members of the same species. ...