|
Spruce Bark Beetle
Spruce bark beetle is a common name for several insects and may refer to: *'' Dendroctonus micans'', the great spruce bark beetle *''Ips typographus The European spruce bark beetle (''Ips typographus''), is a species of beetle in the weevil subfamily Scolytinae, the bark beetles, and is found from Europe to Asia Minor and some parts of Africa. Biology of the species Morphology Adults are ...'', the European spruce bark beetle See also * Spruce beetle {{Animal common name Insect common names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendroctonus Micans
''Dendroctonus micans'', the great spruce bark beetle, is a species of bark beetle native to the coniferous forests of Europe and Asia. The beetles burrow into the bark of spruce trees and lay eggs which develop into larvae that feed on the woody layers under the bark. Description The eggs of the great spruce bark beetle are smooth, white and translucent, and laid in batches of a hundred or more. The larvae are legless and "C"-shaped, white with darker heads. They are about long when mature. The pupae are white and "mummy-like"; they are exarate, with legs and wings separate from the body. The adults are between long and are cylindrical in shape and dark brown in colour. The limbs and antennae are yellowish-brown, the head is visible when viewed from above, and the elytral declivity, the downward sloping rear end of the elytra, is rounded and smooth. Distribution The great spruce bark beetle occurs in the coniferous forests of Europe and Asia. It is not clear where it ori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ips Typographus
The European spruce bark beetle (''Ips typographus''), is a species of beetle in the weevil subfamily bark beetle, Scolytinae, the bark beetles, and is found from Europe to Anatolia, Asia Minor and some parts of Africa. Biology of the species Morphology Adults are usually long, cylindrical and robust, black or brownish-black. Elytron, Elytral declivity is slightly shiny, with 4 teeth on each margin side. The third tooth is the biggest and club like on its top. The egg is yellowish-white. The larva is white and legless. The pupa is also white. Life cycle and interactions Bark beetles are so named because they reproduce in the inner bark, living and dead phloem tissues, of trees. Adult beetles hibernate in forest litter and host trees when environmental conditions are not favorable for reproduction. When conditions are right, they travel up to half a mile in search of a vulnerable host. Once the host is located, the adult burrows through the weakened Bark (botany), bark in ord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spruce Beetle
''Dendroctonus rufipennis'', the spruce beetle, is a species of bark beetle native to British Columbia, Newfoundland and Labrador, Nova Scotia, Ontario, Quebec, Northern Manitoba, the Yukon, Colorado, Wyoming, Montana, and Maine. They are known to destroy forests of spruce trees including Engelmann, White, Sitka, and Colorado blue spruce. Adults average 4 to 7 mm in length. Life cycle The spruce beetle ''Dendroctonus rufipennis'' Kirby (formerly ''D. obesus'' Mannerheim ( ''D. engelmanni'' Hopk.), about 6 mm long, is one of the larger bark beetles found in spruce (Rose and Lindquist 1985).Rose, A.H.; Lindquist, O.H. 1985. Insects of eastern spruces, fir and, hemlock, revised edition. Gov’t Can., Can. For. Serv., Ottawa, For. Tech. Rep. 23. 159 p. (cited in Coates et al. 1994, cited orig ed 1977) White spruce and Engelmann spruce are the principal hosts (Wygant and Lejeune 1967).Wygant, N.D.; Lejeune, R.R. 1967. Engelmann spruce beetle ''Dendroctonus obesus'' (Mann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
