Skip to Main Content
Location, evolution and importance of Cephalcia spp. (Hym: Pamphiliidae) populations in Polish Carpathian MountainsAuthor(s): Marcin Jachym
Source: In: McManus, Michael L.; Liebhold, Andrew M., eds. Proceedings: Ecology, Survey and Management of Forest Insects; 2002 September 1-5; Krakow, Poland. Gen. Tech. Rep. NE-311. Newtown Square, PA: U.S. Dept. of Agriculture, Forest Service, Northeastern Research Station. 145-146.
Publication Series: Other
Station: Northeastern Research Station
PDF: View PDF (79.63 KB)
DescriptionThe web-spinning sawflies (Cephalcia Panz.) are members of the Symphyta that are of economic significance, and which constitutes an integral part of the spruce forest environment. Spruce, which is the dominant component of Western Carpathian forest stands, is the only known host plant for all the species of Cephalcia. Species in this genus occasionally appear in high densities at which time they become a major threat to coniferous forest stands especially in the mountains. Gradations develop very slowly but may persist for several years. Defoliation by these insects causes a reduction in radial increment and weakens trees so that they are susceptible to attack by secondary organisms and by drought. This may result in extensive tree mortality over large areas. Monolithic spruce forest stands of artificial origin are attacked, as are stands of natural origin in middle and older age classes that are located at altitudes of 800-1200m.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationJachym, Marcin. 2003. Location, evolution and importance of Cephalcia spp. (Hym: Pamphiliidae) populations in Polish Carpathian Mountains. In: McManus, Michael L.; Liebhold, Andrew M., eds. Proceedings: Ecology, Survey and Management of Forest Insects; 2002 September 1-5; Krakow, Poland. Gen. Tech. Rep. NE-311. Newtown Square, PA: U.S. Dept. of Agriculture, Forest Service, Northeastern Research Station. 145-146.
- Spruce beetle-induced changes to Engelmann spruce foliage flammability
- Response of the engraver beetle, Ipsperturbatus, to semiochemicals in white spruce stands of interior Alaska.
- Tree mortality after synchronized forest insect outbreaks: effects of tree species, bole diameter, and cutting history
XML: View XML