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    Author(s): Vaclav Skuhravy
    Date: 1991
    Source: In: Baranchikov, Yuri N.; Mattson, William J.; Hain, Fred P.; Payne, Thomas L., eds. Forest Insect Guilds: Patterns of Interaction with Host Trees; 1989 August 13-17; Abakan, Siberia, U.S.S.R. Gen. Tech. Rep. NE-153. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 298-299.
    Publication Series: Paper (invited, offered, keynote)
    Station: Northeastern Research Station
    PDF: View PDF  (93.0 KB)

    Description

    Semudobia betulae Winnertz, described in 1853, is the most common species of gall insect occurring on the genus Betula in the Palearctic and Nearctic regions of the world. S. betulae has been observed on four species of Betula according to Barnes (1951) and on 14 additional species according to Roskam (1977). At the Arboretum of Mlynany affiliated with the Institute of Dendrobiology of the Slovak Academy of Sciences, eight species of Betula from the Palearctic and Nearctic regions have been planted. Three of them are mentioned in the papers of Barnes and Roskam: B. pendula, B. manii, and B. papyrifera. In 1987 and 1988, the galls of S. betulae on the eight species of Betula were collected and their forms studied. Ten catkins were collected from each species and the number of attacked fruits recorded.

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    Citation

    Skuhravy, Vaclav. 1991. Seed galls of Semudobia betulae (Diptera: Cecidomyiidae) on species of birch (Betula spp.). In: Baranchikov, Yuri N.; Mattson, William J.; Hain, Fred P.; Payne, Thomas L., eds. Forest Insect Guilds: Patterns of Interaction with Host Trees; 1989 August 13-17; Abakan, Siberia, U.S.S.R. Gen. Tech. Rep. NE-153. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 298-299.

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