Betula sp.
Selection criteria. Country: any country. Associated organism: Valsella (distribution map)
Number of records. 5.
Date information. 1936 (May, Sep).
Countries. United Kingdom, Ukraine.
Associated organism. Valsella adhaerens.
Literature. Cannon, Hawksworth & Sherwood-Pike (1985); Merezhko & Smyk (1991) page(s) 76.