Orchestes calceatus (Germar, 1821)
on Betula
mines, with cocoons, of Orchestes testaceus on Alnus, (at left) and of O. calceatus on Betula (right) (from Viramo, 1970a).
parasite
Apart from the host plant, the mines of O. calceatus seem indistinguishable from those of O. testaceus.
host plants
Betulaceae, monophagous
Betula nana, pendula, pubescens.
Mainly op B. pubescens.
distribution within Europe
notes
O. calceatus can be divided in a western European subspecies O. c. semirufus and the typical subscies calceatus in northern and eastern Europe (Viramo, 1970a).
references
Benedikt, Borovec, Fremuth ao (2010a), Delbol (2013a), Heijerman (1993a), Hering (927b), Košťál & Caldara (2013a), Morris (1993a), Rheinheimer & Hassler (2010a), Robbins (1991a), Scherf (1964a), Viramo (1962a, 1970a), Wolf & Fuchs (2014a).