Phytobia cambii (Hendel, 193)

on woody plants

gall

several decimeters long, slender, winding gallery in the cambium of a somewhat older branch. Univoltine; the larvae emerge in August and pupate in the soil. Old galleries become completely filled with callus tissue. In a cross section of a branch the traces of the galleries are recognisable as brown spots, widened in the direction of the perimeter of the annual rings.

host plants

Betulaceae, Salicaceae, narrowly polyphagous

Alnus; Betula; Carpinus; Corylus; Populus x canadensis, carolinensis, nigra, tremula, trichocarpa; Salix alba, caprea, eriocephala, x fragilis, purpurea, triandra, viminalis.

The occurrence on Betulaceae is a moot point. According to some authors this concerns a separate species, viz. Ph. betulae that is accepted by some as a valid species.

synonyms

Dizygomyza cambii Hendel, 1931; Dendromyza betulae Kangas, 1935; Phytobia betulae (Kangas, 1935); Phytobia betulae (Kangas, 1935).

inquilines

Resseliella dizygomyzae.

references

Bland (1994c), Černý (2001c), Černý, Andrade, Gonçalves & von Tschirnhaus (2018a), Černý, Vála & Barták (2001a), Dempewolf (2001a), de Meijere (1939a), Moraal (1987a,b), Pakalniškis (1998a), Papp (2009a), Papp & Černý (2016a), Robbins (1991a), Scheirs, De Bruyn & von Tschirnhaus (1999a), Spencer (1971a,b, 1972a, 1973b, 1976a), Skuhravá & Roques (2000a), von Tschirnhaus (1999a, 2000a), Zlobin (2008a).

mod 2.iii.2019