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POPULUS. Poplars and Aspens. [Salicaceae]

Ten species of Populus are recorded in Britain. These include the native Black-poplar (P. nigra), White Poplar (P. alba) and Aspen (P. tremula) and the introduced American Aspen (P. tremuloides), Eastern Balsam-poplar (P. balsamifera) and Western Balsam-poplar (P. trichocarpa). Four dipterous miners, the agromyzids Agromyza albitarsis, Aulagromyza populi, Aulagromyza populicola and Aulagromyza tremulae, are recorded on Populus in Britain. The agromyzid Hexomyza schineri is recorded in Britain and elesewhere forming twig galls on Populus. The agromyzid Phytobia cambii feeds in the cambium of Salix and Populus in Britain and also Alnus, Betula and Carpinus elsewhere. Elsewhere the agromyzids Agromyza albitarsis, Aulagromyza populi, Aulagromyza populicola and Aulagromyza tremulae are recorded mining Populus. Twenty-two non-dipterous miners are recorded on Populus in Britain (see below).

Key for the identification of the known Diptera mines in Britain.

1> Blotch mine. 2. -> Linear mine. 3. 2> Larva forming a greenish-black blotch mine, which quickly turns brown, frequently several larvae feed together. Puparium yellowish to reddish brown Mine of Agromyza albitarsis on Populus alba. Image: Willem Ellis (Source: Nederlandse bladmineerders) Agromyza albitarsis Meigen [Agromyzidae]. -> A shallow, greenish upper surface blotch-mine, which can be somewhat elongate but never obviously linear. Puparium dark brown Mine of Aulagromyza populicola on Populus nigra. Image: Willem Ellis (Source: Nederlandse bladmineerders) Aulagromyza populicola (Haliday) [Agromyzidae]. 3> A long winding, whitish linear mine, initially lower surface, later upper surface. Pupation takes place within the leaf, in a distinct pupal blister, the anterior spiracles projecting through the epidermis. Puparium dark brown Mine of Aulagromyza populi on Populus nigra. Images: Willem Ellis (Source: Nederlandse bladmineerders) Aulagromyza populi (Kaltenbach) [Agromyzidae]. -> A short, broad, irregular linear mine, exclusively in the spongy parenchyma, on underside of leaf. Pupation external. Puparium yellowish Mine of Aulagromyza tremulae on Populus tremulae. Image: Willem Ellis (Source: Nederlandse bladmineerders) Aulagromyza tremulae (Hering) [Agromyzidae].

Non-dipterous miners recorded on Populus in Britain Caloptilia stigmatella (Fabricius, 1781) Lepidoptera: Gracillariidae Ectoedemia argyropeza (Zeller, 1839) Lepidoptera: Nepticulidae Ectoedemia hannoverella (Glitz, 1872) Lepidoptera: Nepticulidae     Ectoedemia turbidella (Zeller, 1848) Lepidoptera: Nepticulidae   Fenusella glaucopis (Konow, 1907) Hymenoptera: Tenthredinidae     Fenusella hortulana (Klug, 1818) Hymenoptera: Tenthredinidae   Gypsonoma dealbana (Frölich, 1828) Lepidoptera: Tortricidae   Heterarthrus ochropoda (Klug, 1818) Hymenoptera: Tenthredinidae   Isochnus sequensi (Stierlin, 1894) Coleoptera: Curculionidae     Leucoptera sinuella (Reutti, 1853) Lepidoptera: Lyonetiidae     Phyllocnistis unipunctella (Stephens, 1834) Lepidoptera: Gracillariidae Phyllocnistis xenia M. Hering, 1936 Lepidoptera: Gracillariidae   Phyllonorycter comparella (Duponchel, 1843) Lepidoptera: Gracillariidae   Phyllonorycter sagitella (Bjerkander, 1790) Lepidoptera: Gracillariidae   Phyllonorycter salicicolella (Sircom, 1848) Lepidoptera: Gracillariidae Phyllonorycter salictella (Zeller, 1846) Lepidoptera: Gracillariidae Stigmella assimilella (Zeller, 1848) Lepidoptera: Nepticulidae   Stigmella trimaculella (Haworth, 1828) Lepidoptera: Nepticulidae Zeugophora flavicollis (Marsham, 1802) Coleoptera: Curculionidae     Zeugophora subspinosa (Fabricius, 1781) Coleoptera: Curculionidae     Zeugophora turneri Power, 1863 Coleoptera: Curculionidae

Last updated 21-Mar-2008  Brian Pitkin

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