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HUMULUS. Hop. [Cannabiaceae]

Two species of Humulus are recorded in Britain. These include the native Hop (H. lupulus) and the introduced Japanese Hop (H. japonica). Two dipterous miners, the agromyzids Agromyza flaviceps and Agromyza igniceps, are recorded on H. lupulus in Britain. Elsewhere the agromyzids Agromyza flaviceps, Agromyza flaviceps, Agromyza reptans, Chromatomyia horticola, Liromyza strigata and tentatively Agromyza pseudoreptans are recorded mining Humulus. One non-dipterous leaf-miner is recorded on Humulus in Britain See below).  .

Hop - Humulus lupulus

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

1> Larva forming a long, irregular linear mine, conspicuously widening at end but not developing into a blotch; frass in diffused central green band; older mines appear whitish with little evidence of frass. Puparium reddish-brown Mine of Agromyza flaviceps on Humulus lupulus. Image: Willem Ellis (Source: Nederlandse bladmineerders) Agromyza flaviceps Fallén [Agromyzidae]. -> A linear leaf-mine, widening irregularly; frass in two conspicuous black strips. Mine of Agromyza igniceps on Humulus lupulus. Image: Willem Ellis (Source: Nederlandse bladmineerders) Agromyza igniceps Hendel [Agromyzidae].

Non-dipterous miners recorded on Humulus in Britain Cosmopterix zieglerella (Hübner, 1810) Lepidoptera: Cosmopterigidae

Last updated 05-Aug-2008  Brian Pitkin

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