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in Britain.Unlike the sawfly, which feeds on the leaves, the grubs of the picture-wing fly develop in the small berberry fruits. Having seen bushes weighed down with berries in autumn, I've often wondered why the fly has not been more widely seen. A very

it beside its smaller relative: the lesser stag beetle, Dorcus parallelipipedus. Like the 'true' stag beetle, Lucanus cervus, it has grubs that feed in fallen logs, but it reaches adulthood in only one or two years, rather than three to seven. Neither sex

fighting back. The eggs hatch and the ichneumon grubs then eat the insect alive, from the inside. Although they are amongst the most important of biological control agents, they are incredibly poorly studied; the few identification guides are highly