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The Society for the study of flies (Diptera)

Affiliated to the British Entomological and Natural History Society (BENHS)

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#1 2019-05-13 11:42:21

Richard Dickson
DF Members
Name: Richard Dickson
Registered: 2008-11-24
Posts: 322

An abundance of Dorycera graminum

I was invited to a BioBlitz on a Southampton open space on Saturday (11.v.19). Peartree Green is a public open space close to the estuary of the Itchen, on which apparently little habitat management takes place. Dog walkers abound, and so does the inevitable product. There is a calcareous end and a dry heathy end, and a lot of scrub, brambles and gorse.
In an open basic/neutral oasis of rough grass with ox-eye daisy I swept (with minimal effort) 20+ Dorycera. There were a couple of nearby flowering hawthorn. This habitat is congruous with my others for this species.  On the way back to base I swept a couple more from an area of bramble and nettles. Later I was sent a photo for identification of a fly on sunlit foliage from the heathy end - another one!
I've found this species in 6 other Hampshire sites, all sub-coastal. In one of them I might have hit 20 at a push, but this apart always in much lower numbers and always VERY local. In a couple of sites, it was in patches only a few yards across.
I can't distill any firm conclusions from this observation but wonder if the species is experiencing a renaissance?

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#2 2019-05-14 13:01:18

Laurence Clemons
DF Members
Name: Laurence Clemons
Registered: 2008-04-02
Posts: 379

Re: An abundance of Dorycera graminum

It can often be abundant in Kent.

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