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The Society for the study of flies (Diptera)

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#1 2018-05-26 21:06:37

batch valley wildlife
DF Members
Name: Mike Shurmer
From: Shropshire VC40
Registered: 2015-02-20
Posts: 32

Ephydridae

Hi all

I am interested in whether I am likely to be able to take this Ephydridae to genus or even species. Not a family I have ever looked at before, but I would be interested for this site.

Many thanks

Mike


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Last edited by batch valley wildlife (2018-05-26 21:08:58)

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#2 2018-05-26 22:29:10

Tony Irwin
DF Members
Name: Tony Irwin
From: Norwich
Registered: 2008-03-01
Posts: 762

Re: Ephydridae

Looks like Hydrellia. There are two common species - griseola and maura. Neither of them have posteroventral setulae on the mid femur. They are most easily separated by the male genitalia, and it looks like yours is a male. H.maura has two processes on each surstylus, whereas griseola has simple surstyli. Also griseola has grey humeri, with the grey extending back onto the anterior part of the notopleuron at least, and the notopleuron appears lighter than the dorsum. In maura, the grey is usually confined to the front of the humerus, and does not extend back onto the notopleuron, which is the same colour as the dorsum. (For drawings of the genitalia and a key to Hydrellia species, see Martin Drake's key at https://www.diptera-in-beeld.nl/Ref-Key … .Drake.pdf )

Last edited by Tony Irwin (2018-05-26 22:31:05)

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#3 2018-06-01 20:26:21

batch valley wildlife
DF Members
Name: Mike Shurmer
From: Shropshire VC40
Registered: 2015-02-20
Posts: 32

Re: Ephydridae

Thanks Tony

Once I have finished going through my samples I will pull some out and have a go with the key.

Mike

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