Martin Harvey's picture

Pipunculidae - Buckinghamshire

Observed: 21st September 2013 By: Martin Harvey
Berkshire Moth GroupFSC - Field Studies CouncilSoldierflies and Allies Recording SchemeBuckinghamshire Invertebrate Group
Invertebrates expert
Pipunculidae - Great Kimble-001
Pipunculidae - Great Kimble-002
Pipunculidae - Great Kimble
Description:

I've been trying to key this out, starting from the very useful keys that David Gibbs has made available at: http://davidjgibbs.webs.com/pipunculidae.htm
But I can't arrive at an entirely satisfactory conclusion so far. The fly is small (wing length just over 3mm). It has no long hairs on the thorax, and no dark stigma mark on the wing. The position of the cross-vein is the next question, and this one seems to fall between being in the basal third of the discal cell (which would mean genus Dorylomorpha) or in the middle of the discal cell (genus Tomosvaryella).
I think it is nearer the latter (partly based on size), and if so it leads to Tomosvaryella palliditarsis, but I don't have a lot of confidence in that conclusion.

Identifications
Species interactions

No interactions present.

Comments

ophrys's picture

Pipunculid

I have an increasing collection of unidentified pipunculids, but (using Coe) I can never quite pluck up the courage to get to a species ID with most of them! I need a workshop on them, really, to get some identified by an expert and so have some certainty to base other IDs on. Annoying, as they look so distinctive and as if they ought to be okay.

Yours looks to have palliditarsis, at least at the front end!

Ian
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Martin Harvey's picture

pips

Ian, do have a go at David's keys, downloadable from the above link, they should be easier to use than Coe. But clearly there is variation among the species that can still catch one out!

They are intriguing little flies, would be good to get more familiar with them. For those unfamiliar with them, they are parasitoids leafhoppers, and the third photo shows the pointed ovipositor ('piercer') used to attack their hosts.

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Entomologist and biological recorder

jeremyr's picture

Coe?

Hi Martin, I've got a key to genera that's un-named but looks similar in style to the new keys, and a ph.d thesis by Mihaly Foldvari but I haven't heard of Coe. Is it something that's available online, and would you know if there's anything in the pipeline for Eudorylas?

cheers,
Jeremy

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Martin Harvey's picture

Coe

Ralph Coe is the author of the RES handbook to Pipunculidae:
http://www.field-studies-council.org/publications/pubs/diptera-pipunculi...

It's a helpful resource to have in addition to the newer draft keys, but it's not entirely reliable for ID, and taxonomy has changed since 1966.

There's a bit of info on Eudorylas here: http://www.dipteristsforum.org.uk/t99-Eudorylas.html

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Entomologist and biological recorder

ophrys's picture

Keys

Thanks for the tip Martin. I had forgotten about David Gibbs' keys, to be honest. I'll give them a go...one for the dark winter nights!

Ian
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