grant burleigh's picture

Small Brachonid wasps? (my previous Ladybird Behaviour post cont.)

Observed: 2nd May 2009 By: grant burleighgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebrates
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Description:

Thank you for the comments. I have looked through my stored images from our site and haven't yet found a complete match with Dinocampus coccinellae. These uploads seem to come nearest. Image 1: 02/05/2009; Image 2: 27/08/2009; Image 3: 05/10/2009; Image 4: 18/10/2009; Image 5: 01/05/2010

Identifications
  •  
    Likely ID
    Brachonid wasps?
    Confidence: It might be this.
Species interactions

No interactions present.

Comments

rimo's picture

These all appear to be

These all appear to be parasitic wasps, and could well be Braconidae, but none of them look right for Dinocampus - compare them to http://www.flickr.com/photos/rcomont/4850102486/in/set-72157623774877905/ or http://www.flickr.com/photos/rcomont/4849479593/in/set-72157623774877905/ or http://www.ispot.org.uk/node/103470?nav=search

I'm not sure what you mean by parasitoids 'arising'? There are many generalist species of ladybird parasitoids in the UK, both wasps and flies, and several of them have been recorded from Harlequins in Britain (Dinocampus coccinellae, Oomyzus scaposus, and either 2 or 3 species of Phorid flies). Ongoing monitoring (mainly of Dinocampus and the Phorids) suggests that these are gradually utilising Harlequins as a prey, but if you just want to find parasitoids, you're still far better off looking in native species!

If you're particulary interested in ladybird parasitoids, the UK Ladybird Survey team are running a survey of them at http://www.bbc.co.uk/breathingplaces/ladybird-parasites/ - Dinocampus cocoons are obvious, sometimes for months after the emergence of the adult parasitoid, but most others require collection to see what comes out

Record your ladybird sightings!
www.harlequin-survey.org
www.ladybird-survey.org