Tachinid flies

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    Topic
  • #15343

    Jacqui
    Moderator

    The fly on this video looks like the sort of fly you’d find around your house, but it’s much smaller.

    http://www.youtube.com/watch?v=5llTAwSVyeA

    I don’t think I would have thought much about seeing something like this around my garden or greenhouse, but I’ll be even more observant now.

    Who has seen tachinids in their garden or greenhouse? Please tell us what to look for – size, colour etc. I realise I’ve been pronouncing the name wrong too… will practice ‘ta-KAI-nid’. :)

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  • #61658

    Jacqui
    Moderator

    Thanks Norm!

    #61657

    NormTwigge
    Participant

    I am not aware of any reports of tachinid fly parasitism with New Zealand monarch butterflies. Certainly the chalcid wasp Pteromalus puparum is recorded as infecting them occasionally, but not to the extent of yellow admiral and red admiral butterflies.

    #61656

    Jacqui
    Moderator

    Hi Norm!

    I note your comment from 2012. Any update on that advice with regard to tachinid flies parasitising monarchs, please?

    #48719

    Caryl
    Moderator

    Excellent video Jacqui. Thanks for posting it. Caryl

    #48718

    butterflymusketeers
    Participant

    Hi is this still the case in NZ no reports? This makes my skin crawl reading about the flies, seen a couple of videos of them breaking the Cat in half and eggs falling out the Cat body – horrible.

    #30509

    NormTwigge
    Participant

    New Zealand has many native tachinid fly species which parasite various moth caterpillars such as the Bag moth, Magpie moth, Cabbage tree moth and others. One species of tachinid fly is responsible a for high rate of parasitism among the Forest ringlet butterfly.
    Other species of tachinid flies have been introduced as biological control agents for specific caterpillars that feed on agricultural crops.
    Tachinids are known to parasite monarch caterpillars in Australia and North America, but there does not appear to be any records of them infecting monarchs in New Zealand.

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