Monday, June 27, 2011

Wasp Mimics

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Bee Mimics

The insect diversity in our yard has increased significantly each year since adding native plants.

My husband spotted this black and yellow wasp mimic just this weekend perched on some foliage.
Xylomya terminalis

It's actually a fly dressed like a parasitic wasp. A Xylomyid Fly (Xylomya terminalis), it lays eggs under bark or in wet wood where its larvae develop and "feed on the larvae of other insects" (Insects Their Natural History and Diversity). I would suspect that its larvae are parasitized by Ichneumon wasps.

The second wasp mimic spotted recently in the yard was a Stilt-Legged Fly (Rainieria antennaepes). These tiny long legged flies even have a thread waist like a wasp. "...this species waves its white-tipped front legs much the way wasps wave their antennae." "Stilt-legged flies are easy to watch, since they frequent exposed leaves and other surfaces where curious naturalists can get an eyeful of their strange sex lives." (Insects Their Natural History and Diversity)



6 comments:

  1. you have the coolest insects but I might surprise myself by watching my insects and seeing more than I imagined...will have to spend more time doing that this summer

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  2. Super pictures. I too need to pay more attention to the critters visiting my plants. Thanks for your insect posts, they are very informative.

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  3. Wow, these are really cool. I know I have many more insects as my garden grows and I add more native plants. These wasp mimics I have yet to see although I do have quite a variety of flies. Last night I watched the fireflies for the first time this summer - which apparently are beetles not really flies. Just amazing. I am sure you have many many interesting insects. Warblers, too, since they eat them. Also enjoyed your previous post about the elderberry and warblers!

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  4. Hi Donna,
    I'll bet you have many interesting insects in your landscape. Good luck.
    Heather

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  5. Hi Ellen,
    Thanks for your comment, I'm glad you like the insect posts.
    Heather

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  6. Hi VF,
    We have a few fireflies but I hope to see more. Our weather hasn't cooperated to sit out in the evenings and watch for fireflies.
    Heather

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