rossett's picture

Sand Wasp Grub Diet

Last Summer along my local River in North Wales I came across a large groupe of what I think were Red-banded Sand Wasps (Ammophila sabulosa).

Lots and lots of wasps holes in a sandbank, but just lots of individual, solitary wasps in the same habitat, not a colony by any means.

Everything I've read so far talks about these wasps gathering caterpillars to stock their brood chambers with. But the ones I observed were only taking flies.. huge big bluebottle flies though. I was amazed how they could carry something that was so much bigger and heavier than these little dainty looking wasps.

My Question: Sand wasps don't only take caterpillars do they? They to pick up other insects as well? Otherwise I'll have mis identified them?



Matt Smith's picture


If they were bringing back bluebottle type flies then they weren't Ammophila wasps, Ammophila only stocks the burrow with caterpillars.

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