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Tag Archives: mummy wasp

Aleiodes wasp update

05 Thursday Sep 2024

Posted by sconzani in insects

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Aleiodes wasp, British wasps, mummy wasp, parasitic wasp

When I checked the jars on my kitchen window sill yesterday morning, I discovered the Aleiodes wasp I blogged about last week had hatched (Aleiodes mummy wasp, 28 August). And here she is …

240905 aleiodes wasp (3)

The photo above was taken through the glass of its jar so apologies that it’s not very sharp, but you can see she’s a female by the presence of the sharp ovipositor poking out the bottom of her body. And a reminder, below, of how small the cocoon was: approximately 7mm long, so I would guess the wasp was around 6mm.

240905 aleiodes wasp (2)

Finally, the image on the left below (also not very clear) shows the small circular dark hole on the underside of the cocoon where the tiny wasp had chewed her way out into the world. And, on the right, the wasp sitting, very briefly, on the outside of the jar before she flew off to begin her life in the wild.

240905 aleiodes wasp (1)

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Aleiodes mummy wasp

28 Wednesday Aug 2024

Posted by sconzani in insects

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Aleiodes wasp, British wasps, caterpillar parasitised by wasp, mummy wasp, parasitic wasp

I found this remarkable but tiny object a couple of weeks ago when checking out some Buff-tip moth caterpillars on a small willow tree, but I’ve delayed posting about it until I had confirmation of identification.

240828 aleiodes (2)

The situation is this: a female Aleiodes wasp (species unknown) laid her egg in a caterpillar (species also unknown). When the egg hatched, it fed inside the caterpillar, eventually leaving the skin of the caterpillar hardened, in a state many people describe as a ‘mummy’, which is why the Aleiodes wasps are commonly referred to as mummy wasps. The wasp larva pupates inside the mummy, and will eventually bite a hole in the outer skin to emerge as an adult. As I was intrigued to see what might emerge, I’ve brought this mummy home, and it’s currently in a jar on my kitchen window. If/when something emerges, I’ll post about it.

240828 aleiodes (1)

There’s an image on Bug Guide website that looks quite similar to the mummy I found, and another on Jungle Dragon, where you can see the exit hole made by the adult wasp (or wasps) when it/they emerged from pupation.

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About me

sconzani

sconzani

I'm a writer and photographer; researcher and blogger; birder and nature lover; countryside rambler and city strider; volunteer and biodiversity recorder.

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