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Hi Nikita
Please don't quote me on that identification! Limothrips just happens to be a common black thrips that is often around at this time of year, and most of the ones I catch prove to be this species.
In fact, looking more carefully, I think the legs on your thrips are too long, so I retract my former identification and will simply say Thysanoptera - a thrips.
It's interesting that Medetera can quickly turn a thrips into such an unrecognisable thing as in photo 3. If I had not seen the first two images, I couldn't have begun to guess what the prey might be!:)