I'm a student of biology and yesterday we went to the fields to collect some plants for our herbariums.
Suddenly one student of our group said that he saw a very strange bug that he thought that was related to the family of wasps/hornets.
He pointed to some dried bushes and that insect was hidden inside. I could not do a photo but I hope that you could help me identifying this bug since it surprised me a lot (and even scared me a bit).
From what I remember, this insect had an enormous abdomen (around 5-7cm long and 3-4 cm wide) that had a similar shape to the abdomen of wasps and hornets. The rest of its body and head were very small (around 1cm). It had no wings and I think it had no "hair". It was mostly black with very few red marks/stripes.
I've been "researching" a bit and the most similar insect I found on the web was the Dasymutilla occidentalis but the insect I found had no hair (or rather I believe so), had a much bigger abdomen and was way bigger than the average "Cow Killer". Also, this bug is native to the US and I live in southern Europe, so I think it's very unlikely that this insect lives here as well (I've found no information about Dasymutilla occidentalis living in my country)
The exact location was (in UTM): 30T 0462625 4447661 (East of Madrid, Spain)
I know this description may be vague, but it is all I've got and I'm very curious about that insect I found. It would be great if you could help me