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Thanks Theo, this one was not collected, sorry. Looking externally, I think the genitalia must look similar between these species. This is a supposed male T.magnicornis:
https://www.biodi...11982.html

The key says for T.magnicornis: anterior claws longer than the last tarsal segment (and for T.nupta: anterior claws at most as long as the last tarsal segment) so now I think it fits better with T.magnicornis (and T.nupta is not recorded in Spain). In the picture (fore leg with the apex horizontal), the claws are 0.69 px and the last tarsi 0.28 px.

And also, If the tergite assignation is correct, the black longitudinal abdominal stripe widens towards the end on tergite 5 and is not ending in a point (see T. nupta https://www.dipte...d_id=97804 to see the difference)

But in Spain there is also T.casta and is not in the (central) European Keys and don't know how it is.