There must be some breeders over in Spain who would be willing to go oit and collect some Empusa.Awwww bummer!! sorry I hope to travel to europe one day and be able to collect Empusa sp. in Spain or France. Hopefully you have better luck next time don't give up.
I never gave up - but I think that the fact that the previous owner brought them into diapause with flat abdomens, and 3 molts before adulthood might have screwed up those nymphs. Out of 5 pairs only 2 made it through diapause. It's a shame, but at least I know I can provide the proper conditions for them - having a cool cellar can be very helpful