Anyway, I have been looking a the genus Ischnura in Iberia. Adolfo Cordero at the Iberian Symposium back in May 2015 gave a superb paper on the genus and emphasised the need for voucher specimens for this difficult genus in the Peninsula. I took his comments on board and the results are included in a subpage of "The dragonflies of Iberia". Look under Coenagrionidae.
Interesting results that might help you with identification - good hunting