Hybrid Region Locality Oldest data Colonization Recolonization Current dominant species Molecular data
North-central Spain
Mateo
2015, only I. graellsii
2016, I. graellsii, occasionally I. elegans
2017 (dried), both species
2018, I. graellsii, occasionally I. elegans
2015
Valpierre 2008, only I. graellsii 2016, I. graellsii, occasionally I. elegans 2017-2018, I. graellsii, occasionally I. elegans 2015
Villar 2008, both species 2015-2018, both species 2015
Arreo 2008, both species 2008-2015, both species 2008
Perdiguero 2008, both species 2015-2018, both species 2015
Las Cañas
2007, both species
2012 (dried), both species
2015-2017, both species
2015
Valbornedo 2008, I. elegans 2015-2018, both species 2015
North-west Spain Doniños 1987, only I. elegans 1987-2021, I. elegans occasionally I. graellsii 2014
Laxe
2000, only I. elegans
2000 (dried), I. elegans
2001-2021, I. elegans, occasionally I. graellsii
2014
Xuño
2001, only I. graellsii
2003, I. graellsii, occasionally I. elegans
2004-2006, both species 2007-2021, only I. graellsii
2014
Louro 1980, both species 2010 (brackish water), I. graellsii, occasionally I. elegans 2013-2021, I. graellsii, occasionally I. elegans 2013