Table 1.

Basic population genetic data by regions and for each population:

Species	Populations	Region	N	HO	HE	Alleles	Richness
I. elegans	All Europe (except Spain)		220	0.701	0.764	98	6.031
I. elegans	Spain		166	0.705	0.767	87	6.538
I. graellsii	Iberia-Africa		56	0.577	0.682	64	3.409
I. elegans	Doniños	Spain	20	0.711	0.700	41	6.591
I. elegans	Laxe	Spain	14	0.715	0.805	32	6.146
I. elegans	Louro	Spain	15	0.712	0.729	32	5.792
I. elegans	Arreo	Spain	15	0.631	0.761	50	7.784
I. elegans	Baldajo	Spain	17	0.603	0.795	48	7.673
I. elegans	Alfaro	Spain	20	0.663	0.758	50	7.046
I. elegans	Europa	Spain	18	0.671	0.787	48	7.109
I. elegans	Amposta	Spain	20	0.691	0.770	51	7.156
I. elegans	Marjal del Moro	Spain	20	0.671	0.751	44	5.776
I. elegans	Lublin-Zemborzyce	East Europe	14	0.7505	0.797	60	8.081
I. elegans	Vigueirat	South France	16	0.733	0.804	42	6.252
I. elegans	Gran Sasso d'Italia	Central Italy	19	0.777	0.813	51	7.461
I. elegans	Liverpool	Great Britain	16	0.624	0.709	38	5.964
I. elegans	Heuringhem	North France	19	0.729	0.781	45	7.380
I. elegans	Kaiserslautern	South Germany	17	0.765	0.770	53	8.177
I. elegans	Het Vinne	Belgium	18	0.682	0.795	46	7.248
I. elegans	Höje Å	Sweden	20	0.653	0.717	43	7.010
I. elegans	Genarp	Sweden	20	0.680	0.753	44	7.203
I. elegans	Zwięczyca Reszów	East Europe	11	0.668	0.827	52	7.264
I. elegans	Breznica	East Europe	18	0.712	0.796	47	6.678
I. elegans	Suchoi Limon	East Europe	20	0.719	0.791	45	6.537
I. elegans	Enmakov Island	East Europe	15	0.713	0.766	49	6.811
I. graellsii	Campus	Spain	17	0.485	0.694	31	3.249
I. graellsii	Córdoba	Spain	20	0.647	0.653	36	3.466
I. graellsii	Ribeira de Cobres	Portugal	14	0.684	0.719	31	3.713
I. graellsii	Saïdia	North Africa	13	0.490	0.677	25	3.118

observed (H_O) and expected heterozygosity (H_E), number of alleles and allelic richness. N represents number of individuals genotyped per population.