Table 1.
Source localities of the material and number of specimens from which karyotypes were obtained.
| Species | Country | Locality | Number |
|---|---|---|---|
| I. wasastjernae (C. R. Sahlberg) | Sweden | Umeå district | 2 |
| I. vittiger (Gyllenhall) | Sweden | Umeå district | 2 |
| I. erichsoni (Gemminger & Harold) | Sweden | Umeå district | 1 |
| I. neglectus (Erichson) | Germany | Hamburg | 3 |
| I. albarracinensis (Fery) | Spain | Sierra de Albarracin | 1 |
| I. chalconatus (Panzer) | England | Norfolk, East Harling | 1 |
| Scotland | Berwickshire, Lurgie Loch Moss | 3 | |
| Italy | Sardinia, Giara de Gesturi | 1 | |
| Greece | Crete, Rethymnon & Spili | 2 | |
| Israel | Hula | 1 | |
| I. montanus (Stephens) | England | Surrey, Wisley | 11 |
| Hampshire, Woolmer Bog | 12 | ||
| Hampshire, New Forest, Burley | 17 | ||
| Dorset, Studland Heath | 4 | ||
| Scotland | Berwickshire, Lurgie Loch Moss | 3 | |
| France | Vienne, Pinail | 1 | |
| Spain | Segovia, La Salceda | 2 | |
| Cantabria, Corconte | 1 | ||
| Denmark | Jutland, Oksby | 1 |