European regional assessment: Data Deficient (DD)
EU 27 regional assessment: Not Recorded

Macromia amphigena is a widespread species for which there are no indications of a strong overall decline globally. However, it is unknown whether it actually occurs in Europe. The larvae collected in the Bashkortostan may have been this species but even if that is the case there is only a single record from Europe. It is considered Data Deficient for the European region, and has not been recorded from the EU27 Member States.

The presence of this species in the European region requires confirmation. The identity of larval records of this species from the Bashkortostan region in the southern Urals south of Perm remains to be formally confirmed. The Macromia larvae that have been found have been ascribed to this species on the basis that they cannot be another known Macromia species in this region (Boudot 2015). Furthermore there are no recent records from Europe. Whether this species was or is present in Europe is therefore not certain.

Macromia amphigena has a highly disjunct distribution over a wide range. It has been recorded from the southern Ural Mountains, the Altai Mountains, the Middle Amur, the Russian Far East and adjacent northeast China (Manchuria), the Korean Peninsula, and the whole of Japan (Boudot and Kalkman 2015). There is a gap of about 2,600 km in its distribution in southern Siberia and the species is missing between the Altai and the Middle Amur (Kosterin et al. 2001).

Whether this species has populations in Europe is unclear. In the southern Urals, only two Macromia larvae have been collected and ascribed to this species as they could not be another known Macromia in this region.

M. amphigena is common throughout Japan, where it occurs on the four main large islands and some nearby small islands. In the urban areas, local extinction occurred mainly due to pollution and poor riverbed management. However, the status of the species is not presently serious and many strong colonies remain. It is rather common in the Novosibirsk, Kemerovo and Altaï regions, apparently very rare in the southern Ural and rather rare in the middle Amur and the Russian Far East (Kosterin et al. 2001).

The species occurs in river and stream habitats; sometimes in mountain ponds and lakes.

The main threat to this species is the continued problem of water pollution from farming, domestic and industrial developments.

There is no trade or use of this species.

There are no conservation measures in place for this species, and none required for Europe. For the possible European subpopulations, the presence and distribution should be established.