Myrmecophilus acervorum (Panzer, 1799)


Myrmecophilus acervorum: Adult [M] Myrmecophilus acervorum: Here you can see three specimens on the lower side of a stone, under which there was a nest of the ant Lasius flavus (eastern Swabian Alb near Heidenheim/Brenz, May 2013) [M] Myrmecophilus acervorum: Eastern Swabian Alb near Heidenheim/Brenz, May 2013 [M] Myrmecophilus acervorum: Eastern Swabian Alb near Heidenheim/Brenz, May 2013 [M] Myrmecophilus acervorum: Eastern Swabian Alb near Heidenheim/Brenz, May 2013 [M] Myrmecophilus acervorum: Habitat on the eastern Swabian Alb: quarry embankment with stones [N] Myrmecophilus acervorum: Longtime observation stone, below which a colony of Lasius flavus lives together with Myrmecophilus [N]

Nutrition:
Apparently the species feeds on ant brood and rotten plants. The animals are obviously partly fed by the ants.

Habitat:
Mostly Myrmecophilus acervorum inhabits warm, dry habitats such as quarries, margins of nutrient-poor grasslands and open forests. On the other hand, Myrmecophilus acervorum has also been found in settlements.

Life cycle:
Imagines are found year-round. They live in ant nests, particularly in those of Lasius species such as Lasius flavus. It can be found most easily by turning over stones, especially in the morning or in late April or May and again in late summer, when the stone bases are not too warm and well staffed with ants.

Endangerment: U

Endangerment factors:
The risk is difficult to assess. But at least the dry grassland habitats are in danger (habitat changes with respect to the micro-climate).

Remarks:
Myrmecophilus acervorum occurs from France to Russia. The situation in the Mediterranean is obviously not finally solved due to similar species and determination difficulties.


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