An inconspicuous pioneer species, typical for the initial succession stages, especially for small, recently exposed siliceous stones or wood impregnated with mineral particles and plant detritus. Curiously, it has been noticed on the slowly decaying hare droppings. In the Czech Republic, A. delutula is found relatively rarely and occurs scattered in rather shady or lighter habitats with a humid microclimate. Almost surely, it is overlooked. It avoids limestone areas. It is found in natural (river alluvium), semi-natural (e.g. eroding edges of forest trails) and anthropogenic habitats (e.g. settling pits of thermal power stations). In its localities, this species usually occurs in a high abundance. However, the population size can transform over the years depending on the number of suitable substrates. It is a sub-cosmopolitan species known from both hemispheres.taxonomic classification:
All records: 29, confirmed 18. One click on a selected square displays particular record(s), including their source(s).