Acaulospora lacunosa results from the distinctive ornamentation in its spores. Pitted spores are also produced by A. cavernata, A. foveata, A. paulinae, A. scrobiculata, and A. undulata. However, the pits of A. lacunosa spores are more both irregularly-shaped and scattered. Additionally, spores of A. cavernata and A. foveata are darker-coloured and larger, and those of A. paulinae and A. undulata are smaller and lighter.
We suggest this species to be categorized as Least Concern (LC) due to the several records worldwide.
The species is known in 10 countries.
A very common species in several countries. It has 94 data according to GBIF when searching Acaulospora lacunosa.
Population Trend: Stable
In Brazil, this fungus is found in forests under different biomes: Caatinga, Atlantic Forest and Cerrado. In addition to anthropized environments (Agrosystems, Pastures and Mining).
In Brazil, Acaulospora lacunosa can be found in associated with biomes that have high rates of anthropic disturbance, such as deforestation.
Some records in Brazil are in unprotected areas. The isolation of this fungus in controlled condition represents an advance for the conservation of this species.
Other areas should be studied in order to assess the distribution of this species.
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obim, K., Vista, X. M., & Goto, B. T. 2018. Updates on the knowledge of Arbuscular Mycorrhizal Fungi (Glomeromycotina) in the Atlantic Forest biome–an example of very high species richness in the Brazilian landscape. Mycotaxon, 133(1), 209-209.