Apterostigma Mayr, 1865 valid neuter
Apterostigma Mayr, 1865: 111 Type-species: Apterostigma pilosum, by monotypy.
Genus Apterostigma references

Wheeler, 1911k: 207 (species key); Emery, 1924f: 337 (diagnosis); Bolton, 1994: 105 (synoptic classification); Bolton, 1995a: 1048 (census); Lattke, 1997: 121 (diagnosis, all species revision, key); Baccaro et al., 2015: 210 (genus in Brazil); Cantone, 2017: 187 (brief male diagnosis); Fernández & Serna, 2019: 837 (Colombia species key).

Citations

Extant: 44 valid species (13 synonyms, 1 obsolete combination), 0 valid subspecies (10 synonyms, 5 obsolete combinations)

Fossil: 2 valid species