s. str.

Translingual

Abbreviation of sensu stricto.
Alternative form: s.s.
- 2008 October 1, Kim Timmermann, Michael Kuhlmann, “Redefinition of the Southern African Bee Subgenera Patellapis (s. str.), P. (Chaetalictus) and P. (Lomatalictus) (hymenoptera: Halictidae, Genus Patellapis Friese, 1909)”, in Journal of the Kansas Entomological Society, volume 81, number 4 (in English), →DOI, page 355:
  For a revision of the subgenera Patellapis (s. str.), P. (Chaetalictus) and P. (Lomatalictus) of the bee genus Patellapis Friese about 3000 specimens of more than 70 species were studied.