Elachista martinii
{{Short description|Species of moth}}
{{Speciesbox
| image = Elachista martinii.jpg
| genus = Elachista
| species = martinii
| authority = O. Hofmann, 1898{{cite web |url=http://www.faunaeur.org/full_results.php?id=435509|archive-url=https://web.archive.org/web/20121015115157/http://www.faunaeur.org/full_results.php?id=435509|url-status=dead|archive-date=October 15, 2012|title=Elachista (Elachista) martinii O. Hofmann, 1898|publisher=Fauna Europaea|version=2.6.2|date=August 29, 2013|access-date=November 9, 2013}}
}}
Elachista martinii is a moth of the family Elachistidae that is found from Germany and Latvia to Italy and Greece. It is also found in Russia.[http://www.entomologicafennica.org/Volume14/abstracts14_65.htm Kaila, L., Nupponen, K., Junnilainen, J., Nupponen, T., Kaitila, J.-P. & Olschwang, V. 2003: Contribution to the fauna of Elachistidae (Lepidoptera) of the Southern Ural Mountains. - Entomol. Fennica 14: 65–90.]
The larvae feed on Carex humilis. They mine the leaves of their host plant.{{cite web|url=http://www.bladmineerders.nl/minersf/lepidopteramin/elachista/martinii/martinii.htm|title=Elachista martinii O. Hofmann, 1898|publisher=Bladmineerders.nl|access-date=September 12, 2011|archive-url=https://web.archive.org/web/20120927000243/http://www.bladmineerders.nl/minersf/lepidopteramin/elachista/martinii/martinii.htm|archive-date=September 27, 2012|url-status=dead}} Larvae can be found from September to June.