---

Possibly Proceroplatus trinidadensis, which has been spread accidentally to Europe. Being a tropical species it probably only survives in cultivated plants indoors.

Chandler, Peter J. and Juliette Pijnakker. 2009. Tropical fungus gnats established in the Netherlands (Diptera, Keroplatidae and Mycetophilidae). Br. J. Ent. Nat. Hist. 22 (https://www.resea...ilidae.pdf)