Little information is available regarding the non-phlebotomine Psychodidae Newman, 1834 of French Guiana. Psychodid specimens were sorted from samples collected during the recent “Our Planet Reviewed” Guyane-2015 expedition in the Mitaraka range. Males and females of two genera of tribe Maruinini Enderlein, 1937, Polletomyia subulata n. gen., n. sp. and Myiomystax trilineata n. gen., n. sp., are described and illustrated. Characters pertinent to assessing relationships among genera of Maruinini are discussed.