Abstract
A new species of Mycetophilidae in the genus Docosia Winnertz, 1864 is described, Docosiatazekkae Chandler, El Mouden & Belqat, sp. nov., with the addition of eighteen new records of fungus gnats to the fauna of North Africa. Most of the new taxa of fungus gnats are found in Morocco, especially in the National Park of Tazekka, where a total of 69 species are recorded for the first time, thus enriching the fauna of these gnats in the Middle Atlas region; the greatest species richness is observed in caves. All these findings attest to the high biodiversity of the fungus gnats in Morocco, which, among the North African countries, has the best-known fauna.