Tropical fungus gnats established in nurseries in the Netherlands (Diptera: Keroplatidae and Mycetophilidae)

Three species of Keroplatidae and two species of Mycetophilidae were found in association with hothouse plants at nurseries in the Netherlands. One of these, Leia arsona Hutson, was already known to be widespread in association with cultivation in Mediterranean and subtropical climates and has probably been introduced to more temperate regions by horticulture. The other four species include three known species of Neotropical origin (Lyprauta chacoensis (Edwards), Proceroplatus trinidadensis (Lane), Sciophila fractinervis Edwards), which have not previously been reported outside South or Central America, while the other species Lyprauta cambria sp. nov. is newly described but is also considered to be Neotropical in origin.