The Black Fungus Gnats (Diptera, Sciaridae) of the Global Malaise Trap Project from a garden in Trondheim (Norway).

The global inventory of Arthropoda from one year of Malaise trap sampling in a garden resulted in 827 specimens of Sciaridae. The COI sequence was analysed for each specimen. Hereby 129 different BINs were obtained and 78 (60%) BINs comprising 71% of the individuals could already be identified by BIN-matching. Therefore previous identifications from other projects, mainly German Barcode of Life (GBOL) and the Norwegian Taxonomy Initiative (NTI) project for Sciaridae could be used. Specimens of the 51 remaining BINs were sorted out and slide mounted for microscopic identification. In total 677 individuals (82%) of 94 BINs could be assigned to known species. 10 BINs need to be checked for possible cryptic species, 11 BINs belong to undescribed species and 14 BINs could not yet be identified, because only females were present. The COI analysis of complete Malaise traps has several advantages over traditional identification by morphological methods: Misidentifications is less probable. Not only males, but also females can be distinguished, leading to higher numbers of species. Different BINs for the same morphological species may give helpful hints to the possible existence of cryptic species. For the first time, the existence of species is documented, of which males are either found only very difficultly or which are completely parthenogenetic.