Posted by Even Dankowicz on 21-02-2019 15:39
#8
See Plachter, 1979, "The Immature stages of the Fungus-Gnats"
Only Ditomyiidae have either such a cylindrical body or such a posteriorly tucked head among depicted Sciaroidea.
Between Ditomyia and Symmerus, the prothoracic horns resemble those of Ditomyia closely.