Posted by John Carr on 20-09-2023 16:06
#5
Jan Maca wrote:
The larvae seem to belong to some Nematocera.
From appearance and habitat, probably Sciaridae or Mycetophilidae.
The key to Nearctic larvae says
Posterior tentorial bridge complete or nearly complete (usually visible beneath integument within occipital cavity in preserved specimens without special treatment). Abdominal creeping welts without sclerotized spicules ... Sciaridae
Posterior tentorial bridge absent or if bridge partially formed, abdominal creeping welts with sclerotized spicules ... Mycetophilidae [sensu lato], in part