Compost Fly
Adelaide Hills
Compost Fly
Male twisting more
Compost Fly (Bibio imitator)Class: Animals (Animalia) - Jointed Legs (Arthropoda) - Insects (Insecta)
Order: Flies (Diptera)
Family: March Fly (Bibionidae)     iNaturalist Observation
Species: Compost Fly (Bibio imitator)
This Photo:     Size, ventral, Male starting to twist
Other name: Garden Maggot

Thank you Reiner Richter & Even Dankowicz for confirming the id of this species for us

EXTRA - Photo Specific Information:
A very strange situation. We caught these two in the act (literally caught them and put them into an insect box while they were in the act). Normally they would have been fine. But she was panicking and got him so twisted he fell unconscious. Even then he didn't let go. In his "sleep" he must have had a dream and when he woke up he finished pretty quickly and they parted.
General Species Information:
Found in the Adelaide Hills and possibly elsewhere

Copyright © 2015-2023 Brett & Marie Smith. All Rights Reserved. Photographed 04-Dec-2015
This species is an Australian Native Species, not listed in the SA Murray Mallee Survey of 2010.