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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Gnats, Gall Midges, and March Flies (Bibionomorpha) » Fungus Gnats and Gall Midges (Sciaroidea) » Gall Midges and Wood Midges (Cecidomyiidae) » Gall Midges (Cecidomyiinae) » Lasiopteridi » Oligotrophini » Rhopalomyia » Goldenrod Bunch Gall (Rhopalomyia solidaginis)
Photo#461313
Adult fly emerging from pupal case - Rhopalomyia solidaginis - male
Copyright © 2010 Beatriz Moisset

Adult fly emerging from pupal case - Rhopalomyia solidaginis - Male
Rancocas Nature Center NJAS, Burlington County, New Jersey, USA
October 1, 2010
Size: 4 mm
I finally got an image of this gall maker. I was taking pictures of the pupa which I had just removed from a bunch gall collected on September 18. It was very restless; suddenly my annoyance turned into delight and amazement when I realized that the adult was trying to get out of the pupal case. Better yet, I had just replaced the batteries, so I kept the video camera running. the whole process took less than 5 minutes. Here is the video.
I guess that the recently emerged adult pumps some air so it becomes larger than the pupal case it just emerged from.
Dr. Netta Dorchin confirmed the ID of this individual.

More on goldenrod galls fauna.
Higher res. image

Images of this individual: tag all
Adult fly emerging from pupal case - Rhopalomyia solidaginis - male Adult fly emerging from pupal case - Rhopalomyia solidaginis - male Adult fly emerging from pupal case - Rhopalomyia solidaginis Adult fly emerging from pupal case - Rhopalomyia solidaginis Adult fly emerging from pupal case - Rhopalomyia solidaginis Adult fly emerging from pupal case - Rhopalomyia solidaginis - male Adult fly emerging from pupal case - Rhopalomyia solidaginis - male Adult fly emerging from pupal case - Rhopalomyia solidaginis - male Adult fly emerging from pupal case - Rhopalomyia solidaginis - male Adult fly emerging from pupal case - Rhopalomyia solidaginis - male
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Contributed by Beatriz Moisset on 3 October, 2010 - 3:40pm
Last updated 13 January, 2019 - 9:44am

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