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Photo#1523914
Fly leaf mine on Lonicera - Aulagromyza cornigera

Fly leaf mine on Lonicera - Aulagromyza cornigera
Dearborn, Wayne County, Michigan, USA
May 7, 2018
I found a number of fly mines on new leaves of various non-native honeysuckles, here on Lonicera x bella. Although leaves have only been out for less than 2 weeks, most mines have been empty; this one had a larva just departing but I was unable to "catch" it. I am not sure if A. cornigera is the only Lonicera-feeding fly with a mine like this.

Moved
Moved from Aulagromyza.

 
Thanks, Charley
I see that part of my description had been cut off which I've now restored. Thanks for confirming that this is the species on honeysuckles now. I have found similar mines on nearby Triosteum that I had assumed were the same fly, but perhaps not.

 
That would be interesting
This species is not known to use Triosteum, but it does seem likely given the phenology. Did you happen to get photos of those mines? The frass pattern (discrete, widely spaced grains) is pretty distinctive.

 
Just posted
The mines on Triosteum -- two different-looking mines on different plants. Do these flies have another generation? I'm bummed I missed raising them.

 
Just one generation
And they overwinter as puparia, so it takes some dedication to rear them. I managed to rear a few last year for the first time.

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