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Photo#1411938
Leigh Farm Park leaf miner on Dichanthelium D779 and D779A 2017 1 - Cycloplasis panicifoliella

Leigh Farm Park leaf miner on Dichanthelium D779 and D779A 2017 1 - Cycloplasis panicifoliella
Leigh Farm Park, Durham, Durham County, North Carolina, USA
July 24, 2017
D779 is the Diptera (Cerodontha) and D779A is a lep? Is this Cycloplasis? It looked different to me--a longer and wider mine trail.

Images of this individual: tag all
Leigh Farm Park leaf miner on Dichanthelium D779 and D779A 2017 1 - Cycloplasis panicifoliella Leigh Farm Park leaf miner on Dichanthelium D779 and D779A 2017 2 - Cycloplasis panicifoliella Leigh Farm Park leaf miner on Dichanthelium D779 and D779A 2017 3 - Cycloplasis panicifoliella Leigh Farm Park leaf miner on Dichanthelium D779 and D779A 2017 4 - Cycloplasis panicifoliella

Moved
Moved from Unidentified Leaf Mines.

The adult has emerged. Very strange: the mine is entirely linear rather than forming a blotch, and the larva spun a cocoon in the leaf (the dark spot 1 cm from the leaf base) rather than making a circular cut-out, but it is definitely Cycloplasis panicifoliella.

 
I agree that it is strange--m
I agree that it is strange--my first thought was to compare this mine to Cycloplasis mines I had seen before--the reason I posted it was because it did not seem to match at all. Really strange, but interesting!

Elachista?
There are two Elachista species recorded from Dichanthelium, but every time I think I've found one it turns into Cycloplasis. Guess we'll wait and see. The mine descriptions for the Elachista in the literature are pretty much the same as for Cycloplasis except the larva exits to spin a cocoon, without cutting a circle out of the upper epidermis.

 
This one seems to fit that de
This one seems to fit that description--I think it has just exited (or retreated down the original mine?), and I do not see any circular cut. I am not sure how big of a pupa I would see, or where I might look for it--I did not see anything obvious on the outside of the leaves or stem.

 
The pupa would be about 4 mm long
It might be naked (as in this post) or in a cocoon.

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