
	Description
	Aster leafminer is a very small leafminer fly. The total length is unknown but the wings are only 1 ⁄16″ to ⅛″ (2 to 3 mm) long. It is most easily identified by the tracks the larvae leave in leaves. The first instar larva creates a short, linear gallery (mine) by eating below the outer tissue layer of the leaf. Later instars create a whitish, circular or oval blotch which often overruns the initial gallery.

	Size
	Wing length: 1 ⁄16″ to ⅛″ (2 to 3 mm)

	Similar Species



	Habitat
	Asters, flebanes, and many other plants in the Aster family


	Biology
	Season
	Two generations: June and Septemger to October

	Behavior


	Life Cycle


	Larva Food
	The larva pupates inside the mine.

	Adult Food


	Taxonomy
	Order	Diptera (flies)
	Suborder	Brachycera
	Infraorder	Muscomorpha
	No Rank	Eremoneura
	No Rank	Cyclorrhapha
	Zoosection	Schizophora
	Zoosubsection	Acalyptratae (acalyptrate flies)
	Superfamily	Opomyzoidea
	Family	Agromyzidae (leaf miners)
	Subfamily	Phytomyzinae
	Genus	Calycomyza

	Synonyms
	Agromyza humeralis

	Common Names
	aster leaf miner aster leafminer


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aster leafminer