Cerodontha (Dizygomyza) luctuosa (Meigen)

Material examined. OKLAHOMA: Payne Co., Mehan, 36.014339° N, - 96.996744° W, 26.v.2017, em. 15– 18.vi.2017, M.W. Palmer, ex Juncus marginatus, #CSE3933, CNC939902, 939903 (2♀) .

Hosts. Juncaceae: Juncus * marginatus Rostk.

Leaf mine. A long, yellowish, interparenchymal mine, with the frass deposited in a single large lump. Up to three larvae may feed in a common mine (Spencer & Steyskal 1986; Ellis 2018). M. Palmer (in litt.) noted that one of the adults exited through a hole 1 cm away from its puparium.

Puparium. Slender, brown; formed within the mine (Spencer & Steyskal 1986; Ellis 2018).

Distribution. USA: AK, CA, CO, NY, *OK, OR, TX (Boucher 2005), WA; Canada: NS (Frick 1959), NT; Mexico (Boucher 2005); Europe.

Comments. This is the first North American rearing record for Cerodontha (Dizygomyza) luctuosa .