Cerodontha (Dizygomyza) cf. iraeos (Robineau-Desvoidy)

(Fig. 129)

Material examined. MISSOURI: Franklin Co., Gray Summit, Shaw Nature Reserve, 1.vii.2015, em. by 4– 16.vii.2015, C.S. Eiseman, ex Iris cristata, #CSE1678, CNC 564659, CNC 564660 (1♂ 1♀).

Host. Iridaceae: Iris * cristata Aiton.

Leaf mine. (Fig. 129) An elongate, irregular blotch, uniformly green or with a few small whitish patches; frass deposited in a single black lump. Larva solitary.

Puparium. Brown; formed within the mine, oriented parallel with the leaf venation.

Distribution. * USA: MO; Europe.

Comments. There are small differences between these and the available European specimens of C. iraeos . The mines on I. cristata are consistent with the account given by Ellis (2016) except that mines on European hosts are white (greenish in transmitted light).