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

Eiseman, Charles S. & Lonsdale, Owen, 2018, New state and host records for Agromyzidae (Diptera) in the United States, with the description of thirty new species, Zootaxa 4479 (1), pp. 1-156 : 43-44

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).

Figures

FIGURES 124–132. leaf mines; 124: Cerodontha (Butomomyza) angulata (Loew) in Dichanthelium clandestinum (puparium on leaf surface at lower left); 125: C. (B.) angulata in Carex sp.; 126: C. (C.) dorsalis (Loew) in Triticosecale sp.; 127: C. (Dizygomyza) edithae spec. nov. in Iris versicolor (puparium at left); 128: C. (D.) feldmani spec. nov. in Carex flaccosperma (puparium at far left; other dark spot is a dead larva); 129: C. (D.) cf. iraeos (Robineau-Desvoidy) in Iris cristata (brown puparium to right of black frass spot); 130: C. (D.) morosa (Meigen) in Carex leptonervia (puparium at right); 131: C. (Poemyza) incisa (Meigen) in Cinna arundinacea (transmitted light, with two puparia); 132: C. (P.) inconspicua (Malloch) in Elymus virginicus (transmitted light, with two puparia).