Cerodontha (Dizygomyza) morosa (Meigen)

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 : 44

Cerodontha (Dizygomyza) morosa (Meigen)

( Figs. 27 , 130 )

Material examined. MASSACHUSETTS: Berkshire Co., Alford , 12.vi.2015, em. 20.vi.2015, C.S. Eiseman, ex Carex leptonervia bract, #CSE1632, CNC564669 (1♂) ; Lenox, Mahanna Cobble , 23.vi.2016, em. 28.vi.2016, C.S. Eiseman, ex Carex gracillima , #CSE2644, CNC634778 (1♂) ; em. 30.vi–4.vii.2016, C.S. Eiseman, ex Carex hitchcockiana , #CSE2678, CNC654235, CNC654236 (1♂ 1♀).

Tentatively identified material. OKLAHOMA: Payne Co., Marena , 28.v.2016, em. 8–13.vi.2016, M.W. Palmer, ex Carex festucacea , #CSE2568, CNC634779 (1♀) ; Mehan , 36.014339° N, 96.996744° W, 6.v.2016, em. 8.v.2016, M.W. Palmer, ex Carex festucacea , #CSE2665, CNC634805 (1♀) .

Hosts. Cyperaceae : Carex * gracillima Schwein., C. * hitchcockiana Dewey, C. * leptonervia (Fernald) Fernald ; numerous other Carex spp. in Europe. Spencer & Steyskal (1986) listed this species as feeding on C. crus-corvi Shuttlw. ex Kunze, but this was apparently in error since they indicated elsewhere that reared specimens are unknown in North America.

Leaf mine. ( Fig. 130 ) A long, whitish corridor, changing direction a few times, with frass in a single blackish lump toward the leaf apex.

Puparium. ( Fig. 27 ) Yellowish or reddish to blackish-brown; formed within the mine ( Spencer & Steyskal 1986), glued to the floor toward the base of the leaf.

Distribution. USA: CA, *MA, MT; Spencer & Steyskal (1986) note that Frick’s (1959) records of IL, IN, MD and SD require verification; Europe.

Figures

FIGURE 22–29. Figure 22: Cerodontha (Butomomyza) angulata (Loew), empty puparium. Figure 23: Cerodontha (Butomomyza) sp. 1., empty puparia (left one parasitized by a braconid wasp). Figure 24: C. (Dizygomyza) edithae spec. nov., adult male. Figures 25–26: C. (D.) feldmani spec. nov.; 25: adult male; 26: empty puparium. Figure 27: C. (D.) morosa (Meigen), empty puparium. Figure 28: C. (Poemyza) incisa (Meigen), puparium. Figure 29: C. (P.) inconspicua (Malloch), puparia.

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).