Cerodontha (Poemyza) incisa (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 : 44-45

Cerodontha (Poemyza) incisa (Meigen)

( Figs. 28 , 131 )

Material examined. IOWA: Howard Co., Hayden Prairie State Preserve, 15.vii.2015, em. 30.vii.2015, C.S. Eiseman, ex? Phalaris , #CSE1910, CNC564724 (1♀). MASSACHUSETTS: Franklin Co., Northfield, 263 Capt. Beers Plain Rd., 11.vii.2012, em. by 27.vii.2012, C.S. Eiseman, ex Phalaris arundinacea , #CSE4, CNC358500 (1♀); 276 Old Wendell Rd., 2.viii.2014, em. 11.viii.2014, C.S. Eiseman, ex Phleum pratense , #CSE1302, CNC384827–384829 (1♂ 2♀); Plymouth Co., West Bridgewater, 41.991852, -71.033550, 7.viii.2013, em. 17.viii.2013, C.S. Eiseman, ex Cinna arundinacea , #CSE816, CNC392642 (1♀); Bridgewater, 16.viii.2013, em. 18–29.viii.2013, C.S. Eiseman, ex Cinna arundinacea , #CSE826, CNC384722–384724 (2♂ 1♀); Worcester Co., Phillipston, along Burnshirt River (42.52149046, -72.09219652), 4.vii.2017, em. 15.vii.2017, C.S. Eiseman, ex Calamagrostis canadensis , #CSE3955, CNC939733 (1♂); NEW YORK: Columbia Co., Ghent, 17.vii.2015, em. 3.viii.2015, C. Vispo, ex Phalaris arundinacea , #CSE2172, CNC654350 (1♂); NORTH CAROLINA: Durham Co., Durham, 28.v.2015., em. by. 3.vi.2015, T.S. Feldman, ex Poaceae , #CSE1585, CNC564649 (1♂); Pelham Road, 27.vii.2017, em. summer 2017, T.S. Feldman, ex Poaceae , #CSE4346, CNC939824–939825 (2♀); OKLAHOMA: Payne Co., Mehan, 36.014339° N, -96.996744° W, 2.vi.2017, em. 21.vi.2017, M.W. Palmer, ex Elymus canadensis , #CSE3935, CNC939907 (1♀).

Tentatively identified material. MASSACHUSETTS: Nantucket Co., Nantucket, Squam Swamp, 27.vii.2017, em. by 22.viii.2017, C.S. Eiseman, ex Juncus tenuis , #CSE4157, CNC 939650 (1♀).

Hosts. Poaceae : Agrostis “ alba L.” [= stolonifera L.?], Bromus tectorum L., Calamagrostis * canadensis (Michx.) P. Beauv. , * Cinna arundinacea L., Elymus * canadensis L. , E. glaucus Buckley , E. repens (L.) Gould, Hordeum vulgare L., Pascopyrum smithii (Rydb.) Á. Löve , Phalaris arundinacea L., Phleum pratense L., Setaria pumila (Poir.) Roem. & Schult. , Triticum aestivum L., Zea mays L., Zizania aquatica L. ( Frick 1959; Spencer 1969). Since Juncus tenuis Willd. (Juncaceae) would represent a new host family for Cerodontha incisa , we have chosen not to list it among the confirmed hosts until males can be reared from this plant.

Leaf mine. ( Fig. 131 ) A whitish, sometimes inflated, upper surface blotch, with up to four larvae feeding together. Frass is in scattered black grains.

Puparium. ( Fig. 28 ) Elongate, black, iridescent; formed within the mine.

Distribution. Widespread in the northern half of the US and in Canada, south at least to OK and NC; Europe; Pakistan; Japan (Nowakowski, 1973).

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).