Agromyza parca Spencer

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 : 11

Agromyza parca Spencer

( Fig. 72 )

Material examined. MASSACHUSETTS: Franklin Co., Northfield, 276 Old Wendell Rd. , 24.vi.2017, em. 11– 17.vii.2017, C.S. Eiseman, ex Glyceria striata , #CSE3913, CNC939665–939669 (1♂ 4♀) ; Hampshire Co., Pelham, Arnold Rd., 2.vii.2013, em. 20–22.vii.2013, C.S. Eiseman, ex Dichanthelium clandestinum , #CSE724, CNC392666 , CNC392667 (1♂ 1♀) ; Middlesex Co., Townsend, 42.68888526, -71.75159779, 19.vii.2017, em. 3– 4.viii.2017, C.S. Eiseman, ex Glyceria canadensis , #CSE4062, CNC939729–939731 (2♂ 1♀); Plymouth Co. , West Bridgewater, Maple St., 15.viii.2013, em. 2–5.ix.2013, C.S. Eiseman, ex Dichanthelium clandestinum , #CSE866, CNC392683–392687 (2♂ 3♀) ; same collection data, em. 20–23.iv.2014, #CSE1089, CNC384728, CNC384729 (2♀).

Hosts. * Poaceae : Dichanthelium clandestinum (L.) Gould, Glyceria canadensis (Michx.) Trin. , G. striata (Lam.) Hitchc.

Leaf mine. ( Fig. 72 ) Eggs are inserted near the leaf margin, associated with a cluster of feeding punctures. The gregarious larvae initially mine along the margin toward the apex, then turn around and form a large, dirty whitish upper surface blotch with generally distributed, liquidy, greenish to brown frass. Concentric feeding lines are present in some mines. The mines on Glyceria striata were on the lower leaf surface.

Puparium. Yellowish-brown to reddish-brown; formed outside the mine.

Distribution. USA: *MA, NC, TN.

Figures

FIGURES 63–74. leaf mines; 63: Agromyza albitarsis Meigen in Populus balsamifera; 64: A. ambrosivora Spencer in Helianthus annuus; 65: A. aristata Malloch in Ulmus rubra; 66: A. bispinata Spencer in Elymus hystrix; 67: A. diversa Johnson in Laportea canadensis; 68: A. fission spec. nov. in Celtis occidentalis; 69: A. idaeiana Hardy in Geum macrophyllum; 70: A. isolata Malloch in Populus balsamifera, young mines (left) with probable A albitarsis mine at leaf margin; 71: same Populus balsamifera leaf with completed mines, A. isolata to left of midrib and probable A. albitarsis to right; 72: A. parca Spencer in Dichanthelium clandestinum; 73: A. pseudoreptans Nowakowski in Urtica dioica; 74: A. pudica in Dichanthelium scoparium.