Liriomyza pistilla Lonsdale

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 : 53

Liriomyza pistilla Lonsdale

( Fig. 149 )

Material examined. MASSACHUSETTS: Franklin Co. , Sunderland, Mt. Toby , 27.vi.2014, em. by 15.vii.2014, N. D. Charney, ex Melampyrum lineare , #CSE1183, CNC384842–384844 (3♂) ; Hampshire Co., Pelham, Butter Hill Wildlife Sanctuary , 2.vi.2015, em . 20–23.vi.2015, C.S. Eiseman, ex Melampyrum lineare , #CSE1635, CNC564685–564689 (3♂ 2♀); Nantucket Co., Nantucket, Masquetuck , 11.vi.2013, em . 26–30.vi.2013, C.S. Eiseman, ex Melampyrum lineare , #CSE610, CNC422920–422923 (1♂ 3♀).

Host. Orobanchaceae : Melampyrum lineare Desr.

Leaf mine. ( Fig. 149 ) Whitish, upper surface; initially narrow and linear, then forming a blotch that may obliterate the linear portion. Frass is in scattered grains and short strips. The mines from Mt. Toby were rather different from others we have seen, consisting of long, linear mines contorted to form secondary blotches, with frass in alternating beaded strips.

Puparium. Yellowish; formed outside the mine.

Distribution. USA: MA, NC; Canada: AB, BC, NS, ON, QC.

Comments. This is presumably the species responsible for the unidentified linear-blotch mine on Melampyrum lineare that Spencer (1969) reported from Quebec.

Figures

FIGURES 144–153. leaf mines; 144: Liriomyza limopsis Lonsdale in Eurybia divaricata; 145: L. limopsis in Oclemena acuminata; 146: L. orilliensis Spencer in Prenanthes sp.; 147: same, detail of frass; 148: L. pilicornis Lonsdale in Comandra umbellata; 149: L. pistilla Lonsdale in Melampyrum lineare; 150: L. ptarmicae de Meijere in Artemisia vulgaris; 151: L. sativae Blanchard in Astragalus cicer; 152: L. smilacinae Spencer in Maianthemum canadense; 153: L. taraxaci Hering in Taraxacum officinale.