Phytomyza crassiseta Zetterstedt,

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: 71

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Phytomyza crassiseta Zetterstedt


Phytomyza crassiseta Zetterstedt 

( Fig. 184View FIGURES 180–188)

Material examined. MASSACHUSETTS: Franklin Co.  , Sunderland, Falls Rd. , 13.vii.2012, em  . 23.vii.2012, C.S. Eiseman, ex Veronica officinalis  (1♀); Hampshire Co., Pelham, 88 Arnold Rd. ,, em  . 2–16.vii.2014, C.S. Eiseman, ex Veronica chamaedrys  , #CSE1148, CNC384850–384862 (13♀); NORTH CAROLINA: Durham Co., Durham, Duke University , 23.v.2016, em  . 29.v –, T.S. Feldman, ex Veronica persica  , #CSE2517, CNC654295–654302 (8♀); Pelham Rd. , 30.iv.2016, em  . 14–16.v.2016, T.S. Feldman, ex Veronica peregrina  , #CSE2461, CNC634800–634803 (4♀); 14.vii.2017, em. 26–31.vii.2017, T.S. Feldman, ex Veronica serpyllifolia  , #CSE4022, CNC939784 (1♀); Scotland Co., Laurinburg, St. Andrews University , 2.v.2016, em  . 17.v.2016, T.S. Feldman, ex Veronica arvensis  , #CSE2468, CNC634782 (1♀).

Hosts. Plantaginaceae  : Hebe speciosa (R. Cunn. ex A. Cunn.) J.C. Andersen ( Spencer 1981)  , Veronica arvensis  L., V. chamaedrys  L., V. officinalis  L., V. * peregrina  L., V. persica Poir., V.  * serpyllifolia L. Ours  are the first rearings from Veronica  in North America, but these and numerous other Veronica  species are used by Phytomyza crassiseta  in Europe ( Ellis 2016).

Leaf mine. ( Fig. 184View FIGURES 180–188) A narrow linear mine at the leaf margin, which may later widen and become blotch-like ( Spencer & Steyskal 1986). Frass is deposited in small black grains or occasionally in short strips.

Puparium. Slender, white or yellowish, with a conspicuous dark band running centrally along the ventral surface; formed within the leaf on the lower surface ( Spencer & Steyskal 1986). In at least one example we examined, the puparium was formed with its ventral surface against the upper epidermis.

Distribution. USA: CA, ID, *MA, *NC, NY ( Scheffer & Lonsdale 2018), PA ( Rosenfeld 2014), VA, WA; Europe. We have seen leaf mines in MD and ME (including a photograph submitted to, and Spencer (1969) reported a probable mine of this species from Canada (QC).