Liriomyza eupatorii (Kaltenbach)

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 : 49-50

Liriomyza eupatorii (Kaltenbach)

( Figs. 30 , 140 )

Material examined. MASSACHUSETTS: Hampshire Co. , South Hadley, near Lithia Springs Reservoir , 11.v.2016, em. 27.v.2016, C.S. Eiseman, ex Symphyotrichum cordifolium , spiral mines, #CSE2505, CNC654242– 654244 (3♂) ; Nantucket Co., Nantucket, Squam Swamp , 12.vi.2013, em. 24.vi.2013, C.S. Eiseman, ex Solidago latissimifolia , linear mine with no spiral, #CSE598, CNC392714 (1♂) ; same data but mine beginning with a spiral, #CSE603, CNC392701 , CNC392702 (2♂) ; same collection data, em. 24–30.vi.2013, linear mine beginning with a spiral, #CSE601, CNC392939–392944 (3♂ 3♀); same collection data, em. 30.vi.2013, linear mine, #CSE624, CNC392715 (1♂); Nantucket, Coskata Woods, 12.vi.2013, em. 25.vi.2013, C.S. Eiseman, ex Baccharis halimifolia , contorted linear mine, spiral not evident, #CSE605, CNC392681, CNC392682 (1♂ 1♀); same data, linear mine beginning with distinct spiral, #CSE606, CNC422936–422942 (1♂ 6♀) ; Nantucket , UMass field station, 11.vi.2013, em. 30.vi.2013, C.S. Eiseman, ex Solidago altissima , linear mine (no spiral), #CSE617, CNC384819 , CNC384820 (2♂) ; same collection data, em. 25.vi.2013, linear mine beginning with a spiral, #CSE604, CNC384815 (1♀); Nantucket, Masquetuck, 11.vi.2013, em. 30.vi.2013, C.S. Eiseman, ex Baccharis halimifolia , linear mine, contorted but not beginning with a spiral, #CSE618, CNC358470 (1♂); Nantucket, Ice Pond Lot, 13.vi.2013, em. 3.vii.2013, C.S. Eiseman, ex Solidago latissimifolia , spiral, #CSE648, CNC392710 (1♂); OKLAHOMA: Payne Co., Mehan , 36.014339° N, 96.996744° W, 23.iii.2016, em. 14.iv.2016, M.W. Palmer, ex Symphyotrichum praealtum , #CSE2650, CNC653986 (1♂) .

Tentatively identified material. MASSACHUSETTS: Franklin Co., Northfield , 276 Old Wendell Rd. , 24.vi.2017, em . 7.vii.2017, C.S. Eiseman, ex Symphyotrichum lateriflorum , #CSE3906, CNC939662 (1♀); 28.vi.2017, em. 17.vii.2017, C.S. Eiseman, ex Symphyotrichum novae-angliae, #CSE3972, CNC939660 (1♀).

Hosts. Apocynaceae : Asclepias L. ( Lonsdale 2017); Asteraceae : Baccharis halimifolia L., Mikania micrantha Kunth , M. scandens (L.) Willd. ( Diaz et al. 2015), Solidago * altissima L. , S. canadensis L. ( Frick 1959), S. * latissimifolia Mill., Symphyotrichum chilense (Nees) G.L. Nesom ( Spencer 1981) , S. * cordifolium (L.) G.L. Nesom, S. * praealtum (Poir.) G.L. Nesom , S. puniceum (L.) Á. Löve & D. Löve ( Lonsdale 2017), Xanthium strumarium L. (Lonsdale 2011). It is unclear whether California specimens labeled “ Callistephus ” ( Asteraceae ) were reared or caught (Lonsdale 2011); a British Columbia specimen labeled “host: raspberry ” was probably not reared ( Lonsdale 2017). Our tentatively identified females were reared from Symphyotrichum lateriflorum (L.) Á. Löve & D. Löve and S. novae-angliae (L.) G.L. Nesom.

Leaf mine. ( Fig. 140 ) Whitish, upper surface; long, narrow and linear; often beginning with a distinctive spiral, but this is sometimes reduced to a minute contorted area, and sometimes there is no hint of it whatsoever. The black frass is mostly in distinct, alternating strips, sometimes devolving into irregular, squiggly fragments toward the end.

Puparium. ( Fig. 30 ) Yellow to dark brown; formed outside the mine. The three specimens collected together from Symphyotrichum cordifolium differed markedly in puparium color—bright yellow, pale orange, and orangebrown ( Fig. 30 )—and the difference was still evident after the adults had emerged.

Distribution. USA: CA, DE, GA, MA, MI, MS, MT, NC, NY ( Scheffer & Lonsdale 2018), *OK, PA, SC, TN, VA, WA, WV; Canada: AB, BC, MB, NB, NS, ON, QC, SK; Europe.

Comments. The records of Baccharis halimifolia and MA given by Lonsdale (2017) were based on specimens that were not cited in that paper and are reported here for the first time.

Figures

FIGURE 30–34. Figure 30: Liriomyza eupatorii (Kaltenbach), puparia. Figures 31–32: L. ivorcutleri spec. nov.; 31: puparium, 32: adult male. Figures 33–34: L. valerianivora spec. nov.; 33: puparia; 34: adult female.

FIGURES 133–143. leaf mines; 133: Liriomyza arctii Spencer in Ƒerbesina alternifolia; 134: L. asclepiadis Spencer in Asclepias exaltata; 135: L. baccharidis Spencer in Erigeron annuus, lower surface (left) and upper surface (right); 136: L. blechi Spencer in Plantago virginica; 137: L. brassicae (Riley) in Lepidium virginicum; 138: L. eupatoriella Spencer in Ageratina altissima; 139: L. eupatoriella in Ƒernonia baldwinii; 140: L. eupatorii (Kaltenbach) in Baccharis halimifolia; 141: L. fricki Spencer in Trifolium repens; 142: L. galiivora (Spencer) in Galium circaezans (transmitted light); 143: L. ivorcutleri spec. nov. in Silphium perfoliatum.