Thirteen new species of Agromyzidae (Diptera) from the United States, with new host and distribution records for 32 additional species Author Eiseman, Charles S. Author Lonsdale, Owen 0000-0001-7034-3330 onsdale@agr.gc.ca Author Linden, John Van Der 0000-0003-2651-0634 johnbvdl@gmail.com Author Feldman, Tracy S. 0000-0001-5939-6810 feldmants@sa.edu Author Palmer, Michael W. 0000-0003-1452-2152 mike.palmer@okstate.edu text Zootaxa 2021 2021-02-17 4931 1 1 68 journal article 7424 10.11646/zootaxa.4931.1.1 d63cab47-63f1-4fdc-9209-26a256c91ccb 1175-5326 4545337 88CF2B0D-E02B-46E1-9F52-1B95F717FC8F Liriomyza arctii Spencer Material examined. MASSACHUSETTS : Hampshire Co., Northampton , 42.318438 , -72.643259 , 1.vi.2018 , em. 19–21.vi.2018 , C.S. Eiseman , ex Silphium perfoliatum , # CSE4637 , CNC1144085–1144088 (3♁ 1♀ ) . Hosts. Asteraceae : Arctium lappa L., A. minus (Hill) Bernh. , Bidens cernua L., Heliopsis helianthoides (L.) Sweet, * Silphium perfoliatum L., Verbesina alternifolia (L.) Britton ex Kearney ( Eiseman & Lonsdale 2018 ). Leaf mine. Greenish, entirely linear; on Heliopsis and Verbesina , frass is diffuse throughout, whereas on the oth- er hosts, there are more or less distinct, black, alternating strips in the later portion ( Eiseman & Lonsdale 2018 ). Puparium. Yellow to brown (dark brown according to Spencer 1969 ), formed outside the mine. Phenology and voltinism. This species is multivoltine in the northeastern USA . We have collected larvae in early June, mid-July, early August, and late September, with adults emerging in 12–23 days in all cases except the last, when the pupae overwintered ( Eiseman & Lonsdale 2018 ). Distribution. Distribution. USA : CT, MA, MN, NY, OH, WI; Canada : ON ( Eiseman & Lonsdale 2018 ). Comments. This is the second Liriomyza species to be reared from Silphium , after L. ivorcutleri Eiseman & Lonsdale , which is known from a single Iowa specimen ( Eiseman & Lonsdale 2018 ).