New state and host records for Agromyzidae (Diptera) in the United States, with the description of thirty new species Author Eiseman, Charles S. Author Lonsdale, Owen text Zootaxa 2018 2018-09-14 4479 1 1 156 journal article 29197 10.11646/zootaxa.4479.1.1 73cc6f7d-b3ec-40c5-adc7-52b9e0cbf236 1175-5326 1452913 93C84828-6EEF-4758-BEA1-97EEEF115245 Agromyza bispinata Spencer ( Fig. 66 ) Material examined. IOWA : Winneshiek Co. , Cresco , Cold Water Creek Rd. , 43°25'55.97"N , 92° 0'34.78"W , 16.vii.2015 , em . 7.viii.2015 , C.S. Eiseman, ex Elymus hystrix , #CSE1973, CNC564662 (1♂). Host. * Poaceae : Elymus hystrix L. Leaf mine. ( Fig. 66 ) In the single example observed, three eggs were inserted in a cluster in the basal portion of a leaf, near the middle, and the larvae mined distally, forming gradually widening tracks that eventually merged. In the young mines, black frass particles formed two rows, delineating a green central area; the margins of the mines were whitish. Puparium. Reddish-brown; formed outside the mine. Distribution. USA : GA, *IA, MD, NC, NY, UT, VA; Canada : ON. Comments. Spencer (1969) reported a broad, white mine, up to three inches long, produced by an unidentified Agromyza species on Elymus hystrix in Ontario . Otherwise, the only previous record of an Agromyza species on Elymus is that of A . ambigua Fallén (as A . niveipennis Zetterstedt ) from E. repens (L.) Gould (as Agropyron repens (L.) Beauv.) ( Frick 1959 ; Spencer & Steyskal 1986 ).