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 Cerodontha (Butomomyza) sp. 1 ( Fig. 23 ) Material examined. MASSACHUSETTS : Franklin Co. , Northfield , 276 Old Wendell Rd. , 10.viii.2016 , em. 22.viii.2016 , C.S. Eiseman , ex Scirpus cyperinus , #CSE2931, CNC659963 ( 1♀ ) . Host. Cyperaceae : Scirpus cyperinus (L.) Kunth. Leaf mine. A yellowish, elongate blotch, typically occupying the space from the leaf margin to the midrib; frass in a few large, black lumps. Puparium. ( Fig. 23 ) Whitish to yellowish, broader in the anterior half and tending to taper posteriorly; strongly segmented; most segments with a black, elliptical patch on the ventral surface, these patches usually uniting to form a continuous ventral band with lobed margins. The puparium is firmly glued within the mine, usually roughly perpendicular to the leaf venation; typically two or more puparia lie side by side. Distribution. MA; we have also collected leaf mines in VT. Comments. The host, mines, and puparia all seem to match Cerodontha scirpivora Spencer , described from Ontario ( Spencer 1969 ), but our single female keys to C. angulata . That species, however, forms a narrower, whitish mine, and its puparium is quite different, being compact and smooth (not deeply segmented), typically reddish-brown or darker, without black ventral markings, and either formed externally or loose within the mine, rather than firmly glued in place. Cerodontha (Butomomyza) sp. 1 is heavily parasitized in our experience; our three collections thus far have yielded 22 wasps ( Braconidae and Eulophidae ) and a single fly.