Calycomyza platyptera (Thomson)

Material examined. NORTH CAROLINA: Durham Co., Durham, Grandale Drive, 14.vii.2017, em. by 24.vii.2017, T.S. Feldman, ex Bidens aristosa, # CSE4007, CNC939842 (1♂).

Hosts. Asteraceae: Ambrosia artemisiifolia L., Artemisia ludoviciana Nutt., Bidens * aristosa (Michx.) Britton, Gamochaeta pensylvanica (Willd.) Cabrera, Helianthus annuus L., H. exilis A. Gray, Iva frutescens L., Mikania micrantha Kunth, M. scandens (L.) Willd., Silphium laciniatum L., S. perfoliatum L., Xanthium strumarium L. (Eiseman & Lonsdale 2018 and references therein; see that paper for discussion of other reported hosts that require confirmation).

Leaf mine. A whitish blotch, frequently toward the base of the leaf, with characteristic irregular offshoots; an initial short, linear portion is usually obliterated by the blotch. Frass is mostly deposited in a mass of coalescing pellets around the pupation site.

Puparium. Brownish, attached to a flattened lump of frass at the center of the mine.

Distribution. USA: CA, CO, FL, IA, KS, MA, MS, NC, OK; Cuba; Grand Cayman Island; Jamaica (Eiseman & Lonsdale 2018).

Comments. This specimen was listed by Eiseman & Lonsdale (2018), but the host was only listed as Bidens; TSF determined the plant species after the specimen was labeled.