Biology
Antistrophus meganae induces inconspicuous, externally imperceptible galls in stems of Silphium terebinthinaceum (Fig. 6H) (Tooker et al. 2004; Nastasi and Deans 2021).

Distribution
Tooker et al. (2004) reported this species only from several prairie sites in Illinois (USA). Nastasi and Deans (2021) did not report additional localities; however, the specimens we examined revealed novel records from Wisconsin (Suppl. material 1: table 1). We also sequenced DNA barcodes for individuals from Ohio (Suppl. material 1: table 6), and a series of specimens identified using the key represents a new state record from Michigan (see Discussion; Suppl. material 1: table 1). Known and potential distribution are summarized in Fig. 9.

- Louis F. Nastasi, John F. Tooker, Charles K. Davis, Cecil N. Smith, Timothy S. Frey, M. J. Hatfield, Tara M. Presnall, Heather M. Hines, Andrew R. Deans: (2024) Cryptic or underworked? Taxonomic revision of the Antistrophus rufus species complex (Cynipoidea, Aulacideini)^©