Examples of Silphium-galling Antistrophus wasps and their galls A adult female A. jeanae Tooker & Hanks, 2004 B galls and larvae of A. jeanae in stem pith of S. perfoliatum L. C adult female A. silphii Gillette, 1891 D galls of A. silphii on terminal stem of S. integrifolium Michx E adult female A. laciniatus Gillette, 1891 F galls of A. laciniatus in disc flower of S. laciniatum L. adult gall wasps photographed by Antoine Guiguet. Galls photographed by Andrew R. Deans.

 
 
  Part of: Nastasi LF, Tooker JF, Davis CK, Smith CN, Frey TS, Hatfield MJ, Presnall TM, Hines HM, Deans AR (2024) Cryptic or underworked? Taxonomic revision of the Antistrophus rufus species complex (Cynipoidea, Aulacideini). Journal of Hymenoptera Research 97: 399-439. https://doi.org/10.3897/jhr.97.121918