A revision of the North American Pachygasterinae with unspined scutellum (Diptera)
Published in Ann. Ent. Soc. Amer, in 1915, in volume 8, pages 305-320
Date published:1915
Published in Ann. Ent. Soc. Amer, in 1915, in volume 8, pages 305-320
Date published:1915