Johann Georg Haag-Rutenberg

Johann Georg Haag-Rutenberg (10 October 1830 Frankfurt am Main – 20 November 1879 Frankfurt am Main) was a German entomologist, lawyer and farmer, who was also an authority on the Coleoptera. His acronym is Haag.

His Coleoptera collections are kept at the following places -
 * Melolonthidae 1878 via G. Metzler 1880 at Dt. Ent. Inst. Berlin
 * Tenebrionidae and various Heteromera ex parte 1880 via Clemens Müller 1903 at Zool. Staatsslg. München
 * Erotylidae and Languridae 1880 via E. Fleutiaux at Neervoort van de Poll
 * Coccinellidae, Chrysomelidae, Cetoniidae and duplicate Heteromera 1880 via G. Kraatz 1909 at Dt. Ent. Inst. Berlin
 * Buprestidae 1880 at F. Baden, 1934 via A. Théry at Mus. Nation. Hist. Nat. Paris
 * Meloidae 1880 at Mus. Hist. Nat. Belg. Brüssel
 * Cerambycidae at Witte/Breslau
 * Tenebrionidae ex parte at Mus. civ. St. nat. Genova