Agromyza nigripes - Leaf-mark Coll. Friedrich Ludwig Stellwaag. Host plant: Medicago sativa (Papilionaceae) - Parasite: Agromyza nigripes (Agromyzidae) – Location: Janikow, Pommern, 28.VIII.1919, leg. Kleine, being processed by Gisela Schadewaldt. © Klaus Rassinger (Museum Wiesbaden) - CC BY-SA 4.0 - Wikimedia Commons