<i>Iris yellow spot virus</i> on Shallot and Onion in France

Fig. 2. Symptoms of Iris yellow spot virus infection on onion plants observed at INRA Dijon, Bretenières, France: close up of lesions on leaves. Symptoms include elongated to diamond-shaped light green to necrotic lesions and straw-colored necrotic areas along the leaf margins with extensive spreading along the leaf leading to total necrosis starting near the leaf tip.

Image from Plant Health Progress article:
Iris yellow spot virus on Shallot and Onion in France