Froth among disc florets of Ragwort is a clue to its presence

Kuvaus:

Longitude (deg): -1.2. Latitude (deg): 51.4. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 30' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Larva. Associated species: Senecio jacobaea. Identified by: Malcolm Storey. Comment: in Ragwort capitulum with associated froth. Category: macro-photograph. Photographic equipment used: Pixera Pro tethered low-resolution digital camera with bellows and Olympus Zuiko 50mm macro lens.