Orange Tip larva 1st June 2023

[Jack Harrison]

Caterpillar is 12 mms long.  What is the reason for the tiny globules on the caterpillar's "spikes"?  They show quite sell in this back-lit image.
Click on image to enlarge.

Photo information.  Panasonic Lumix FZ150 Bridge camera.  Focal length at max [telephoto], screw-on close up lens +2 dioptre achromatic. 
Achromatic means two pieces of glass of different refractive index stuck together to minimise distortion.

Jack