Red Legged Shield Bugs

John C writes:

Watering my tomatoes the other evening, I came across this pair of red-legged shield bugs on one of the canes.

They’re not uncommon but the interesting thing is the two colour forms: one with a red spot, the other with a yellow one. As far as I know, the colours don’t distinguish male and female but are simply natural variations.

I haven’t found any eggs yet, but if I do I’ll keep an eye on them to see what colour spots the offspring have, although that might be difficult because the nymphs – apparently – overwinter and only emerge as adults the following spring!

A useful reference site is .

John Cobb 28 July 2022