What is the most reliable visual cue for identifying the spongy moth caterpillar?

Answer

Five pairs of blue dots followed by six pairs of reddish-orange dots

The defining characteristic distinguishing the caterpillar is the pattern of colored spots running along its back: five pairs of blue dots immediately followed by six pairs of reddish-orange or rusty red dots.

What is the most reliable visual cue for identifying the spongy moth caterpillar?
insectmothlarvapestcaterpillar