[linguistics__]

It's also worth taking the "Life/dinner principle"[0] into account. If the termites fail to detect the beetle, then they might loose a tiny bit of food or whatever. While if the beetle fails to deceive the termites it might get killed or starve. Hence the adaptive pressure is probably higher for the beetle than for the termites.

0: The name comes from the example: the rabbit runs faster than the fox, because the rabbit is running for its life, while the fox is running for its dinner.

[achenet]

I'm not sure the "life/dinner principle" is always applicable.

A cheetah runs faster than a gazelle. And if you consistently fail to catch your dinner, you're probably going to lose your life.

[linguistics__]

The life/dinner principle doesn't work in absolutes, it just states that you would expect asymmetric evolutionary pressures from asymmetric stakes in interactions.