That's really interesting! I have never noticed that.. Thanks for this piece of into >o<Just for additional info, to differentiate, a boatman tends to have a wider head with wider, more ovalisk eyes and a pointed, beaklike protrusion between them. A backswimmer often has a head thinner than its thorax, and is therefore not flush with it. Their "paddle" legs are commonly the third pair whereas those of the boatman can be the second.
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