Corixa species
Lesser Water boatman, hind leg, detail
This is the joint between the tibia and the tarsus (foot) of the hind leg of a
Corixa species. At left the tibia, with large sharp thorns and a thin fringe of hairs. On the joint
the tibia is equipped with a sort of little comb. What is the purpose of that? To keep the joint
clean perhaps? It could be an acceptable explanation regarding the white mass of Protozoa (possibly
Opercularia articulata). What about the large thorns - to discourage predators maybe? But
large fish are not easily frightened and like to snack on the little Lesser Water boatman... On the
right the implant of the double fringe of hairs is visible.
back to: Corixa, structure, hind leg
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rev 05-08-2006
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