The 3D reconstruction [(A) to (E)] of coxa (green) and trochanter (yellow) of left hind leg of T. oblongus.
Forschung // 29. Juli 2011
A Biological Screw in a Beetle’s Leg
The coxa-trochanteral joints on the legs of the weevil Trigonopterus oblongus (Pascoe) work as a biological screw-and-nut system. The apical portions of the coxae closely resemble nuts with well-defined inner threads covering 345°. The corresponding trochanters have perfectly compatible external spiral threads of 410°.
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