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Science. 2011 Jul 1;333(6038):52. doi: 10.1126/science.1204245.

A biological screw in a beetle's leg.

Author information

1
ANKA-Institute for Synchrotron Radiation, Karlsruhe Institute of Technology, D-76344 Eggenstein-Leopoldshafen, Germany.

Abstract

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°.

PMID:
21719669
DOI:
10.1126/science.1204245
[Indexed for MEDLINE]
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