Thigh ring

The thigh ring (B) as the second link of the insect leg.

The thigh ring (trochanter) is a link in the leg of arthropods that lies between the hip ( coxa ) and the thigh ( femora ). It is usually a small, triangular sclerite when viewed from the side .

The connection to the hip is always dicondylar, i.e. it has two joints, which are anterior and posterior . In the center of the base of the femoral ring is a well-developed apodeme that extends into the hip. At the other end of the leg ring there is a connection that is inclined or transverse to the leg, which is not a real joint but, if at all, is only minimally movable.

The thigh ring can have two designs: the trochanter compositus , consists of two parts, the subtrochanter and the posttrochanter and is movable; the trochanter simplex , however, consists of a single ring.

Individual evidence

1. ^ ^{A b} Rolf G. Beutel, Frank Friedrich, Si-Qin Ge, Xing-Ke Yang: Insect Morphology and Phylogeny . 1st edition. de Gruyter, Berlin / Boston 2013, ISBN 978-3-11-026263-6 , pp. 249 f . (English).
2. ^ ^{A b} Rolf G. Beutel, Frank Friedrich, Si-Qin Ge, Xing-Ke Yang: Insect Morphology and Phylogeny . 1st edition. de Gruyter, Berlin / Boston 2013, ISBN 978-3-11-026263-6 , pp. 39 f . (English).