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Design of the predatory legs of water bugs (Hemiptera: Nepidae, Naucoridae, Notonectidae, Gerridae) by Stanislav N. Gorb is a Environmental Science article available to read on EtoBox.

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## Abstract Functional comparative morphology of predatory legs in five species of water bugs (__Ilyocoris cimicoides, Nepa cinerea, Ranatra linearis, Notonecta glauca__, and __Gerris lacustris__) has been investigatd adn the following peculiarities of leg design were revealed. Subcoxal articulation may be monoaxial (__G. lacustris, N. glauca__), or, in contrast to walking leg type, biaxial (__N. cinerea, R. linearis, I. cimicoides__); the first axis is oriented along the coxa (__torsion axis__), the second one is perpendicular to the first (__non__‐__torsion axis__). In contrast to walking leg type, which is characterized by cross suspension of the axis of coxal rotation in thoracal skeleton, this axis in __G. lacustris__ is placed vertically. Non‐torsion coxal axis in __R. linearis__ is oriented strongly transversal. This axis directs the leg strike forward. Legs in the majority of species are planar: Torsion axes of the coxa, femur, and tibia are placed in the same plane. Axes of rotation of consequent joints in __I. cimicoides__ are reciprocally sloped. Therefore, the end of the leg outlines the spiral trajectory, when all angles of joints are opening (closing). This is an adap

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Author

Stanislav N. Gorb

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0362-2525)

Published

1995

Language

EN

Field

Environmental Science (Physical Sciences)