How insects move 



Fig. 51. Some water-bugs and water-beetles: a, a naucorid bug, which 

 creeps about on submerged vegetation, and has powerful grasping fore- 

 legs; b, a dytiscid beetle; c, a giant water-bug; d, a whirligig beetle, which 

 darts about on the surface; e, a water-boatman, a corixid bug that is a 

 very capable swimmer. Notice the various modifications of the legs for 

 swimming and for seizing prey 

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