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Figure 4


Fig. 4. Illustration of cricket-predator interactions in two contrasting habitats: (A) Temperate forest ground (France). The predation by wolf spiders (Pardosa sp.) on wood crickets (Nemobius sylvestris) takes place in the complex three-dimensional structure of the ground litter. The air flow produced by the spider is linear, coming from one direction. (B) Tropical cave wall (Gabon). Cave crickets (e.g. Phalangopsidae) are commonly preyed upon by whip spiders (Amblypygi sp.) in various tropical regions around the world (O.D., unpublished; Louis Deharveng, National Natural History Museum of Paris, personal communication). In contrast to A, this interaction occurs on a simple structure, the bare and flat walls of caves. The air flow produced by the two raptorial pedipalps of the whip spider comes from opposite directions. Cave pictures by Richard Oslisly/WCS Gabon.





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