Visual prey categorization by a generalist jumping spider

Figures & data

Figure 1. Yllenus arenarius with its natural prey: A) fly, B) orthopteran, C) wasp, D) butterfly caterpillar.

Table I. The characteristics of images used in the tests: body length (short vs long); the presence of horizontal motion (images proceeding forward vs not proceeding); the type of global motion (crawling like a caterpillar vs moving without caterpillar-like crawls); the number of body details (0 vs 4 details, including head spot, legs, wings and antennae); the local motion of legs (legs moving vs legs still).

Figure 2. The setup used in Experiment 2 (details in the text).

Figure 3. The frequency of stalk in the experiments with horizontally-moving prey. The number of spiders performing stalk, the number of spiders that did not perform stalk and total number of spiders are given above each bar.

Figure 4. The frequency of frontal approach in the experiments with horizontally-moving prey. The number of spiders performing frontal approach, the number of spiders that did not perform frontal approach and total number of spiders are given above each bar.