Figure 2 in Neurobiology and vision of jumping spiders (Araneae: Salticidae)

Figure 2. Semi-schematic views of the CNS exposed in a dissection of the prosoma of Phidippus jumping spiders. 1, Adult female Phidippus clarus Keyserling 1885. The optic nerves of the anterior medial eyes (AME) lead directly to the rear, to the AME neuropiles I and II at the top of the CNS. Below these are the wide optic nerves of the anterior and posterior lateral eyes (ALE and PLE, respectively), and the small optic nerves of the posterior medial eyes (PME). In most salticids the PME are small as shown here, but in some they are much larger. The fused opisomal ganglia (CE, or cauda equina) lie at the rear of a suboral, ventral mass of fused pedipalp and leg ganglia. 2, Visual fields of the respective eyes. The PLE have wide fields of vision, the ALE much narrower fields that overlap in front of the spider. The tubular AME have narrow fields, but are moved up and down and side to side to scan a larger field. After Hill (1975, 2006).