Aquatic macroinvertebrates of Nee Soon 
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Fig. 11. Distribution and abundance of subclass Acari in the Nee Soon drainage. Solid circles 
indicate sites where representatives were collected and circle sizes are proportionate to 
abundance/numbers of individuals captured as reflected in the accompanying legend. 
Order Araneae 
The Araneae are the arachnids most familiar to most people, as they comprise the 
familiar spiders. The aquatic spiders present in the Nee Soon freshwater swamp 
forest tend to remain on the water surface, attacking fish, aquatic insects and small 
crustaceans that venture too close to them (Ng et al., 2011). Aquatic spiders in the Nee 
Soon drainage are uncommon, and can be found distributed across 22 sites throughout 
the entire drainage of the swamp (Fig. 12). The highest number of individuals found 
in a single site (site 22) was six. 
