82 
Ganl. Bull. Singapore 70 (Suppl. 1) 2018 
oprmf/jear jvaiure rarx u 
28 
N 
Upper Pejrce Map data 2017 Google 
Coleoptera 
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Fig. 3. Distribution and abundance of order Coleoptera 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. 
Soon freshwater swamp forest, the Coleoptera are not very evenly distributed, being 
found in several clusters throughout the swamp forest, including in the more upstream 
portions as well as the outskirts of the Nee Soon drainage (Fig. 3). They are relatively 
uncommon, being found in 26 sites. Of the 12 families recorded, the most common is 
the family Elmidae, which were recorded from 16 sites across the Nee Soon freshwater 
swamp forest (Table 2). The other 11 families were largely rare, occurring at one to 
four sites across the Nee Soon freshwater swamp forest. In general, their numbers are 
relatively low compared to other groups (Table 1), with the maximum abundance in a 
single site (site 24) being 14 specimens. 
