Aquatic macroinvertebrates of Nee Soon 
75 
Fig. 1 . The main drainage of the Nee Soon freshwater swamp forest, with 40 sites sampled 
from October 2013 to September 2014 for aquatic macroinvertebrates. 
are indicators of good water quality (Blakely et al., 2014). Previous studies of the 
insect fauna of the Central Catchment Nature Reserve (which includes the Nee Soon 
drainage) covered several different insect orders (Bailee et al., 1997; Murphy, 1997; 
Yang et al., 1997), which makes the insects among the better known groups of aquatic 
macroinvertebrates in the Nee Soon freshwater swamp forest. 
Order Diptera 
The order Diptera, or the true flies, is an enormously successful and diverse group 
of insects. There are currently 17 families of Diptera recorded from the Nee Soon 
drainage. Overall, the Diptera are common throughout the entire Nee Soon drainage, 
being found in nearly all 40 sites (Table 2). The family Chironomidae, which occur 
naturally throughout the Nee Soon drainage, are the most common family. Other 
