86 
Ganl. Bull. Singapore 70 (Suppl. 1) 2018 
Fig. 7. Distribution and abundance of order Megaloptera 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. 
have a terrestrial lifestyle (Romoser & Stoffolano, 1994). Lepidopterans were mostly 
found in the northeast of the Nee Soon drainage, occasionally being found deeper 
within the swamp forest. They are relatively uncommon (recorded at six sites) and 
were found only in small numbers, with the most abundant site (site 31) having only 
four individuals (Fig. 6). 
Order Megaloptera 
Two families of Megaloptera were recorded from the Nee Soon freshwater swamp 
forest. The Megaloptera are also known as the dobsonflies, and are famous for the 
enormous mandibles which adult males from some genera possess (Cover & Resh, 
2008). However, in most species, the adult form does not feed at all, and it is theorised 
