1. The chironomid larvae are an important food source for many fish species. （Chironomid 恐懼嚇退劑所有的昆蟲孤獨飛行, 幾乎是動彈不得。）

2. The increase in chironomid populations in the lake is a sign of pollution. （Three genera not previously recorded from Australia, including the large dark-winged Predimedion Finlay, are listed.）