Zyxomma petiolatum (Dingy duskdarter)

Habitat: larvae found in slow flowing waters e.g. ponds

General appearance: body medium sized, up to 17mm long; abdomen elongated with pair of white markings on abdominal segment IX; dorsal spines on abdominal segments IV - X (tiny on S10) and lateral spines on abdominal segments VIII - IX with pale tip