Giant River Hawker

Scientific name: Tetracanthagyna waterhousei

Habitat: woodland stream

Body length: 75-87 mm

Distribution in Hong Kong: Mainly in north New Territories, e.g. Sha Lo Tung, Hok Tau, Bride’s Pool 

Flight period in Hong Kong: April to September

Identification features: 

1. Mesepisternum with an inverted “/ \”-shaped yellow stripe

2. Synthorax and abdomen dark brown