Giant Hooktail

Scientific name: Megalogomphus sommeri

Habitat: stream with sandy substrate

Body length: 78-80 mm

Distribution in Hong Kong: Scattered over Hong Kong, e.g. Sha Lo Tung, Hok Tau, Sham Tseng, Wong Nai Chung Gap

Flight period in Hong Kong: April to August

Identification features: 

1. Stripes on synthorax disconnect 

2. Yellow stripe on dorsal carina

3. Yellow spot on pro- and mesofemurs

4. Large yellow spot between 6th and 7th abdominal segment

5. Length of superior anal appendage able to be over double of the 10th abdominal segment in male