Scientific name: Stylogomphus sp.
Habitat: woodland stream
Body length: abdominal length 31-32 mm
Distribution in Hong Kong: Small Clubtail mainly found in Central New Territories, e.g. Yuen Tun Ha; Stylogomphus species indeterminata found in Lantau Island, e.g. Tei Tong Tsai
Flight period in Hong Kong: May to August
1. Two yellow stripes at two sides of synthorax respectively, with small yellow spot in between for species found in Hong Kong
2. Superior anal appendage white, with the end bending upward in male