Scientific name: Aciagrion approximans

Habitat: small pond, marsh

Body length: 28-31 mm

Distribution in Hong Kong: Pat Sin Leng, Tuen Mun

Flight period in Hong Kong: May to October

Identification features (male): 

1. Synthorax bluish purple

2. 3 black stripes at dorsum of synthorax

3. The 8th to 9th abdominal segment bluish purple

Identification features (female): 

1. Synthorax yellowish green

2. 3 black stripes at dorsum of synthorax

3. The whole 10th abdominal segment yellow