Scientific name: Palpopleura sexmaculata sexmaculata

Habitat: marsh

Body length: 24-27 mm

Distribution in Hong Kong: Mainly in north New Territories and Lantau Island, e.g. Tan Shan River, Luk Keng

Flight period in Hong Kong: April to October

Identification features (male):

1. Pterostigma mainly white, surrounded by black

2. Abdomen pruinose blue, flat and broad, eclipse, oval 

Identification features (female):

1. Synthorax and abdomen mainly yellow

2. Pterostigma mainly white, surrounded by black

3. Abdomen flat and broad, oval