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Blue-spotted Dusk-hawker
Scientific name: Gynacantha japonica
Habitat: pond and stream with canopy cover
Body length: 68-76 mm
Distribution in Hong Kong: Mainly in north New Territories, e.g. Sha Lo Tung , Pat Sin Leng, Wu Kau Tang
Flight period in Hong Kong: May to December
Similar species: Ryukyu Dusk-hawker, Dingy Dusk-hawker
Identification features:
1. Mesepisternum without apparent stripes
2. Dorsum of synthorax near the base of forewings with a pentagonal spot
3. Abdomen slender
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