This matured female has white pruinescenc (powder) developed all over the body.

Segment 8, 9 and 10 stained with some dried mud particles indicating she has been dropping eggs on water.

An egg remain stuck infront the opening of segment 8 of this female Orthetrum glaucum. In the photo the egg seem round in shape but when view from another angle the egg is actually oval shape.

Unlike damselflies, most dragonflies do not have a fully formed ovipositor(i.e. without complicated structure containing paired valves and cutting blades) Thus a female Orthetrum glaucum simply drop her eggs into water.

體長44-50mm，

雄蟲複眼藍綠色，胸部藍灰色，腹部灰藍色具粉末，翅膀透明，翅基具少許褐斑，翅痣黃褐色。老熟雄蟲體色漸淡，

生活於平地至低海山區，常見於路邊溝渠、池塘等水域活動，棲息環境適應能力好，數量多。