Rhinocypha fulgipennis Guérin-Méneville, 1831

This species is a colorful wings damselfly that belong to Chlorocyphidae family, the genus name maybe because of its structure of the face with a object that is prominence forms a rhino face shape.

The small species is one of the most early species that was described as a new species for science from Vietnamese fauna of Odonata. The holotype was collected from South Vietnam with note as Cocochina area. Recently, this species has been found also from Cambodia and Laos.

They are very sensitive species that found near that clean running water (waterfalls, streams) of shadowed forests in low land areas. In a quick observation, this species is easy to misidentified with another common species, the species Rhinocypha fenestrella. However they are clearly difference in color and color marking of the wings.

Lateral view of male of Rhinocypha fulgipennis, photographed by Cuong Do

Orolestes octomaculatus Martin, 1902

R. Martin described this species in 1902, its name specify eight dark spots on two pairs of wings (octo = eight, maculatus = spots). It is a medium-large sized damselfly and like other lestid, it opens the wings at rest. Though being quite large, the species is elongate with a long abdomen. The body is greenish with somehow yellowish marking. Last segments of the abdomen are blue on dorsum. Male and female of the species are dimorphism. The wings of male are hyaline with two distinct dark spots on each, these characteristics are absent in female individuals. However, wings of teneral males some time are hyaline. They inhabit in unshaded dust still waters (ground pools) in lowland forests. They fly weakly and hide in bushes or vegetations above water surface about 1-2m high.

Male in dorsal view, photographed by Cuong Do, Cat Tien National Park, Dong Nai Province

Male in lateral view, photographed by Cuong Do, Cat Tien National Park, Dong Nai Province