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

Protosticta khaosoidaoensis Asahina, 1984

This species was described by Asahina from Thailand, the name of the species specifies the locality of holotype.

They are green brow and elongate damselflies with very slim typical abdomen. The head is dark green with shining emerald green compose eyes. The labrum is bright white make it quite remarkable in dark of the forest. The round prothorax is same colour to the labrum in both dorsal and lateral sides. Their synthorax is shining green in dorsal side but it change to red brownish with white or cream yellow marking on lateral sides.  Their wings are hyaline with dark pterostigma, length of the wing is shorter haft of the abdomen. Their legs are dust white brow. The abdomen is round, long and slim with the segments are shining black at apical and white cream at base except two last segments. They are short and thick; the basal one is dull black white the apical one is cream white. The anal appendages of male are black.

This species has the same size to Protosticta santoi but they are difference in color of the body and structure of anal appendages.

The species was found in cleaning running water in pristine forests and distribute from North to South of Vietnam. The larvae of this species usually hide under dead leafs of the water.

They fly in the dark of the forests but never fly far away their breeding sides. Some time they were found at vegetation under waterfalls of rocky mountain in very high humidity condition. They fly slowly above dark vegetation layer just over the ground surface of the forests.

Male of P. khaosoidaoensis, photographed by Cuong Do

Male of P. khaosoidaoensis with bend upward abdomen, photographed by Cuong Do

Teneral female of P. khaosoidaoensis, photographed by Cuong Do

Atrocalopteryx fasciata Yang, Hamalainen & Zhang, 2014

The new species of very beautiful Caloptera damselfly was found from Yunnan, collected by the first author of the species, be confirmed by second and third author.

The new species is close to its related species Atrocalopteryx laosica that was recorded from Laos and Vietnam. They are easy separated by the differnce of wing color marking, A. laosica has darker wings while A. fasiata has clear part at wing apex and base.

Calopterygidae is one of the most colorful insect group among Odonata order, Matti Hamalainen (third author of the species) is the world expert of this group, Haomiao Zhang (the second author) is young actives odonatologist who interested in many groups of Odonata, he found many new species of Odonata from China.

Atrocalopteryx fasciata, holotype from the original description

Atrocalopteryx laosica, taken by Cuong Do in Sa Pa, Lao Cai Province, North Vietnam (29.VII.2006)