Scientific Name: Gynacantha dohrni
Common Name: Spear-tail Duskhawker
Spear-tailed duskhawker is a widespread but uncommon species of fairly large dragonfly which can be found in many swampy forested areas around the Central Catchment Nature Reserve, Bukit Timah Nature Reserves as well as in the secondary forests of Mandai, Kranji and Chestnut area.
It is a species that prefers dense and dark forest undergrowth, often around the vicinity of forest pools or streams where it hides in the shade and perch motionlessly on vertical twig during the day. It becomes active at dusk.
Male has green eyes and thorax. The auricles on the side of the 2nd abdominal segment are bright blue. It has a T-shaped marking on the top of the fron. Wings are mainly clear. Abdomen is dark with flecks of green markings. Male’s superior appendages are spear-shaped towards the tip, while the inferior appendage is short and pale in color.
Females generally are quite similar to males in term of color and markings. The wings are rounder and the appendages are often broken off due to mating or ovipositing. Females are found to breed in forest pools and sometimes they even ovipositing their eggs into rock, or mud crevices, from my observation.
This is one of the most common species of aeshnidae which can be found locally.
Lestes praemorsus decipiens is a member of the Lestidae family. A common name for this species is Crenulated Spreadwing.
This species is uncommon and can be found at large water bodies such as reservoirs and large ponds and wetland marshes. In Singapore, I have seen this species at MacRitchie Reservoir and Bukit Timah Nature Reserves.
The male has powdery light blue thorax with dark spots. The abdomen is dark and shaped like a hockey stick. Aged males are heavily pruinosed.
They typically rest with their wings at an angle away from their bodies and half open. They usually perch on vertical stems of water plants with their abdomen hanging downwards.
Scientific Name: Agriocnemis nana
Common Name: Dwarf Wisp
This tiny damselfly is the smallest damselfly in Singapore. It is found in grass marshes in open forests, small streams and vegetation around edges of the central catchment reservoirs. It is very rare and localised in Singapore. The only places where I have found this species is at the water edges of the MacRitchie reservoir.
The male has a blue thorax with black strips and blue abdomen. The labrum is blue and the pterostigma is bluish-white.
The female is more colourful with green-yellowish thorax and blue abdomen. The pterostigma is pale brown.
I have only seen this species on just two to three occasions at the MacRitchie reservoir. Hope this species still survives as I have not seen it for quite a long time.
This is a moderately large and rare dragonfly which inhibits slow flowing streams near swampy forest in the Central Nature Reserve of Singapore. This species can be seen flying swiftly along forest trails or hanging from high branches at MacRitchie Reservoir.
This species has brilliant bluish-green eyes. There is a conspicuous white saddle cutting across the dorsum of the thorax of both sexes. Both sexes has dark patches at the base of the wings.
From my observance, this species tend to be more active in the late morning to early afternoon. You’ll need to have good sharp eyes to locate them as they tend to hang motionlessly on twigs or high branches.