Image

Idionyx yolanda Selys, 1871- female

Family: Corduliidae
Scientific Name: Idionyx yolanda
Common Name: Shadowdancer

Idionyx yolanda is a small and lightly built dragonfly inhabiting forest streams and swamps in the nature reserves. Although rare, it can be found in most forested areas such as Upper Peirce Reservoir, Upper Seletar Reservoir, MacRitchie Reservoir, and Bukit Timah Nature Reserve.

This female was found perching on a twig near to a forest stream at the Dairy Farm Nature Park.

IMG_8384.2015.6.15
Female Idionyx yolanda. Side view. Very prominent yellow lateral band on it’s thorax.
IMG_8397.2015.6.15
Green eyes and dark and thin abdomen.
IMG_8428.2015.6.15
Dorsal view. This is an aged female.
Advertisements
Image

Lesser Stream Cruiser (Macromia cydippe) Laidlaw, Male & Female

Family: Corduliidae (Emeralds)
Scientific Name: Macromia cydippe
Common Name: Lesser Stream Cruiser

Macromia cydippe is very rare in Singapore. My sighting of this species is mainly concentrated at the Central Catchment Nature Reserve.

Here is the male and female taken at the MacRitchie Reservoir.

Female lesser stream cruiser. Notice the prominent white spot at the base of 7th segment of the abdomen. Female is slightly more robust than the male.

Image

Idionyx yolanda Selys, 1871

Family: Corduliidae
Scientific Name: Idionyx yolanda
Common Name: Shadowdancer

 

This small and lightly build dragonfly is quite rare and localised in the Central Catchment Nature Reserve of Singapore. They inhabits in small forest streams in the nature reserve. It is listed as critically endangered species in the Singapore Red Data Book. So far, I have only encountered this species a couple of times at the forests at Upper Seletar Reservoir, MacRitchie Reservoir, and Upper Pierce Reservoir.

The eyes are brilliant green. The thorax are short and compact, metallic green, with yellow lateral band. The anal appendages are very distinctive, the inferior being long, trifurcated towards tip.    There are yellow patches at the base of the wings.

Males and females are similar in appearance. Due to their small in sizes and greenish-black in colour, it is not easy to spot them in the forests. Occasionally, this species is observed flying erratically, non-stop, over a small area in the forest.

Adult Male
Adult Male
Adult male in side view.
Adult male in side view.
Female
Female
Female in partial dorsal view.
Female in partial dorsal view.
Male with close-up thorax.
Male with close-up thorax.
Male with close-up anal appendages.
Male with close-up anal appendages.
Image

Macromia cydippe Laidlaw, 1922 – female

Family: Corduliidae (Emeralds)
Scientific Name: Macromia cydippe
Common Name: Lesser Stream Cruiser

The female of Macromia cydippe is extremely rare, and I believe, has never been recorded in Singapore. In October 2013, I chanced upon a female of this species perched on a branch about 2 metres away from the ground at MacRitchie Reservoir. Immediately I knew that this could be the rare M.cydippe from the distinct whitish band on it’s abdomen.

The eyes of this female appeared to be greyish, the band is more whitish than yellowish and the pair of front wings is tinted with brownish patch.

Female Macromia cydippe
same female, this time perching quite high up on a branch
IMG_0979.2013.10.3a
Side view. Notice the striking wide stripe at the thorax and the whitish band at segment 7 of the abdomen

Apparently, the female was waiting to mate with the male as I have also seen at least one male perching near to where the female was found.

From my observation, this species is quite widespread but very localised in Singapore. So far, it has been sited at a few locations such as NSSF, MacRitchie Reservoir and Venus Drive.

Image

Macromia cydippe Laidlaw, 1922

Family: Corduliidae (Emeralds)
Scientific Name: Macromia cydippe
Common Name: Lesser Stream Cruiser

Macromia Cydippe is a very rare dragonfly species in Singapore. It was first recorded at Nee Soon Swamp Forest on 3rd January 2010. It is a forest species which prefers sluggish and clean-bottomed streams.

M.cydippe and M.cincta are both very similar in appearance. M. cydippe is characterised by it’s smaller size, more slenderer body, and a distinct yellow band at the base of the 7th abdominal segment. The inferior appendage of the male M. cydippe is much longer than it’s superior appendage.

I have seen this species, usually males, a couple of times at NSSF and MacRitchie Reservoir. Similarly to M. Cincta, this species like to perch motionlessly on twig just slightly above eye level.

This is the same male as in the main picture. It should be an adult male with shining blue abdomen and partly blue and brown patches at the top of the synthorax.
A young male perch on twig at eye level in Nee Soon Swamp Forest
Another male perched motionlessly on a thin branch beside the board walk in the sime forest.
IMG_0021.2013.10.3S
Lateral view of the above male
Image

Macromia cincta Rambur, 1842

Family: Corduliidae (Emeralds)
Scientific Name: Macromia cincta
Common Name: Stream Cruiser

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.

I think this should be a younger male as the eyes are more dull and the white markings on the thorax and abdomen are more striking.
Same male - side view. Less extensive dark patches on the wing base, and long hind legs.
Same male – side view. Less extensive dark patches on the wing base, and long hind legs.
This is an older male individual. The body is more purplish in colour, and eyes are brilliant green.
Older male – dorsal view
This is a female individual with similarly green eyes and slightly more extensive dark patches on the wing base. Females tend to be more rarer than males.

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.

Image

Epophthalmia vittigera (Rambur, 1842)

Family: Corduliidae (Emeralds)
Scientific Name: Epophthalmia vittigera
Common Name: Pond Cruiser

Pond cruiser is a large species of dragonfly in the Corduliids family. It is commonly found in the swamp forests in the Central Catchment Nature Reserve, and Bukit Timah Nature Reserve.

This large dragonfly has brilliant blue-green eyes and dark purplish body. There are strong yellow markings on the thorax and abdomen.

Male
Male
Male
Male
Male - side view
Male – side view
Female
Female

I often seen these dragonfly species constantly on the wings, flying non-stop, patrolling a stretch of the swamp forest. When they do rest, typically, they hang vertically on high tree branches.

A mating pair perch high up on a tree branch
A mating pair perch high up on a tree branch
This individual is unique as it has more yellow markings than the common ones. It's abdomen is also much slimmer. Initially, I thought it could be another sub-species of Epophthalmia vittigera. I published this photo at the Asia dragonfly site and ask for verification. They identified it as E vittigera vittigera
This individual is unique in the sense that it has more yellow markings on it’s abdomen than the common ones. It’s abdomen is also much slimmer. Initially, I thought it could be another sub-species of Epophthalmia vittigera. I published this photo at the Asia dragonfly website and ask for verification. It was identified as E vittigera vittigera. I was quite puzzle as it’s general appearance and markings does not quite match with the common E. vittigera.