Butterflies Galore! : Sumatran Sunbeam

Butterflies Galore!
The Sumatran Sunbeam (Curetis saronis sumatrana)

The Sumatran Sunbeam is one of two species of the genus Curetis that exists in Singapore. Although other species were recorded before, they remain elusive and besides the Malayan Sunbeam (Curetis santana malayica) the other species recorded by the early authors have not been reliably identified yet.

The Sumatran Sunbeam is usually found in the mangrove habitats in places like Sg Buloh Wetland Reserve, Pasir Ris Park Mangrove swamp and Pulau Ubin. It is a fast flyer, and females are more often seen than the males of this species. The Sumatran Sunbeam has a habit of flying rapidly, then perching on the underside of a leaf to hide. Two weekends ago, ButterflyCircle member Chng CK managed to capture a shot of this species, perched on the underside of a leaf with its wings folded upright.

Butterflies Galore! : White Banded Flat

Butterflies Galore!
The White Banded Flat (Celaenorrhinus asmara asmara)

A colony of the White Banded Flat was re-discovered in Singapore by Nelson Ong and Yiming some time back in Feb 2011. Until then, it had been assumed that this species, recorded in the checklists of the early authors, was extinct. The surprising find ensured that the White Banded Flat would be re-instated to the Singapore Checklist once again.

Last week, ButterflyCircle member Sunny Chir shot the White Banded Flat at its very local hideout. We are glad to know that the colony still thrives and does not appear to be in danger of disappearing just yet. But its existence in the Singapore butterfly list remains highly threatened.

Life History of the Malay Lacewing v2.0

Life History of the Malay Lacewing (Cethosia hypsea hypsina)
An earlier version of the life history of the Malay Lacewing can be viewed by clicking this link.

Butterfly Biodata:
Genus: Cethosia Fabricius, 1807
Species: hypsea Doubleday, 1847
Subspecies: hypsina C. & R. Felder, 1867
Wingspan of Adult Butterfly: 60-80mm
Caterpillar Local Host Plant: Adenia macrophylla var. singaporeana

A female Malay Lacewing showing its underside.

A female Malay Lacewing showing its upperside.

Physical Description of Adult Butterfly:

Above, the forewings are black with a white subapical band beyond the cell; the basal area is orange-red for the male (with the red confined to the base of the wings) and black for the female (with a yellowish-white patch in mid space 1b). The hindwing is entirely orange-red (paler in the female) except for the scalloped black distal border. Underneath, the wings are orange-red with white fasciae and adorned with black spots. The forewing cell has several black-edged, pale blue transverse stripes. The wing borders are dark coloured and deeply indented with lace-like pattern of white markings. One distinguishing feature to separate Malay Lacewing from other Cethosia species is the absence of a white submarginal band on the hindwing underside.

A male Malay Lacewing showing its underside.

A male Malay Lacewing showing its upperside.

Field Observations of Butterfly Behaviour:

The Malay Lacewing is essentially a forest dweller and its local occurrence is confined within the sanctuary of the nature reserves in the catchment areas. It is not uncommon in the reserves, and adults can be spotted visiting flowers of flowering plants such as Leea indica in forest clearings or alongside forest trails. At times, females can also be seen checking out leaves of various plants in search of an ovipositing site.

Down Memory Lane - Singleton

Down Memory Lane
The Singleton (Una usta usta)

This small butterfly, known as the Singleton, was recorded in the checklists of the early collectors and the authors of the two main reference books on butterflies of Malaysia and Singapore. The male of the Singleton is deep brownish purple above, whilst the female is lighter but has a broad border on both wings. The underside is pale buff brown with prominent black spots on both wings.

It is not known why the butterfly disappeared from Singapore, or when it did. It is reported that the Singleton is nowhere considered common, even in Malaysia. However, on ButterflyCircle members' trips up north, males of this species are quite regularly encountered puddling on damp riverbanks. In looking back at the numerous butterfly surveys in Singapore, starting in the early 1990s, no one has thus far seen the Singleton. Will it be back here again one day? Or will it remain only in our memories and is gone forever from Singapore?

Butterflies Galore! : Orange Emigrant

Butterflies Galore!
The Orange Emigrant (Catopsilia scylla cornelia)

Amongst the three species of the genus Catopsilia in Singapore, the Orange Emigrant gets my vote for being the prettiest of the three. Fast-flying and erratic in flight, this Pierid is common and more so whenever its caterpillar host plants, Senna fistula and Senna surattensis are cultivated. The underside of the Orange Emigrant is orange-yellow with brown markings. The upperside of the forewings is white with black borders whilst the hindwings are orange-yellow.

This Orange Emigrant is feeding on the flower of the Lantana, an all-time favourite nectaring plant for butterflies. The pink variety, shown here, is less popular with butterflies compared to the orange and red varieties. The proboscis of the butterfly can be seen coated with pollen from the stamens of the flower. Butterflies are good pollinators of flowering plants when they go about feeding on nectar from the flowers.

Butterflies Galore! : Spotted Black Crow

Butterflies Galore!
The Spotted Black Crow (Euploea crameri bremeri)

The subfamily Danainae, often referred to by their collective English Common name of "Tigers and Crows" display aposematic colouration as a warning to predators that they are distasteful and should be avoided. One such species, the Spotted Black Crow is predominantly black in colour, with typical white spots on its wings which is characteristic of several species of the Euploea genus.

This Spotted Black Crow, shot last weekend, kept returning again and again to the flowers of the Stringbush to feed, even when disturbed. A moderately rare species, the Spotted Black Crow is often observed on the landward side of mangrove areas in Singapore. Its caterpillars feed on Apocynaceae plants which are lactiferous. It is the chemical compound in the host plant that gives the adult butterfly its distasteful properties.

Butterflies Galore! : Peacock Pansy

Butterflies Galore!
The Peacock Pansy (Junonia almana javana)

The Peacock Pansy is one of four Pansies found in Singapore. Sun-loving butterflies, all the four belong to the genus Junonia, of which there are six species in the Southeast Asian region. Two of them, the Lemon Pansy and the Yellow Pansy are not found this far south. In flight, the Pansies are fast on the wing and adopt a rapid gliding flight.

The Peacock Pansy is predominantly orange with large eyespots adorning both wings. The underside is paler with the same markings and ocelli as the upperside. The caterpillars of this species feed on the Creeping Ruellia (Ruellia repens). The species is fairly common and usually found in open grassy areas. This perching Peacock Pansy was shot by ButterflyCircle member Nona Ooi last weekend.