Thailand, Malaysia &
Family - HESPERIIDAE
The genus Pirdana is
endemic to the Oriental region and comprises of 4 known species,
distanti and fusca, the last of
these being discovered as recently as 1983.
All Pirdana species
have dark uppersides with a metallic bluish-green sheen, and
golden-yellow scales around the tornus on the hindwings.
Additionally they all have deep ruby eyes.
The commonest and most widespread species is
hyela which is found from Myanmar to
Sulawesi. P. albicornis is endemic to
Borneo, and fusca is endemic to Samar
in the Philippines.
is found in West Malaysia, Sumatra and Borneo.
This is a very rare species which is confined to
primary rainforest at altitudes between about 100-300 metres. The
individual depicted above was photographed in dark swampy forest
near Kuala Tahan in Taman Negara national park.
The only details I have of the early stages are
that the larva is "green with black markings" and feeds on
Cordyline ( Agavaceae ).
The butterflies are probably mainly crepuscular
in habit. The butterfly depicted was disturbed from rest in the late
afternoon. It had a rapid whirring flight and was very alert and
difficult to approach - while attempting to follow it I managed to
trip over a tree root, slide down a slope into a muddy pool, and
gather a few cuts and bruises, losing sight of the butterfly on
several occasions !
distanti, Taman Negara, West