Flora index
Fauna index
guide to the mangroves of singapore
Peter K L Ng and N Sivasothi (editors)
Pneumatophore moth
Hymenoptychis sordida
Family Pyralidae

Adult wingspan:
25 mm

One of several common long-bodied moths with varying colour patterns.
close-up of larva

Moths resting on pneumatophore
close-up of adult on root
Dorsal view

close-up of adult on root
Ventral view

Usually resting on pneumatophores, and under leaves of intertidal seedlings, they scatter as you walk through the mangrove.

The pattern of emergence of the short-lived adult (in laboratory conditions averaging three days) of H. sordida appears to correlate to the tide—peaking during neap tides and subsiding during springs. It lays a clutch of 70-190 eggs.

The larvae are ground feeders taking Avicennia fruit, dead leaves, roots and rotting timber. They build silken tunnels in which they remain when the tide rises.
close-up of pinned adult showing long body
Adult, pinned specimen

close-up of adult on a leaf
Adult, underneath leaf

view of mangrove floor with seedlings and pneumatophores
Habitat is forest floor
covered with Avicennia
seedlings and pneumatophores
What is mangrove?

The Ecosystem


Indirect uses
Potential uses

About Mangroves
in Singapore

Mangroves to visit
From "A Guide to Mangroves of Singapore", Peter K. L. Ng and N. Sivasothi (editors)
Volume 1: The Ecosystem and Plant Diversity and Volume 2: Animal Diversity
Authors: Kelvin K. P. Lim, Dennis H. Murphy, T. Morgany, N. Sivasothi, Peter K. L. Ng,
B. C. Soong, Hugh T. W. Tan, K. S. Tan & T. K. Tan
BP Guide to Nature Series published by the Singapore Science Centre, sponsored by British Petroleum
2001 Raffles Museum of Biodiversity Research, The National University of Singapore & The Singapore Science Centre