The changes in distribution appear to have coincided
with climate change in central Malaysia where long-term
regional warming has been observed over the last couple
of decades (D. Wells in litt. 2005). These climatic changes
Forktail 22 (2006) SHORT NOTES 119
may also be a causal factor in the increased elevational
limits of at least six species observed at Bukit Fraser,
Pahang, peninsular Malaysia in August 2003 (Rheindt
2004). Further monitoring is desirable to track any further
changes in either elevational or range limits for this and
other species within the region that might be related to
regional or global climate change.