A Bee-fly, Order Diptera (雙翅目) family Bombyliidae (蜂虻科) Toxophora sp.
quite common near my common macro area but always failed chase it …. as it is too tiny (~2-4mm at long) ….
I was lucky last week to have it with some dews too and I was using my SIGMA150 F2.8 that time so no problem to get few shots before it flew off …
and with FULL ET + 1.4TC + ~some crop
and thanks admin and member of www.diptera.info for the ID
more Fly Series | Diptera 雙翅目
http://www.flickr.com/photos/liewwk/sets/72157605352673898/with/5473302131/