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Ceratina sp
green-golden-metallic, about 1 cm.
Ceratina are commonly dark, shining, even metallic bees, with fairly sparse body hairs and a weak scopa on the hind tibia. Most species have some yellow markings, most often restricted to the face, but often elsewhere on the body. They are very commonly mistaken for "sweat bees" (family Halictidae), due to their small size, metallic coloration, and some similarity in wing venation; they can be easily separated from halictids by the mouthparts (with a long glossa) and the hindwings (with a tiny jugal lobe).
Thanks Emma, ... and I love photo number 3 because most helpful for identification process :)
Ceratina bees can be very similar to Sweat bees but they are not even the same family so is not a good idea using colors for identifying bees. First, the body shape is different on Ceratina, they are more robust, second, Ceratina has a white mark on the face. Check these pictures: http://www.flickr.com/photos/29697818@N0...
... 1 from American and other 1 from Indonesia, looks similar ... but this species is minor in southeastern Asia (Indonesia)... confirm with http://en.wikipedia.org/wiki/Sweat_bee
is it exactly same as http://www.projectnoah.org/spottings/590... ?
It's probably a Ceratina bee. These bees are related to Carpenter bees but they can be very small.