1: collected at Dong Nai, Vietnam;
2: 22/3/2018
3: Melaleuca forest
4: nearly 10mm, see image for measure
5: black head, red-brownish body and dark brown gaster;
6: some have big head, other don't;
7: some seems to be female, carrying eggs around, the others have big head but don't do anything, and i don't seems to see the queen also, none of them is distinquished, they look just like each other, none is bigger than the others, no bigger gasters, ect... don't seem to bite me neither
8: i found them living under a coconut husk
9: no idea about the nuptial flight lel
10: pictures~~
https://imgur.com/n3xmZ5V