Low-antennae Whitefly Wasp

Size 1mm. This is a minute wasp you can hardly see by eye. I actually photographed a Coconut Whitefly home when I noticed some black spots that moved. There were two of them. Since they have a slim waist and clubbed antennae, I assume they are parasitic wasps. They even resemble what I call Low-antennae Psyllid Wasp. However, this species has a totally dark body, dark abdomen and dark thorax.