I kept linking it to the weight measure until I realised that it probably referred to its favoured host plants , beans and members of the lentil family. In other words, grams.
They are flibberty-gibbets (I even feel like one ofthose nuns from 'Sound of Music' when saying that) of the first order. Rarely ever still and never allowing one to creep up on them. The slightest movement and they're off again, dancing over the flowers.
For some reason though, they seem to be very partial to these Brazilian Button Flowers (Centratherum intermedium). So that's where I park myself when I want to see them sit still.
But where does the Blue in its name come in? Take a look ...
I've hardly ever seen it with its wings flat open, except for a quick flash once in a while. Open and shut before I even have time to press the button on my camera. But its such a beautifully vivid blue, isn't it?
I'm guessing that those two eye-like markings on its hind wing have helped it escape from many a predator. The funniest thing is that this one below kept rubbing its hind wings together so that it looked exactly as if those eyes were looking around.
I read that these 'eyes' along with the thin tail (yes, they have a tail on the wing. See the first photo) fool predators into thinking that that is the head. So even if a nasty latches on to the hindwing thinking that's the head, the Gram Blue can break off easily and escape. Smart!
By the way, this guy looks like a real survivor, doesn't he?
The Gram Blue is not exactly a welcome butterfly, especially when I'm struggling to grow some beans. A handful of caterpillars can soon make sure that all my effort is for nothing. And I wouldn't even know it is there because it usually hides inside the pods while feasting! So no Favoured Visitor tag for this guy.
But if I could see that flash of blue more often, I think I could definitely reconsider.