I knew as soon as I posted the last dragonfly update on the pond that it probably wouldn’t be the last and sure enough over the last month or so there has been plenty of dragon activity in the garden.
The darters have continued to be the predominant dragonflies at the pond, but with a new addition – at least one Ruddy Darter.
Very similar to the Common Darters, there may well have been more than one Ruddy visiting, but unless they sit still enough to get a decent photo, I find it hard to tell them apart.
The Ruddy ones have all-black legs (left), whereas the Common ones have a dingy yellow streak down the legs (right).
But it’s impossible to see any of that when they are flying. And they’ve been doing a lot of that, often paired up and laying eggs together. Unless they pause and rest, I’ve no idea whether it is Ruddy or Common pairs I am watching. This pair did take a bit of a break, with the male seeming to have made himself comfy on the perch, while leaving the female clinging on for dear life! (I’ll refrain from commenting on a woman’s lot!)
They flit around the pond, laying eggs with a dab of the female’s abdomen in the water. They are very hard to either video or photograph as no sooner have you focussed than they’re off across the pond. So apologies for the shaky video and fuzzy photos. The male holds onto the female at the back of her head using claspers at the end of his abdomen.
They then fly in tandem around the pond depositing the eggs. The eggs are just laid apparently at random in the water, rather than being carefully placed onto vegetation as some species do. The males hold onto the females while they lay the eggs to prevent other males from mating with her. I don’t know which one of them controls the movement – whether the female decides when to dip or whether the male just dunks her in the water when he feels like it.
Occasionally we’ve been lucky enough to find a pair of darters at the earlier stage in the mating cycle, when they are curled together in the wheel position, before they take off on their tandem flight. The male clasps the female at the back of her head and the female curves her abdomen up and round to collect the sperm from the top of his abdomen. When they are stationary like this it is possible to get sharp enough photos to determine which species we’re looking at. So far all these pairs have turned out to be Common Darters, but hopefully the Ruddy Darters have been mating in the pond too.
We had some very hot weather for a few days in August and one Common Darter in particular spent a lot of time in the obelisk pose (I’ve not made that up, it’s a real thing in dragonflies!). They align themselves so that the tip of the abdomen is pointed towards the sun – it’s supposed to reduce the surface area exposed to the heat and so stop them overheating.
One of them even did it right in front of me, its abdomen pointing right up and pulsating slightly. Again apologies for blurry camera work, but I hadn’t been expecting a pulsating bottom to be pointed at me this way!
The Emperor dragonflies were still visiting in August and laying lots of eggs. This one made good use of one of the barley logs we have in the pond to keep the water clear. I know I shouldn’t anthropomorphize a dragonfly, but she really does seem to have a look of concentration on her face to me.
There have been some other large dragonflies zooming around the pond this last few weeks, but it took until a few days ago for a couple to stop long enough to get a photo. For some reason both chose to rest on the Himalayan Honeysuckle that hangs over the pond from next door. After some debate the first one was identified as a female Southern Hawker.
I thought the second one was probably the same, but turns out no, it was a female Migrant Hawker.
I think these two hawker species will be another pair that I can only reliably separate with decent photos. Both stunning dragonflies though.
So that brings our dragonfly/damselfly tally for the new pond to 9 species. Pretty impressive for a pond that is only just over 6 months old. And there are still a few species that we might yet hope to see in future years. Hopefully next summer we will have plenty of dragonflies emerging from the pond and the cycle will begin again. Now that’s something to smile about.