Most British species prefer ponds or slow-moving water, but not the golden-ringed dragonfly, a true northerner and happiest on an acid moorland stream – like this female with her elongated body banded in black and yellow.
Looking around from my perch, I spotted a dragonfly resting on a stalk of grass, just five feet away, every detail picked out by sunlight so that it glittered and shone.
Like a real dragonfly, the X-50A can stay airborne without moving.
A tiny flying robot of this sort, equipped with a camera, could get into places that are too small or dangerous for people enemy bunkers, for example—and report what was going on.In the Netherlands, researchers at the University of Delft, led by Rick Ruijsink, have developed DelFly, a robotic version of a dragonfly that has two pairs of flapping wings which are moved by an electric motor.
It looks like a blue dragonfly.
In Russia the satirical magazine Strekoza (1875 1918; "Dragonfly"), which reached its apogee in the late 1870s through the 1880s, published French-influenced Chekhovian comedies of everyday domestic life.
A damselfly larva is distinguishable from a dragonfly larva by its breathing apparatus.
For example, there are only a few dozen facets in the eye of the primitive apterygote Collembola, while the eye of the housefly Musca has some 4,000, and the highly developed eye of the dragonfly may contain up to 28,000.
In dragonfly larvae, the gills are inside the rectum, and the water is pumped in and out through the anus, whereas damselflies have external rectal gills.
Inside, it has a dragonfly and leaf-design printed lining with loads of card compartments and space for your documents.
There are 12 species of dragon and damselflies, in-cluding the rare hairy dragonfly.
