|Cherry-faced Meadowhawk Dragonfly – Sympetrum internum|
Order Odonata / Suborder Anisoptera
Live adult dragonflies photographed in the wild at Winfield, Illinois, USA.
The Meadowhawks are usually the last dragonflies active in late fall. Here in northern Illinois, the white-faced and ruby meadowhawks were both still active the last week in October this year (2002) These dragonflies, sometimes called “red skimmers” are relatively small with wing spans of about two inches and usually unpatterned wings (although there may be some yellow at the base).They are fairly weak flyers, and I find them to be the most cooperative of photographic subjects – they sometimes just don’t seem to care what you do, as long as you don’t make sudden movements. I’ve even been able to move them around a bit with a nudge or two at times, and they are the only odonates that actually perch on me with any regularity. It seems to me a fair number of them are just aching to have their pictures taken.
|Dragonflies have excellent eyesight. Their compound eyes have up to 30,000 facets, each of which is a separate light-sensing organ or ommatidium, arranged to give nearly a 360° field of vision.|
Odonates are completely harmless – they do not sting or bite. Indeed, they are beneficial in the same respect spiders and other predators are beneficial – they keep the burgeoning insect population in check. Many of these species prey on each other; I often see dragonflies with damsels in their clutches. Dragonflies are among the most ancient of living creatures. Fossil records, clearly recognizable as the ancestors of our present day odonates, go back to Carboniferous times which means that the insects were flying more than 300 million years ago, predating dinosaurs by over 100 million years and birds by some 150 million.
Much larger dragonfly species existed in the distant past than occur on earth today. The largest, found as a fossil, is an extinct Protodonata named Meganeura monyi from the Permian period, with a wingspan of 70-75 cm (27.5-29.5 in). This compares to 19 cm (7.5 in) for the largest modern species of odonates, the Hawaiian endemic dragonfly, Anax strenuus. The smallest modern species recorded is the libellulid dragonfly, Nannophya pygmaea from east Asia with a wingspan of only 20 mm, or about ¾ of an inch.
Dragonflies are the world’s fastest insects and, although estimates of their speed vary wildly, most credible authorities say they are capable of reaching speeds of between 30 and 60 km/h (19 to 38 mph). A study showed that dragonflies can travel as much as 85 miles in one day.
Order Odonata: dragonflies and damselflies date back 300 million years, to the Carboniferous Period of the Paleozoic Era. These colorful, enchanting insects are revered second only to the butterflies in the popular psyche. Explore detailed close-up photographs of live, adult dragonflies and damselflies photographed in the wild.
Insects | Odonata Index | Dragonflies | Damselflies | Bugs Index | Spiders