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The nymphs of the hemimetabolous orders mayflies, dragonflies and stoneflies, and the larvae of the holometabolous orders megalopterans and caddisflies, possess tracheal gills, which are outgrowths of the body wall containing a dense network of tracheae covered by a thin cuticle through which oxygen in the water can diffuse. [3] [4] [5]
In the water, various species of ducks and herons eat dragonfly nymphs [82] and they are also preyed on by newts, frogs, fish, and water spiders. [84] Amur falcons, which migrate over the Indian Ocean at a period that coincides with the migration of the globe skimmer dragonfly, Pantala flavescens, may actually be feeding on them while on the ...
Some taxa, like dragonflies, spend their adult stage outside the water. Other taxa, like water beetles, are aquatic for their entire lives. The evolution of different life history strategies of aquatic macroinvertebrates has allowed species to take advantage of differences in food supply and allow some to better tolerate extreme environmental ...
The insect family Macromiidae contains the dragonfly species known as cruisers or skimmers.They tend to fly over bodies of water (and roads) straight down the middle. They are similar to Aeshnidae in size, but the eyes are green and just barely meet at the top of the head.
Odonata is an order of predatory flying insects that includes the dragonflies and damselflies (as well as the Epiophlebia damsel-dragonflies). The two major groups are distinguished with dragonflies (Anisoptera) usually being bulkier with large compound eyes together and wings spread up or out at rest, while damselflies (suborder Zygoptera) are usually more slender with eyes placed apart and ...
Males also have secondary genitalia (including the anterior lamina, hamuli and posterior lamina) on S2 and S3. Female damselflies and some dragonflies have a strong ovipositor on the underside of S8 and S9, but in many dragonflies the egg-laying apparatus is merely a spout, a basket, or a pair of flaps. Some species have foliations (leaf-like ...
Dragonflies have thus come to exemplify spiritual awakening, enlightenment and clarity, particularly for Christians. But there's much more to unpack around the dragonfly's spiritual meaning ...
The chasers, darters, skimmers, and perchers and their relatives form the Libellulidae, the largest family of dragonflies. [2] It is sometimes considered to contain the Corduliidae as the subfamily Corduliinae and the Macromiidae as the subfamily Macromiinae. Even if these are excluded (as Silsby does), there remains a family of over 1000 species.