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Aquatic insects have developed freeze tolerance much like their terrestrial counterparts. However, freeze avoidance is not an option for aquatic insects as the presence of ice in their surroundings may cause ice nucleation in their tissues. [15]: 148 Aquatic insects have supercooling points typically around −3º to −7 °C.
Freezing of the head and thorax in other insects tends to have adverse effects on neural tissue, so it is not surprising that these protective mechanisms have been observed in certain species, but E. nugatoria is the only insect known to semi-freeze through the winter. By allowing the abdomen to freeze, evaporative water loss is reduced over ...
Their eyes are either missing or reduced and they have no ocelli (simple eyes). [2] Their closest living relatives are the recently discovered Mantophasmatodea. [3] Most species are less than 3 cm long, the largest being Namkungia magnus. [4] The family has its own order, Grylloblattodea (sometimes considered a suborder of Notoptera [1]). It ...
They were once thought to be extinct but were rediscovered in 2001.
Tonic immobility can be found in several families of anurans (frogs and toads). [41] In anurans, tonic immobility is demonstrated most often with open eyes and the limbs sprawled and easy to move, but some species keep their eyes closed. [41] Some species also protrude their tongue. [41]
Eleodes take shelter almost anywhere that can protect them from the hot and cold, this can be wood or rocks but is often rodent burrows. Every night when these beetles scavenge for food they pick a new shelter for the day which if not suitable for protection against the elements, will be abandoned in search of a new one. [ 10 ]
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 ...
Ascalaphidae is a family of insects in the order Neuroptera, commonly called owlflies; there are some 450 extant species. They are fast-flying crepuscular or diurnal predators of other flying insects, and have large bulging eyes and strongly knobbed antennae. The larvae are ambush predators; some of them make use of self-decoration camouflage.