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Insects have spiracles on their exoskeletons to allow air to enter the trachea. [1] [page needed] In insects, the tracheal tubes primarily deliver oxygen directly into the insects' tissues. The spiracles can be opened and closed in an efficient manner to reduce water loss. This is done by contracting closer muscles surrounding the spiracle.
During the flutter phase of discontinuous gas exchange cycles, spiracles open slightly and close in rapid succession. [2] As a result of the negative pressure within the tracheal system, created during the closed phase, a small amount of air from the environment enters the respiratory system each time the spiracles are opened.
Pneumodesmus newmani is a species of myriapod.It is originally considered that it lived during the late Wenlock epoch of the Silurian period around 1] [2] [3] However, a 2017 study dates its occurrence based on zircon data analysis as the Early Devonian (). [4]
Viktor Stepanovich Grebennikov (Russian: Виктор Степанович Гребенников; 23 April 1927 in Simferopol – 2001 in Novosibirsk) was a self-proclaimed Russian scientist, biologist, entomologist and paranormal researcher best known for his claim to have invented a levitation platform which operated by attaching dead insect body parts to the underside.
An insect named in Greek "σίλφη" (silphe) has been identified with the cockroach, though the scientific name Silpha refers to a genus of carrion beetles. It is mentioned by Aristotle , saying that it sheds its skin; it is described as foul-smelling in Aristophanes ' play Peace ; Euenus called it a pest of book collections, being "page ...
Sir Vincent Brian Wigglesworth CBE FRS [1] (17 April 1899 – 11 February 1994) was a British entomologist who made significant contributions to the field of insect physiology. [2] [3] He established the field in a textbook which was updated in a number of editions. [4] In particular, he studied metamorphosis.
The damage caused can be fatal to attacking insects. Some bombardier beetles can direct the spray in a wide range of directions. The beetle's unusual defense mechanism has been claimed by some creationists as something that could not have evolved, although this is refuted by evolutionary biologists.
Mosquito larvae breathing, siphons up. A siphon is a tubular organ of the respiratory system of some insects that spend a significant amount of their time underwater, that serves as a breathing tube. The larvae of several kinds of insects, including mosquitoes, tabanid flies, and Belostomatidae, live in the water and breathe through a siphon.