Credit: PETER MATULAVICH/SCIENCE PHOTO LIBRARY

Caption: Close up of the abdomen of an Annam stick insect (Medauroidea extradentata) featuring a spiracle, a fraction of a millimeter in diameter, located near the joint of one of the abdominal segments. Spiracles are holes which connect to an insect's tracheal, or "breathing," system that consists of tubes that carry oxygen to all parts of an insect's body. The spiracles open and close by way of valves that are controlled by muscles. Spiracles are lined with hairs that filter out dust as air enters. In this view, the abdomen throbs as the insect pumps fluid and air through its body.

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Keywords: air, air hole, animal, annam stick insect, arthropod, biology, breathing hole, breathing system, close up, insect, insecta, invertebrate, macro, macroscopic, medauroidea extradentata, phasmatodea, spiracle, trachael, trachea, tube, tubes, valves, walking stick, zoology

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Spiracles on stick insect

K003/6362 Rights Managed

Downloadable master

Duration: 00:00:16.26

Frame size: 1920x1080

Frame rate: 29.97

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 720.4M

Original

Capture format: DSLR - AVCHD

Codec: Apple ProRes 422 (HQ)

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