Spiracle or spiraculum may refer to: Spiracle (arthropods), opening in the exoskeletons of some arthropods Spiracle (vertebrates), openings on the surface...

Spiracles (/ˈspɪrəkəl, ˈspaɪ-/) are openings on the surface of some animals, which usually lead to respiratory systems. The spiracle is a small hole behind...

A spiracle or stigma is the opening in the exoskeletons of insects, myriapods, velvet worms and many arachnids to allow air to enter the trachea. In the...

respiratory systems of insects through a series of external openings called spiracles. These external openings, which act as muscular valves in some insects...

cetology, the study of whales and other cetaceans, a blowhole is the hole (or spiracle) at the top of the head through which the animal breathes air. In baleen...

internal gills vented by spiracles. Depending on the species, there can be two spiracles on both sides of the body, a single spiracle on the underside near...

adjacent sclerotized parts by membranes. Each segment carries a pair of spiracles. The outer skeleton, the cuticle, is made up of two layers: the epicuticle...

 pronotum   mesoscutum   tegula   prepectus   mesothoracic spiracle   head  The superfamily Chalcidoidea is a megadiverse group of parasitic wasps that...

Anatomy - (1) Egg m-micropyle (2) Head o-ocelli s-spiracle (3) s-spiracle m-malphigian tubules g-silk gland (4) a - antenna l-labrum o- ocelli k mandible...

pieces of debris from damaging the delicate gills. A smaller opening, the spiracle, lies in the back of the first gill slit. This bears a small pseudobranch...

has a pair of legs on each segment. The thorax is also lined with many spiracles on both the mesothorax and metathorax, except for a few aquatic species...

the eye. The anuran larva or tadpole has a single central respiratory spiracle and mouthparts consisting of keratinous beaks and denticles. Frogs and...

arrangement of spiracles. In this order, spiracles are arranged in a series down the middle of the centipede's back, whereas spiracles in all other centipedes...

retain gill rakers. Though all but the most primitive bony fish lack a spiracle, the pseudobranch associated with it often remains, being located at the...

absorb oxygen through water, and instead breathe via a small dark tube (a spiracle) on their posterior end — they must regularly reach the surface to obtain...

series of rings, each with a hole for breathing and respiration, called a spiracle, composing three different segmented sclerites: the tergum, pleura, and...

spiders of the family Clubionidae and other spiders by having the abdominal spiracle placed one third to one half of the way anterior to the spinnerets toward...

missing. Many of these larvae retract their heads into their thorax. The spiracles in the larva and pupa do not have any internal mechanical closing device...

Centipede respiratory systems do not provide any mechanism for shutting the spiracles, and that is why they need an environment that protects them from dehydration...

connected to the surroundings through a pair of spiracles, but in the majority of spiders this pair of spiracles has fused into a single one in the middle,...

ridges or short laminae directed posteriorly. The anterior spiracles (prothoracic spiracles) end bluntly and are not elongated. Each has at least three...

during non-mating seasons. Spiracles are small openings that allow some fish and amphibians to breathe. Stingray spiracles are openings just behind its...

varying between dark brown and burgundy with white spiracle patches, and green with yellow spiracle patches. Imperial moths (their many regional morphs...

Anterior spiracle of a larval Anastrepha ludens...

6, all bear pairs of spiracles. They serve as openings for the scorpion's respiratory organs, known as book lungs. The spiracle openings may be slits...

have spiracles and trachaea, such as some Collembola, breathe directly through their skins, also by diffusion of gases. The number of spiracles an insect...

surroundings through a pair of openings called spiracles, but in the majority of spiders this pair of spiracles has fused into a single one in the middle,...

several tubes arise in a bundle from a small chamber connected to the spiracle. This type of tracheal system has almost certainly evolved from the book...

roughly oval and bluntly-pointed at both ends. They have 15 segments and spiracles in each segment for breathing. They have no legs but move within the cell...

carbon dioxide, pass through their exoskeleton via tiny valves called spiracles. Insects also lack closed blood vessels; instead, they have a long, thin...