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  • noun

Words related to spiracle

a breathing orifice

References in periodicals archive ?
--T1 with spiracular area clearly projecting and forming a small concavity right behind spiracle (Fig.
In our case, those characters do not appear clearly unequivocal: some key features seem related to all three species, that is, the second thoracic segment interband area [10], and shape of the posterior spiracles [3,17, 18], while some characteristics cannot be ascribed to any of these three species, that is, the number of lobes on anterior spiracles and edge of the posterior spiracular cavity [3, 17] (Table 1).
On each spiracular plate (Sp), three elongated spiracular openings, four interspiracular processes (IP), one round and slightly yellow spiracular scar (Ss).
This species having five to ten spiracular bristles but without postspiracular bristle.
u is the oxygen growth rate at low oxygen densities, K is the tracheal carrying capacity of the oxygen gas, e is the maximum spiracular water loss in the thorax and elytral case as a result of the insect respiration, f is the water ingress rate into the trachea, and h is the water density/volume where water loss is half saturated.
The third character concerns the placement of the spiracular opening on the female eighth abdominal segment--on the membrane versus on the tergite.
The morphological characters examined were the pseudocephalon, cephalopharyngeal skeleton, spinules, spiracular atrium and the posterior spiracles.
1d) yellow to yellowish-brown in coloration, almost smooth, squarish in shape with spiracular tubercles prominent.
The posterior spiracles are slightly raised and the spiracular openings are sinuous slits which are completely surrounded by an oval black border (Figure 1).
Pterothoracic pleura: Mesepimeron subrectangular, dorsal margin weakly arcuate; metathoracic spirade visible, opening narrow, evaporative areas vestigial, reduced to lip of spiracular opening (not visible under light microscope) (Fig.
3 broad, ovoid, dark red-brown to black, narrow in front, broadly rounded behind, maximum breadth at spiracular level.