anal vein

noun

1. one of several veins in the rear portion of the wing of an insect.

Example Sentences

Anal area: Orthoptera and Neuroptera; the hinder or anal portion of a wing within the anal vein = axillary area.

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Anal loop: Odonata; the loop formed by the angulations of 1st anal vein.

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Anal furrow: in wings, lies between the cubitus and 1st anal vein.

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Trichoptera; one, two or three cells enclosed by the branches that form-the post-costal or anal vein: Odonata; an elongate cell between radius and cubitus, just before the arculus.

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This species much resembles L. socia, but may be distinguished by the difference of colour, and more especially by the more undulating first branch vein, by the much less oblique third externo-medial vein, and by the subanal vein, which is united to the anal vein much nearer the border.

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