stigma
From ZooTerms (Dictionary of Invertebrate Zoology)
stigma (noun; plural stigmata; Greek stigma, mark): 1. A spiracle or breathing pore.
2. (Arthropoda: Chelicerata) In Acari, a sclerite surrounding a spiracle.
3. (Arthropoda: Insecta) a. A colored wing spot
See also: monostigmatous. b. In Odonata, a tickening of the wing membrane along the costal border near the apex. c. In Diptera, An apodeme at the base of the ventral surface of the postgenital lobe of female mosquitoes; basal median (longitudinal) apodeme; a sclerite surrounding a spiracle on a maggot. 4. (Platyhelminthes: Trematoda) In Schistosomatoidea, an operculum-like area of an eggshell through which the miracidium hatches.
