subgenital plate (ARTHRO: Insecta) A platelike sternite that underlies the genitalia, usually in the 9th abdominal sternum in males, and 7th or 8th in females; in some ichneu-monid Hymenoptera, the 7th sternite in males, the 6th in females; vulvar lamina.
subgenual organ (ARTHRO: Insecta) A cordotonal organ situated in the proximal part of the tibia; when a two-part organ, the one more proximal is known as the "true sub-genual organ."
subgenus n.; pl. subgenera [L. sub, under; genus, tribe] The name of an optional category between the genus and species; capitalized and placed in parentheses following the genus name.
subhepatic carina (ARTHRO: Crustacea) In Decapoda, a narrow ridge extending posteriorly from the branchiostegal spine.
subhepatic region (ARTHRO: Crustacea) In Decapoda, that part on the ventral surface of the carapace below the hepatic region, bounded by the pterygostomial and suborbital regions.
subimago n. [L. sub, under; imago, image] (ARTHRO: Insecta) In Ephemeroptera, the first of two winged instars after it emerges from the water surface, or underwater. subi-maginal a.
subjective synonym Two or more synonyms based on different types, but recognized as referring to the same taxon by taxonomists who hold them to be synonyms.
subliminal a. [L. sub, under; limen, threshold] A stimulus insufficient or inadequate to illicit a perceptible response. see liminal.
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