A. aurantiaca may refer to: Annona aurantiaca, species of plant in the family Annonaceae Aurantilaria aurantiaca, species of sea snail Asura aurantiaca, species of moth of the family Erebidae Arsenicitalea aurantiaca, arsenic-resistant bacteria from the family of Devosiaceae Arcicella aurantiaca, Gram-negative, strictly aerobic, vibrioid and non-motile bacterium Asthena aurantiaca, moth in the family Geometridae Aa aurantiaca, species of orchid in the genus Aa native to Peru Stereum hirsutum, fungus typically forming multiple brackets on dead wood (synonym Auricularia aurantiaca) Alstroemeria aurea, species of flowering plant in the family Alstroemeriaceae (synonym Alstroemeria aurantiaca) Stylissa carteri, species of sponge (synonym Acanthella aurantiaca) Brassia aurantiaca, species of orchid native to Colombia, Ecuador and Venezuela (synonym Ada aurantiaca) Arnica rydbergii, North American species of flowering plant in the family Asteraceae (synonym Arnica aurantiaca) Achyra massalis, moth of the family Crambidae (synonym Anerastia aurantiaca)