• Thumbnail for Osmeterium
    The osmeterium is a defensive organ found in all papilionid larvae, in all stages. The organ is situated in the prothoracic segment and can be everted...
    9 KB (1,002 words) - 15:51, 22 December 2023
  • Thumbnail for Papilio glaucus
    possesses an osmeterium, an orange, fleshy organ that emits foul-smelling terpenes to repel predators. Normally hidden, the osmeterium is located on...
    27 KB (2,808 words) - 20:47, 3 September 2024
  • Thumbnail for Swallowtail butterfly
    papilionid caterpillar bears a repugnatorial organ called the osmeterium on its prothorax. The osmeterium normally remains hidden, but when threatened, the larva...
    36 KB (3,603 words) - 11:01, 8 October 2024
  • Thumbnail for Lepidoptera
    "osmeterium". Merriam-Webster, Incorporated. Archived from the original on 20 February 2010. Retrieved 9 December 2009. Hadley, Debbie. "Osmeterium"....
    155 KB (16,853 words) - 09:07, 15 November 2024
  • Thumbnail for Papilio rumiko
    it everts red osmeterium from behind the head. Early instar larva tends to use osmeterium right away when disturbed, and osmeterium of the first instar...
    5 KB (546 words) - 20:27, 3 September 2024
  • Thumbnail for Caterpillar
    Giant swallowtail caterpillar everting its osmeterium in defense...
    41 KB (4,307 words) - 11:18, 5 September 2024
  • Thumbnail for Butterfly
    predators with Müllerian mimicry. Giant swallowtail caterpillar everting its osmeterium in defence; it is also mimetic, resembling a bird dropping. Eyespots of...
    101 KB (9,824 words) - 06:44, 13 November 2024
  • Thumbnail for Papilio polyxenes
    caterpillar has an orange "forked gland", called the osmeterium. When in danger, the osmeterium, which looks like a snake's tongue, everts and releases...
    28 KB (2,936 words) - 01:44, 20 September 2024
  • Thumbnail for Papilio troilus
    head." The osmeterium of the caterpillar also helps to enhance the resemblance to a snake. When attacked, the larvae will expose the osmeterium, a Y-shaped...
    24 KB (3,057 words) - 14:30, 20 October 2024
  • Thumbnail for Pheromone
    List of neurosteroids Major urinary proteins Membrane steroid receptor Osmeterium, an organ in swallowtail caterpillars Pherine Pheromone trap Quorum sensing...
    54 KB (6,260 words) - 08:53, 8 November 2024
  • Thumbnail for Papilio xuthus
    P. xuthus larva - upper: osmeterium everted - lower: undisturbed...
    20 KB (2,227 words) - 13:29, 5 September 2024
  • Thumbnail for Papilio cresphontes
    enough, larvae will employ their osmeteria when they are threatened. The osmeterium is an organ behind the head that “inflates” into an orange/red Y-shaped...
    18 KB (1,972 words) - 16:37, 9 October 2024
  • Thumbnail for Papilio helenus
    species the larva can evert a two-pronged horn-like osmeterium when it is irritated. The osmeterium secretes an repugnatorial|unpleasant-smelling liquid...
    10 KB (1,133 words) - 13:05, 3 September 2024
  • Thumbnail for Terpene
    Second- or third-instar caterpillars of Genus Papilio butterflies, like this Papilio glaucus, emit terpenes from their osmeterium....
    32 KB (3,489 words) - 03:40, 15 November 2024
  • Thumbnail for Papilio demodocus
    other predator, they produce a forked, orange-coloured organ known as an osmeterium. The organ emits a strong smell which acts as a discouragement to the...
    13 KB (1,216 words) - 18:22, 26 September 2024
  • Thumbnail for Papilio rutulus
    In their caterpillar stage, they mimic a snake with the tongue like osmeterium ( a defensive organ ) and two eyespots on the thorax to ward off potential...
    8 KB (891 words) - 06:25, 23 October 2024
  • Thumbnail for Papilio polytes
    9th segments, making it resemble that of the blue Mormon. The deep red osmeterium and yellowish-brown head help distinguish it from the blue Mormon caterpillar...
    20 KB (2,038 words) - 03:00, 16 July 2024
  • Thumbnail for Iwasaki Tsunemasa
    xuthus which fed on fragrant citrus. He described the larva with its osmeterium. Kew Gallery of Kan'en Iwasaki Honzō Zufu images (1830 and 1844 edition)...
    2 KB (217 words) - 17:45, 26 April 2022
  • Thumbnail for Glossary of entomology terms
    reniform stigma and the thorax, usually circular in shape. See figures 4, 5 osmeterium fleshy structure on some larvae, often discharging odorous chemicals....
    56 KB (5,443 words) - 07:10, 1 November 2024
  • Thumbnail for Papilio machaon
    orange markings. It has a defense against predators in the form of an osmeterium, which consists of retractable, fleshy projections behind its head that...
    23 KB (2,111 words) - 21:19, 28 October 2024
  • Thumbnail for Parnassius
    families, and like the other swallowtail butterfly larvae, possess an osmeterium. Unlike most butterflies that have exposed pupae, they pupate inside a...
    13 KB (1,216 words) - 01:08, 5 July 2023
  • Thumbnail for List of butterflies of North America (Papilionidae)
    host plants. The larvae have a reddish-orange forked gland, called an osmeterium just behind the head. When frightened, the larva thrusts the gland out...
    5 KB (419 words) - 19:28, 2 June 2022
  • Thumbnail for Papilio aegeus
    swallowtail butterflies, when disturbed, the caterpillar erects its bright red osmeterium from behind the head, releasing the smell of citrus, to drive predators...
    12 KB (1,108 words) - 12:57, 3 September 2024
  • Thumbnail for Eurytides marcellus
    bluish-white band. The larva has a yellow, foul-smelling, forked gland called an osmeterium which it will use to deter predators, especially spiders and ants. The...
    11 KB (1,099 words) - 17:44, 23 September 2024
  • Thumbnail for Papilio polymnestor
    and a blue streak in the eyespot in segments 4 to 5. It has a deep red osmeterium. The pupa also resembles that of the common Mormon but is much larger...
    14 KB (1,574 words) - 12:38, 2 November 2024
  • Thumbnail for Graphium doson
    and blue centred surrounded by lemon yellow and then black rings. The osmeterium is pale bluish green. It is extruded only reluctantly. The pupa is pale...
    8 KB (673 words) - 18:24, 29 August 2024
  • Thumbnail for Birdwing
    retractable organ behind their heads called an osmeterium. Shaped like the forked tongue of a snake, the osmeterium excretes a fetid terpene-based compound and...
    27 KB (2,832 words) - 16:15, 11 August 2024
  • Thumbnail for External morphology of Lepidoptera
    thesis). University of Florida. "Osmeterium". Merriam-Webster. Retrieved 9 December 2009. Hadley, Debbie. "Osmeterium". About.com Guide. Archived from...
    95 KB (10,298 words) - 17:44, 3 July 2024
  • Thumbnail for Papilio anactus
    front. When disturbed, the larvae can erect a reddish-orange coloured, osmeterium from behind the head which releases a citrus-like smell of rotting oranges...
    7 KB (827 words) - 12:56, 3 September 2024
  • Thumbnail for Graphium agamemnon
    larva is green, fusiform and having small black spots. It has a pair of osmeterium and black spines on each thoracic segment, the third pair being orange...
    12 KB (1,267 words) - 18:18, 29 August 2024