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  1. Mar 1, 2024 · By Veronique Greenwood. March 1, 2024. Guilherme Gainett, then a biologist at the University of Wisconsin-Madison, was looking through a microscope at the embryo of a daddy longlegs when he saw it ...

  2. Mar 19, 2024 · The hidden pairs of eyes weren’t a total surprise to the researchers. In 2014, a 305-million-year-old fossilized daddy longlegs found in eastern France had four total eyes —two more than today ...

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  4. Mar 25, 2024 · In the order Opiliones, commonly known as harvestmen or daddy-longlegs, extant species have a maximum of one pair of single-lens camera-type eyes. 18 In Phalangida (which includes daddy-longlegs [Eupnoi]), a pair of median eyes is placed on a dorsal body protrusion, the ocularium (Figure 1 A). 18, 19 In Cyphophthalmi (mite harvestmen), most groups lack evidence of eyes, but species in two ...

  5. Mar 14, 2024 · Despite its two-eyed appearance, Phalangium opilio has six peepers. The four extra eyes — leftovers of evolution — shed light on the evolutionary history of daddy longlegs. ljphoto7/iStock ...

  6. Bishop, S. C. 1949. The Phalangida (Opiliones) of New York, with special reference to the species of the Edmund Niles Huyck Preserve, Rensselaerville, New York. Rochester Academy of Science. Proceedings 9: 159–235. Clingenpeel, L. W. and A. L. Edgar. 1966. Certain ecological aspects of Phalangium opilio (Arthropoda: Opiliones). Papers of the ...

  7. P. opilio is a member of the Eupnoi suborder of Opiliones. Distribution. P. opilio has a mostly Holarctic distribution and is the most widespread harvestman species worldwide, occurring natively in Europe, North and Central Asia, and Asia Minor. The species has been introduced to North America, North Africa and New Zealand from Europe.

  8. en.wikipedia.org › wiki › OpilionesOpiliones - Wikipedia

    A harvestman (a male Phalangium opilio), showing the almost fused arrangement of abdomen and cephalothorax that distinguishes these arachnids from spiders. Harvestmen have a pair of prosomatic defensive scent glands that secrete a peculiar-smelling fluid when disturbed. In some species, the fluid contains noxious quinones.

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