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  1. Phalangium opilio Linnaeus 1758. Size. Adult body ~3.5–3.9 mm, with males generally smaller than females. Identification. Males have a large spur/horn on the anterior surface of the first cheliceral segment. Males also tend to have long, thin pedipalps relative to those of other harvestmen.

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  2. P. opilio is highly susceptible to at least some broad spectrum insecticides, while some more specific products, such as Bts, appear to be less harmful. Conservation. Avoid using broad spectrum insecticides as much as possible. Commercial Availability. Not currently available commercially. References. Bachmann, E. and M. Schaefer. 1983.

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  4. 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 ...

  5. P. opilio is highly susceptible to some broad spectrum insecticides, so use of such insecticides is discouraged for conservation of P. opilio populations. Some specific products appear to cause less harm to P. opilio , such as Bts .

  6. Oct 30, 2014 · There are 38 records in the project database. A male Phalangium opilio in Baltimore Co., Maryland (12/5/2016). Determined by Ken Wolgemuth/BugGuide. Photo by Emily Stanley. ( MBP list) A male Phalangium opilio in Montgomery Co., Maryland (10/20/2014). Verified by Dr. Jeffrey Shultz/BugGuide.

  7. This datasheet on Phalangium opilio covers Identity, Distribution. Get full access to this article View all available purchase options and get full access to this article.

  8. Feb 1, 2005 · The harvestman Phalangium opilio L. is an abundant predator in an array of habitats, including agricultural systems. In these systems, P. opilio has been noted to feed on pest species (e.g., Colorado potato beetle larvae, various aphid species, and lepidopteran eggs).