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Metallic Crab Spider (Philodromus marxi)

Detailing the physical features, habits, territorial reach and other identifying qualities of the Metallic Crab Spider

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The Metallic Crab Spider can mesmerize if would just stop moving long enough to see it.

Updated: 07/07/2021; Authored By Staff Writer; Content ©www.InsectIdentification.org
The Metallic Crab Spider is a member of the Running Crab Spider family. They are long arachnids with skinny legs, and they are incredibly fast. This speed allows them to escape predators as well as catch fast-moving insects. Those long front legs are about the same length as the other legs however, so despite its name, it does not look like a crab as much as other species of Crab Spider.

This brown spider has an abdomen that is slightly darker than the rest of the body; almost rose gold in color. A shiny finish on the carapace and abdomen reflects light like precious metals. They can be found on tall grasses as well as the branches and leaves of trees and garden plants, or even roaming around on the ground.

General Characteristics
Capability, Shape, Texture/Pattern, Benefits, Dangers
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Fast insect icon
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Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Arachnida
      Order: Araneae
        Family: Philodromidae
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          Genus: Philodromus
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            Species: marxi
Identifying Information
Size, Colors, Features
Scientific Name: Philodromus marxi
Category: Spider
Size (Adult; Length): 2mm to 11mm (0.07" to 0.43")
Colorwheel Graphic Colors: brown; purple
Descriptors: metallic, gold, rose gold, fast, little, shiny, small, biting, venomous

Relative Size Comparison
Typical Size Between 2mm (0.1in) and 11mm (0.4in)
Lo: 2mm
Md: 6.5mm
Hi: 11mm
Territorial Map*
U.S., Canada, and Mexico
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Territory map graphic of the country of Mexico
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Prince Edward Is.  
* MAP NOTES: The territorial heat map above showcases (in red) the states and territories of North America where the Metallic Crab Spider may be found (but is not limited to). This sort of data is useful when attempting to see concentrations of particular species across the continent as well as revealing possible migratory patterns over a species' given lifespan. Some insects are naturally confined by environment, weather, mating habits, food resources and the like while others see widespread expansion across most, or all, of North America. States/Territories shown above are a general indicator of areas inhabited by the Metallic Crab Spider. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.


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