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  • Shamrock Spider - (Araneus trifolium)

    Shamrock Spider - (Araneus trifolium)

    The Shamrock Spider may not be green, but their stripes are in threes and gardens are lucky to have them.

    Staff Writer (8/28/2017): The bold black and white legs of the Shamrock Spider lend this species a classic Halloween-look. The bulbous abdomen can vary in color from light white or yellow to bright red or purple.

    As an Orb Weaver, the Shamrock Spider creates a new web every day. In the early morning, it eats the strands of its old web first and then rebuilds another, usually in the same place. This is one of the better times of day to see them in action. Orb Weavers tend to sit up-side down in the center of their web, but this species may actually hide in leaves nearby. It attaches a single thread to its hideout so it won't miss any movement made by an ensnared insect.

    Females lay fertilized eggs in a sac spun from spider silk in autumn. The eggs overwinter and spiderlings wait to hatch until warmer spring weather returns. Once they emerge, they disperse and create their own webs and hideouts. Spiders reside in tall shrubs or grasses in woodlands or near water creeks, marshes and streams. They may also be found in parks and gardens, where they help reduce the number of pest insects.

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    Details of the:
    Shamrock Spider

    Category: Spider
    Common name: Shamrock Spider
    Scientific Name: Araneus trifolium

      Kingdom: Animalia
       Phylum: Arthropoda
        Class: Arachnida
         Order: Araneae
          Family: Araneidae
           Genus: Araneus
            Species: trifolium

    Size (Adult, Length): 4mm to 20mm (0.16in to 0.79in)

    Identifying Colors: black, white, yellow, gray, purple

    Additional Descriptors: bands, stripes, dots, shoulders, bumpy, halloween

    North American Reach (Though Not Limited To*): Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Hawaii; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming; Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Nova Scotia; Ontario; Prince Edward Island; Quebec; Saskatchewan; Mexico

    * Keep in mind that an insect's reach is not limited by lines on a map and therefore may appear in areas/regions/states beyond those listed above.

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