• HOME
  • True Bugs
  • Spiders
  • Beetles
  • Bees & Ants
  • Butterflies
  • Insects By State
  • Spiny Backed Orb Weaver - (Gasteracantha spp.)

    Spiny Backed Orb Weaver - (Gasteracantha spp.)

    You can look, but don't touch the Spiny-backed Orbweaver spider. Those thorns help keep predators at bay.




    Staff Writer (8/13/2014): The spines on the side of this female spider make it unique and easy to recognize. Males are considerably smaller than females and they lack the spines. There are a variety of species in this genus and colors vary.

    Like other orb weavers, it creates a web that is circular in shape, only it has few or no spirals at the center of its web. Each night, a new web is spun to catch small insect prey. The spider stands up-side-down on the web.

    Late in the year, the female will lay eggs that will grow throughout winter, hatching spiderlings in the spring. The oval-shaped egg sac is near the web, usually hidden underneath leaves. It may be white, green or yellowish, but it is woven of the spider's silk.

    ©2005-2016 www.InsectIdentification.org. All Rights Reserved. No Reproduction Permitted. Unauthorized use and/or duplication of this material without express and written permission from www.InsectIdentification.org is strictly prohibited. Material presented throughout this website is for entertainment value and should not to be construed as usable for scientific research or medical advice (insect bites, etc...). Please consult licensed, degreed professionals for such information. Email corrections / Comments to InsectIdentification at Gmail dot com.


    Details of the:
    Spiny Backed Orb Weaver


    Category: Spider
    Common name: Spiny Backed Orb Weaver
    Scientific Name: Gasteracantha spp.
    Other Names: Crablike Spiny Orb Weaver Spider

    Taxonomy:
      Kingdom: Animalia
       Phylum: Arthropoda
        Class: Arachnida
         Order: Araneae
          Family: Araneidae
           Genus: Gasteracantha
            Species: spp.

    Size (Adult, Length): 2mm to 10mm (0.08in to 0.39in)

    Identifying Colors: orange; black; white; yellow; red

    Additional Descriptors: spikes, flat, spines, thorns, spots, biting, venomous


    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


    * 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.