Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 

Register · Log In
HomeGuideID RequestRecentFrassForumsDonateHelp
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29


Previous events
TaxonomyBrowse
Info
ImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Orb Weavers (Araneidae) » Micrathena » Arrowshaped Micrathena (Micrathena sagittata)

Species Micrathena sagittata - Arrowshaped Micrathena

Classification · Synonyms and other taxonomic changes · Explanation of Names · Size · Identification · Range · Habitat · Remarks · Print References · Internet References · Works Cited
Arrow-shaped Micrathena - Micrathena sagittata - female Crab Spider? Species? - Micrathena sagittata Spider, with spikes - Micrathena sagittata Micrathena??? - Micrathena sagittata Interesting spider - Micrathena sagittata NC spider - Micrathena sagittata Arrow-shaped micrathena spider - Micrathena sagittata Spider for ID - Micrathena sagittata
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Araneidae (Orb Weavers)
Genus Micrathena
Species sagittata (Arrowshaped Micrathena)
Synonyms and other taxonomic changes
See the World Spider Catalog.
Explanation of Names
Micrathena sagittata (Walckenaer, 1841)
sagittata (L). "arrowed, in the form of an arrow"
Size
Female 8-9mm, Male 4-5mm (1)
Identification
Female: three pairs of pointed tubercles on the abdomen, with the rear pair large and spreading to give the abdomen a triangular look. Tubercles are black-tipped and red at the base. The center of the dorsum is yellow. Male abdomen does not have spines, widest at rear. (1)

Palp:
Range
e. US to Texas and Nebraska. (1)
Habitat
Builds webs in open woods. (1)
Remarks
Web often has a short stabilimentum above the hub. (1)
This spider does not pose a danger to humans (and neither do any others in this family).
Print References
Kaston, p. 133-134 & Figures 334, 335 (1)
Spiders & Their Kin, p. 67 (2)
Internet References
Enciclovida. In Spanish
Works Cited
1.How to Know the Spiders
B. J. Kaston. 1978. WCB/McGraw-Hill.
2.Spiders and Their Kin: A Golden Guide from St. Martin's Press
Herbert W. Levi, Lorna R. Levi, Nicholas Strekalovsky. 2001. St. Martin's Press.
Contributed by Troy Bartlett on 16 February, 2004 - 1:20pm
Additional contributions by Mike Boone, Hannah Nendick-Mason, Beatriz Moisset, cheins, Chuck Entz, Mike Quinn, kschnei
Last updated 4 February, 2023 - 8:24am

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2024 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Plant Pathology, Entomology and Microbiology at Iowa State University logo

Printer Friendly Version 		Terms of Use
Privacy Statement
Site Map
Contact