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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Micrathena sagittata - Arrowshaped Micrathena

So. MD Micrathena Sagitta - Micrathena sagittata Spider - Micrathena sagittata - female Arrow shaped Mircrathena? - Micrathena sagittata Orbweaver Spider 1 - Micrathena sagittata Spider? - Micrathena sagittata Some type of Micrathena? - Micrathena sagittata Arrowshaped Micrathena - Micrathena sagittata - female Micrathena sagittata - Arrowshaped Micrathena - Micrathena sagittata - male - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Araneidae (Orb Weavers)
Genus Micrathena
Species sagittata (Arrowshaped Micrathena)
Explanation of Names
Latin: "arrowed, in the form of an arrow"
Female 8-9mm, Male 4-5mm (1)
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 adomen does not have spines, widest at rear. (1)
Eastern U.S. west to Texas and Nebraska. (1)
Builds webs in open woods. (1)
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)
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.