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Species Eustala anastera - Humpbacked Orbweaver

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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 Eustala
Species anastera (Humpbacked Orbweaver)
Synonyms and other taxonomic changes
Explanation of Names
Eustala anastera (Walckenaer, 1841)
5-8 mm (female), 4-6 mm (male)
E. anastera has 6 basic patterns.
Here are 3 that match Levi's drawing very well:(1)

Epigynum & scape
Nova Scotia south to Florida and west to Alberta, Washington and California (2)
Print References
Howell, pp. 162-163, fig. 90 (3)
Works Cited
1.The American orb-weaver genera Cyclosa, Metazygia, and Eustala north of Mexico (Araneae, Araneidae)
Herbert W. Levi. 1977. Bulletin of the Museum of Comparative Zoology, Harvard University, Vol. 148(3), 61-127.
2.The Orb-weaving Spiders of Canada and Alaska - The Insects and Arachnids of Canada Part 23
Dondale, C.D., J.H. Redner, P, Paquin and H.W. Levi. 2003. NRC Research Press.
3.Spiders of the Eastern US, A Photographic Guide
W. Mike Howell and Ronald L. Jenkins. 2004. pearson education.