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Species Cyclosa turbinata

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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 (Entelegynes )
Family Araneidae (Orb Weavers)
Genus Cyclosa (Trashline Orbweavers)
Species turbinata (Cyclosa turbinata)
Synonyms and other taxonomic changes
Cyclosa turbinata (Walckenaer, 1841)
females: 3.3-5.2 mm body length; males: 2.5 mm body length (1)
Females of turbinata differ from conica by being smaller in size and having a pair of anterior dorsal humps. (1)

Levi (1977) also comments in the text that the anterior dorsal humps are "often indistinct" (pg 82).

Connecticut, central New York, southern Michigan to Washington, south to Central America. (1)
Internet References

~ - The American orb-weaver genera Cyclosa, Metazygia, and Eustala north of Mexico, By Herbert W. Levi
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.