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Species Metepeira arizonica

Spider - Metepeira arizonica Metepeira arizonica female dorsum - Metepeira arizonica - female Labyrinth Spider - Metepeira arizonica February Western Spotted OW? - Metepeira arizonica Orb weaver with very three-dimentional web structure - Metepeira arizonica Metepeira arizonica - male - female Metepeira arizonica - female Labyrinth orb-weaver - Metepeira arizonica - female
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 Metepeira
Species arizonica (Metepeira arizonica)
Synonyms and other taxonomic changes
Explanation of Names
Author of the name: Chamberlin & Ivie. Year first published: 1942.
Females 4.7 to 8.4 mm, Males 2.7 to 3.8 mm (1)
Like M. crassipes (unlike M. grinnelli and gosoga) the carapace is very dark brownish black except for the light transverse anterior head region. (1)

The following image is closest to the ventral drawing in the work cited:

(two white ventral marks & 2 spots above spinnerets)
Western Texas, northern Arizona to California. (1)
Collected March to December. (1)
Rarely they are light in color on the carapce and dorsum. (1)
Internet References
1. - The Orb-Weaver Genera Metepeira, Kaira and Aculepeira in America North of Mexico (Araneae: Araneidae) by Herbert W. Levi