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Species Araneus cavaticus - Barn Spider

Bristly Spider in roof eave - Araneus cavaticus - male Large Vermont spider with bulbous, slightly greenish abdomen - Araneus cavaticus Large Orb Weaver - Araneus cavaticus - female Barn spider? - Araneus cavaticus - female Is this cavaticus? - Araneus cavaticus spider - Araneus cavaticus juvenile barn spider - Araneus cavaticus - female SPIDER - Araneus cavaticus - female
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 Araneus
Species cavaticus (Barn Spider)
Other Common Names
Barn Spider
Synonyms and other taxonomic changes
Identification
Araneus cavaticus is often confused with Neoscona crucifera. These two species can be differentiated using two main features:

1) Araneus cavaticus has 'shoulders' near the front on the dorsal side of the abdomen.

A. cavaticus                     N. crucifera

2) Araneus cavaticus has comma shaped ventral marks, Neoscona has more of a broken "L"

A. cavaticus                     N. crucifera
Remarks
This is the spider in the book Charlotte's Web by E.B. White. The spider's full name is Charlotte A. Cavatica.