Appearance
Generally nocturnal, females may become diurnal in the fall. Females are about 9.5–19 millimeters long, while males are somewhat smaller. The upper surface of the abdomen is brown and hairy. The legs display alternating light and dark brown bands. The undersurface of the abdomen is black, with two white spots.The orb part of the web may be nearly 2 feet in diameter. The eggsac consists of fluffy yellow threads in a rolled leaf over a lenticular or spherical egg mass 5–12 mm in diameter, which may contain up to 1,000 eggs. Juveniles are frequently preyed upon by mud daubers.
Naming
Its common names include Hentz’s orbweaver, and barn spider, though the latter nickname suggests the confusion that can result from using common names for spiders, as the name "barn spider" is also commonly used for the species ''Araneus cavaticus''.References:
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