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EENY 560: Southern black widow Latrodectus mactans (Fabricius) (Arachnida: Araneae: Theridiidae)

Figure 7. Egg sac of a Southern black widow, Latrodectus mactans (Fabricius). Southern black widow egg sacs are typically 1.0-1.25 cm across; the photo demonstrates the size in comparison to a dime.

Credit: Lyle J. Buss