A White-dotted Prominent Moth caterpillar in Howard Co., Maryland (9/14/2013). Note the recently shed skin below the posterior abdominal segements in this recently molted individual.
White-dotted Prominent Moth in Anne Arundel Co., Maryland (9/3/2019). (c) Timothy Reichard, all rights reserved.
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White-dotted Prominent Moth in Allegany Co., Maryland (5/14/2021). (c) Timothy Reichard, all rights reserved.
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Timothy Reichard.
White-dotted Prominent Moth in Anne Arundel Co., Maryland (5/30/2022). (c) Hugh McGuinness, all rights reserved.
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Hugh McGuinness.
White-dotted Prominent Moth in Anne Arundel Co., Maryland (8/12/2020). (c) Timothy Reichard, all rights reserved.
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Timothy Reichard.
White-dotted Prominent Moth in Howard Co., Maryland (6/8/2017). (c) Timothy Reichard, all rights reserved.
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White-dotted Prominent Moth in Allegany Co., Maryland (7/2/2017). (c) Timothy Reichard, all rights reserved.
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Timothy Reichard.
White-dotted Prominent Moth in Allegany Co., Maryland (5/20/2017). (c) Timothy Reichard, all rights reserved.
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White-dotted Prominent Moth caterpillar in Dorchester Co., Maryland (8/19/2021). (c) Mark Etheridge, some rights reserved (CC BY-NC).
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Mark Etheridge.
White-dotted Prominent Moth in Frederick Co., Maryland (9/4/2022). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC).
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White-dotted Prominent Moth in Anne Arundel Co., Maryland (8/26/2022). (c) Timothy Reichard, all rights reserved.
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White-dotted Prominent Moth in Anne Arundel Co., Maryland (8/23/2018). (c) Timothy Reichard, all rights reserved.
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Timothy Reichard.
White-dotted Prominent Moth in Anne Arundel Co., Maryland (8/26/2022). (c) Timothy Reichard, all rights reserved.
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Timothy Reichard.
White-dotted Prominent Moth in Anne Arundel Co., Maryland (8/23/2018). (c) Timothy Reichard, all rights reserved.
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Timothy Reichard.
White-dotted Prominent Moth in Anne Arundel Co., Maryland (8/26/2022). (c) Timothy Reichard, all rights reserved.
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Timothy Reichard.
A White-dotted Prominent Moth caterpillar in Howard Co., Maryland (9/14/2013). Note the recently shed skin below the posterior abdominal segements in this recently molted individual.
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Joanne Solem.
A White-dotted Prominent Moth caterpillar in Baltimore City, Maryland (7/19/2010). Determined by John and Jane Balaban/BugGuide.
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Thomas Wilson.
White-dotted Prominent Moth in Anne Arundel Co., Maryland (8/26/2022). (c) Timothy Reichard, all rights reserved.
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The rough prominent (Nadata gibbosa) is a moth of the family Notodontidae, subfamilyPhalerinae. It is also known as the white-dotted prominent and the tawny prominent. The species was first described by James Edward Smith in 1797. This common moth is found across North America from the northern boreal forests to as far south as Florida. It is most common in deciduous forests at some elevation. It is nocturnal but attracted to lights. The moths start to fly soon after dusk and return to resting places some time before dawn breaks (Fullard & Napoleone 2001). The adults live through late spring and early summer, and larvae are active until fall. They then pupate until the following spring.
The moth is tan or dull orange, with two small silver spots on each forewing. The wingspan is approximately 2 inches (5 cm). It sports a pointed thoracic tuft between its wings.
The larva is blue green, turning bright green as it approaches pupation age. It has a large head capsule, yellow mandibles, and yellow longitudinal stripes down its body. It feeds on the leaves of oaks and other deciduous trees (see list below). The larva is sometimes called the green oak caterpillar.
Fullard, James H. & Napoleone, Nadia (2001): Diel flight periodicity and the evolution of auditory defences in the Macrolepidoptera. Animal Behaviour62 (2): 349–368. doi:10.1006/anbe.2001.1753PDF fulltext