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What is the second largest moth in North America?

Published in North American Moths 2 mins read

The Cecropia Silkmoth (Hyalophora cecropia) is the second largest moth found in North America.

Discovering the Cecropia Silkmoth

This impressive insect, often referred to as the Robin Moth due to its rich coloration, is a prominent member of the Saturniidae family. It is renowned for its substantial size and striking appearance, making it a captivating sight for nature enthusiasts across the continent.

Key Characteristics and Size

The Cecropia Silkmoth boasts an impressive wing span, contributing to its status as one of North America's largest moths. Its wings are adorned with intricate patterns of reddish-browns, whites, and blacks, often featuring crescent-shaped spots on each wing. These unique markings and considerable size make it relatively easy to identify.

Here's a breakdown of its notable size:

Measurement Type Centimeters (cm) Inches (in)
Wing Span 11 - 15 4 5/16 - 5 7/8

Habitat and Viewing Opportunities

While widespread across North America, the Cecropia Silkmoth can be observed in various habitats, including woodlands, suburban areas, and even urban gardens where suitable host plants are present. This large moth is particularly notable in the Adirondack Mountains in upstate New York.

  • Geographic Range: Found across the eastern two-thirds of North America.
  • Preferred Habitats: Deciduous forests, rural farmlands, and urban environments.
  • Viewing Season: Typically seen from late May through July, depending on the specific region and climate.

As nocturnal creatures, these moths are often attracted to lights. Observing a Cecropia Silkmoth in its natural habitat offers a memorable glimpse into the diverse insect life of North America.