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Grote's Bertholdia

Bertholdia trigona

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DanielePralong 3 years ago

Congratulations VanTruan, this beautiful moth has been chosen to kick start National Moth Week 2017:

"National Moth Week 2017 has started! In honor of this year’s focus on tiger moths, Project Noah ranger, National Moth Week organizer and Cornell University entomology student Jacob Gorneau is bringing us daily interesting facts about tiger moths (Erebidae: Arctiinae):

"Moths are constantly under the threat of predation by bats, and have evolved defenses to avoid this. Some tiger moths, such as this beautiful Bertholdia trigona, can emit clicking sounds to jam the sonar of bats, allowing them to disappear long enough to escape predation (Corcoran et al. 2011). The clicks are emitted from structures called tymbal organs".
Bertholdia trigona spotted in Colorado, USA, by VanTruan

National Moth Week is from July 22-30. Are you participating? Please register a public or private event here:, especially if your country or region isn't on the map yet!
Don't forget to submit photos of moths you spot here!"



Wow amazing colors on this one. Great photo!

Ingrid3 4 years ago

What amazing colors!

Spotted by

Colorado, USA

Spotted on Jul 29, 2016
Submitted on Aug 21, 2016

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