Idaea, sometimes called Hyriogona (among other synonyms), is a large genus of geometer moths. It was erected by Georg Friedrich Treitschke in 1825. They are found nearly worldwide, with many native to the Mediterranean, the African savannas, and the deserts of western Asia.
The genus Idaea refers to a massive, nearly worldwide group of geometer moths (family Geometridae, subfamily Sterrhinae) known for their small size and varied, often cryptic patterns. As of 2013-2022, there are roughly 680 to over 1,000 recognized species in this genus, making it the third most species-rich group in its family.
Size: They are small moths, with wingspans typically measuring well under 30 mm (often 10-25 mm).
Their wings often feature shades of brown, white, or gray with delicate, wave-like lines (hence the common name "waves" for many species in this subfamily).
Adults frequently rest with their wings spread flat, often blending in with their surroundings.
