More Examples of Different Dewlap Colors in Males and Females

dewlap dimorphism

In a recent post, we discussed the description of two new Costa Rican anoles, but didn’t draw attention to the fact that all members of the A. pachypus species complex exhibit dewlap dichromatism, with the dewlaps of males and females differing within a species. Shown here are differences in A. tropidolepis (top) and A. pachypus (bottom). The images on the right are females and the left and center are males.

In a previous post, we discussed this phenomenon, but its explanation still escapes us. Interestingly, it occurs almost exclusively in mainland anoles.

About Jonathan Losos

Professor and Curator of Herpetology at the Museum of Comparative Zoology at Harvard University. I've spent my entire professional career studying anoles and have discovered that the more I learn about anoles, the more I realize I don't know.

3 thoughts on “More Examples of Different Dewlap Colors in Males and Females

  1. In only about 22 Caribbean species of anoles do females have dewlaps, and of those, around 11 have dewlap morphologies different from the males of their species. All Caribbean female species with substantial dewlaps (=as big as males) seem to be highly arboreal (not on the ground or lower trunks), but not sure why that would be…

    1. Sounds interesting! I am curious about those 11 Caribbean species in which females differ in dewlaps from males. Can you give me some examples please? Thank you!

Leave a Reply

Your email address will not be published. Required fields are marked *

Optionally add an image (JPEG only)