Dear readers of Anole Annals,
Last year, I posted here requesting photos of extended dewlaps of adult male anoles of any species, for use in a study of the relationship between dewlap size and speciation rate. I thank all the readers who sent in one or a few photos, as well as the prolific photographers who have contributed many more. I even chipped in a few of my own photos last summer in Puerto Rico:
Thanks to everyone’s contributions, I’m up to around 185 species, even better than I’d hoped for. Before I start the analyses, I wanted to put out another call for photos, to see if anyone who missed the first post can help to fill in some of the species that are still missing from the collection.
As before, I’m looking for any side-view photos of adult male anoles with fully extended dewlaps. The only essential information is the species identification and a measure of scale (ideally a ruler or grid in the photo), though if you have the snout-vent length and collection locality, those are appreciated. I’ll only use the photos to digitize some simple measurements of dewlap and head size, and I won’t share them without your permission.
Below is a list of the species I’m still missing – some of them are quite rare, I know – grouped by where they live: island of the Greater Antilles, small island, or mainland. I could also use additional photos of almost any anole not listed here, aside from a couple of dozen very common species. Please let me know if you have any photos to contribute – you can send them by e-mail, or get in touch first so I can send you a Dropbox link for numerous or large files.
Thanks!
- A Hierarchy of Niches in Puerto Rican Anoles - July 27, 2022
- Puerto Rican Anole Diet Samples Available to a Good Home - October 19, 2018
- Anoles Are Habitat Specialists at the Individual Level Too - January 16, 2017
Martha Muñoz
I know that Rich Glor has A. longitibialis. There’s a shot available on the EOL page for this species: http://eol.org/pages/1057166/overview
Mark Yokoyama
I can get you some of gingivinus and pogus. I have various photos already, but none with a ruler. I feel that it should be possible to use EXIF data to estimate size based on the camera lens and subject distance, but I have never seen a utility to do that. richardii has a gigantic dewlap: http://www.flickr.com/photos/59206851@N00/9429076397/
Travis Ingram
Hi Mark, that would be great. I hadn’t thought about using camera data to extract size, but it might work – alternatively, if you know the SVL of the specimens, I can back-estimate the head length and get a scale from that. It would be great to have better representation of the Lesser Antilles, so please do send along any relevant photos you can, thanks! (let me know if you need a DropBox link instead of email)
Mark Yokoyama
I don’t actually capture them (because I don’t have a reason to), so I don’t have SVL, but I will see if I can figure out a way to measure distance from a photo with my specific camera setup, and what range of accuracy I can expect from this sort of extrapolation. It might be okay for short distances.
Mark Yokoyama
But, I will capture some of the species that are here and get photos with scale in them for you.
Mark Yokoyama
Did a quick test. EXIF on my camera/lens only records the subject distance to 10mm increments, it seems. It’s not very useful very close up, but is maybe not so bad for estimating at around 1/2 meter distances. Posting a chart of how many pixels wide 1/2 inch is at different subject distances.
Mark Yokoyama
Actually, maybe rather than figuring out the math, it would be easier to take photos of a ruler at different distances and plot them out. I think it is possible that for macro photos with a shallow depth of field and a close subject it might be possible to be pretty accurate. Maybe even in the same ballpark as a ruler that is in the same photo but not in the plane of focus.
K.ra
Can you use creative commons licensed photos (from Wikimedia Commons)? If so then photos of Anolis chrysolepis from Chaguaramus,Trinidad and a photo of Anolis oculatus from Coulibistrie, Dominica are avaliable.I hope these can help, Just remember to inform and credit the authors if you use them.