Holcosus leptophrys
—
Delicate Ameiva
This species was recently moved into the genus Holcosus; it was formerly known as Ameiva leptophrys.
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I first noticed this large and colorful male rustling through the leaf litter on the shaded forest floor. I thought it was some sort of medium-sized rodent until it popped up its head and moved on to the next promising-looking leaf pile. After some more poking and prodding through the leaves, it finally decided to bask briefly in a sun patch, where I got this overly high-contrast photo.
Trail from Esquinas Rainforest Lodge, Golfito region, Puntarenas province, Costa Rica—September 26, 2001
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The common name for this beefy ameiva seems ill-chosen. We came across several adults basking in sun spots on the forest trail, but I never managed to get a photo before they ran off. A few feeble attempts to capture them failed miserably. The one pictured here is a juvenile.
Here is a complete list of the species we found on this GreenTracks trip.

We saw a few of these attractive ameivas zipping around open areas of the forest behind the hotel. This was the only one that sat still long enough for a photo.
Online references:
- Holcosus leptophrys account on iNaturalist
- The species list from a 2000 GreenTracks trip to this same area includes a photo of this species.
Printed references:
- Köhler, G. 2008. Reptiles of Central America, 2nd Edition
- Savage, J. M. 2002. The Amphibians and Reptiles of Costa Rica
- Savage, J. M., Villa R., J. 1986. Introduction to the Herpetofauna of Costa Rica