Pseudocalotes Species Overview and Geographic Distribution

Pseudocalotes species are a type of lizard found in Southeast Asia.

They are part of the Agamidae family, which is a large and diverse group of lizards.

Pseudocalotes species are known for their vibrant colors and patterns, which serve as a form of communication and camouflage.

Some species of Pseudocalotes have distinctive markings on their heads and necks, while others have more subtle coloration.

These lizards are typically found in tropical forests and grasslands, where they can be seen basking in the sun or foraging for food.

Pseudocalotes was disassociated from the genus Calotes by Scott Michael Moody in 1980. This separation is a significant distinction in the world of taxonomy.

The genus Pseudocalotes is characterized by its weak limbs, as seen in species like Pseudocalotes brevipes. These limbs are noticeably fragile.

One of the key differences between Pseudocalotes and the C. versicolor group is the orientation of their dorsal scales. Pseudocalotes species have mixed orientation, whereas the C. versicolor group does not.

Pseudocalotes species also lack spines on their heads, setting them apart from other genera.

Pseudocalotes can be found in Southeast Asia, specifically in the region east of Sumatra.

The species does not occur west of Sumatra, which means it's not found in the western part of the island.

Pseudocalotes may also be present in the Isthmus of Kra and Myanmar.

The geographic range of certain species can be quite fascinating. Pseudocalotes does not occur west of Sumatra.

The Isthmus of Kra and Myanmar are also within its potential range. A specimen was reported from northeastern India in the past, but it was never verified.

Some species are found within the Sundaland group, which is a region that includes parts of Southeast Asia.

Figures provide a visual representation of geographic information, and in this case, they depict the physical characteristics of three lizard species: Pseudocalotes cybelidermus, P. guttalineatus, and P. rhammanotus.

The gular region of these lizards is quite distinct, with Pseudocalotes rhammanotus having a head width of 10.1 mm, significantly larger than its counterparts.

FIGURE 4 shows the gular region of these lizards, highlighting their unique features. Pseudocalotes cybelidermus has a head width of 7.3 mm, while P. guttalineatus has a head width of 8.1 mm.

The cephalic morphology of Pseudocalotes guttalineatus and P. rhammanotus is also noteworthy, with the former having a head length of 20.7 mm.

FIGURE 7 illustrates the cephalic morphology of these lizards, showcasing their distinctive characteristics. Heavily keeled scales and a similar antehumeral scale are just a few of the features that set them apart.

The holotype of Pseudocalotes rhammanotus, MZB 10804, is a significant specimen, measuring 67.9 mm in SVL and originating from the montane forest above Danau Ranau in Lampung, Sumatra.

FIGURE 9 provides a visual representation of this holotype, giving us a glimpse into the natural habitat of this species.

Pseudocalotes is a genus of lizards that belongs to the family Agamidae. There are over 20 species of Pseudocalotes, which can be found in Southeast Asia, specifically in countries such as Indonesia, Malaysia, and Thailand.

Some species of Pseudocalotes are known for their distinctive characteristics, such as the green crestless forest lizard (Pseudocalotes andamanensis), which is found on the Andaman Islands. Others, like the Vietnamese false bloodsucker (Pseudocalotes brevipes), have specific geographical ranges, such as northern Vietnam.

The genus Pseudocalotes is divided into several species groups, including the P. cybelidermus Group and the P. tympanistriga Group. These groups are defined by specific morphological characteristics, such as the number of interoculabials (Pseudocalotes typically have 3 or 4) and the shape of the scales on the lower flanks.

Here is a list of some Pseudocalotes species and their characteristics:

The Pseudocalotes genus has undergone significant revisions in recent years, with some species being reclassified or new species being described. For example, the new species Pseudocalotes jingpo was described in 2024, and the P. cybelidermus Group was defined based on phylogenetic analysis of DNA sequences.