Wed May 21 23:30:00 UTC 2025: **News Article:**
**Zoological Survey of India Clarifies Identity of Persian Long-Tailed Desert Lizard After 153 Years**
**Kolkata, May 22, 2025** – Scientists at the Zoological Survey of India (ZSI) have resolved a long-standing ambiguity surrounding the Persian long-tailed desert lizard, *Mesalina watsonana*, over a century and a half after its initial description.
The lizard, first identified as *Eremias (Mesalina) watsonana* in 1872 by naturalist Ferdinand Stolickza from specimens found in Sindh (present-day Pakistan), has been a crucial species in the study of desert lizard diversity across South and Central Asia. However, confusion arose due to the multiple specimens used to define the species being scattered across museums in Kolkata, London, and Vienna.
ZSI scientists Sumidh Ray and Pratyush P. Mohapatra have now designated ZSI-R-5050, one of Stolickza’s original specimens housed at the ZSI in Kolkata, as the definitive “lectotype.” This single type specimen clarifies the species’ identity and will serve as a reference point for future research.
“Stoliczka’s material is foundational,” said Dhriti Banerjee, Director of ZSI. “The ZSI holds many of his type specimens that remain central to reptile taxonomy in South and Central Asia. Validating and anchoring these names is not just about scientific clarity, but also about honouring a legacy of discovery.”
The designation, published in the peer-reviewed journal *Zootaxa*, highlights the significance of historical collections like Stolickza’s, which were gathered during British Geological Survey of India expeditions and represent some of the earliest systematic herpetofaunal documentation in the region. It is expected to strengthen future research on species complexes within the *Mesalina* genus.
First Piper 