Hardwicke's bloodsucker

Hardwicke's bloodsucker, scientifically designated as Calotes minor, is a species of agamid lizard native to South Asia. This lizard is known for its distinctive morphology, including a small, stocky build with a pot-belly and a relatively short tail. Its head is notably large and elongated, flattened on top and sloping towards the snout. The dorsal scales are prominent, larger than the ventral scales, strongly imbricate, and keeled, with a characteristic backward and upward pointing orientation. The upper head scales are also larger, unequal, and heavily keeled or tubercular.

Morphology and Coloration

The coloration of Hardwicke's bloodsucker typically features an olive-brown dorsal hue, adorned with three discernible rows of dark-brown spots edged in light colors along the back and the base of the tail. The spots in the middle row are particularly prominent and rhomboidal in shape. Facial markings include a white streak on each side of the neck that bifurcates behind, and an oblique streak extending from the eye to the corner of the mouth. The limbs are marked with dark-brown cross bars. The throat displays profuse spotting of dark-brown and orange, while the belly is yellowish-white marked with numerous orange dots. An unusual characteristic is the ink-blue coloration inside its mouth. Females tend to be larger than males and exhibit more vibrant coloration, especially during the breeding season.

Distribution and Habitat

Hardwicke's bloodsucker is found in several South Asian countries, including Bangladesh (specifically its southeastern regions), India (across states like Madhya Pradesh, Uttar Pradesh, Rajasthan, Gujarat, and Odisha), and Pakistan (in the Sindh province). This species is primarily terrestrial but can also be found in arboreal settings. Its preferred habitats include frequently fragmented dry forests, arid environments, barren deserts, and desolate areas, often situated across the Indo-Gangetic plains.

Behavior and Diet

This lizard is diurnal and crepuscular, meaning it is active during the day and at dawn/dusk. It typically shelters in burrows dug near the roots of thorny bushes. While often observed sitting on stones, it possesses the ability to climb shrubby vegetation. Hardwicke's bloodsucker is characterized by its sluggish movements and a tendency not to attempt escape when approached, indicating a generally docile temperament. Its diet is mainly insectivorous, consisting of grasshoppers and their nymphs, earwigs, beetles, bugs, arthropods, and spiders. In some instances, it has also been observed to consume flowers.

Reproduction and Conservation

Hardwicke's bloodsucker is oviparous, reproducing by laying eggs. The breeding season typically spans from April to June. During this period, females lay four to six hard-shelled white eggs within burrows located beneath the roots of vegetation. Despite its ecological role in controlling insect populations, the species has faced depletion due to baseless reputations of being harmful. However, it is scientifically established as non-venomous and completely harmless to humans. The species name minor itself, derived from Latin, signifies 'less' or 'smaller,' referring to its diminutive size within the agamid family.