### Identification A true heavyweight among Indian geckos, *Hemidactylus aaronbaueri* is a robust, large-bodied lizard reaching an impressive snout-to-vent length of nearly 130mm. To identify it in the field, look for its distinctive "warty" texture; its dorsal surface is crowded with 16–18 longitudinal rows of prominent, trihedral (three-sided) tubercles that give it a rugged, armored appearance. Its coloration is a sophisticated palette of sandy tan or light grey, marked by four to five dark, irregular transverse bands that often form jagged "M" shapes across the spine. Unlike the slender common house gecko, this species has a noticeably broad, heart-shaped head and thick, muscular limbs adapted for gripping vertical stone.
### Habitat & Range This species is a specialist of the rugged basaltic landscapes of the Northern Western Ghats in Maharashtra, India. It is most frequently encountered on massive boulders, sheer rocky escarpments, and the weathered stone walls of ancient hill forts at elevations between 250 and 1,000 meters. It largely avoids dense canopy forests, preferring the open, sun-baked rocky plateaus (sadas) where deep crevices provide thermal stability.
### Behaviour Strictly nocturnal, Aaron Bauer’s House Gecko is a "crevice-dweller" that emerges at twilight. It is a patient ambush predator, often seen clinging motionless to vertical rock faces with its head pointing downward, scanning for movement. While generally solitary and highly territorial, males become vocal during the breeding season, emitting a series of loud, rhythmic "tchak-tchak-tchak" calls that echo off the rock walls to warn rivals and attract females.
### Diet An opportunistic and powerful insectivore, it targets large arthropods that frequent rocky outcrops. Its diet primarily consists of crickets, large moths, and beetles. Due to its size and powerful jaw pressure, it is also known to occasionally predate on smaller species of geckos.
### Fascinating Fact Despite being one of the largest and most striking geckos in Western India, this species remained completely "hidden" from science until 2008! It was named in honor of Dr. Aaron Bauer, a legendary herpetologist who has discovered and described more gecko species than almost anyone in history.