The upper surface is pale greyish-brown contrasting sharply with the dark brown sides and the unspotted white or yellowish belly.

[4] Horvath's rock lizard is native to northwestern Croatia, Slovenia and the adjoining parts of northeastern Italy and southern Austria.

It may be under-reported because of its close resemblance to the more common wall lizard Podarcis muralis with which it co-exists in the lower part of its altitudinal range.

The typical habitats of I. horvathi are cliffs, rocky outcrops, karst pavements, boulder fields, alpine scrub, damp open woodland, embankments, and bridges.

Horvath's rock lizard feeds on a range of small invertebrates including flying forms.