| Subspecies | Taxon author | Common name | Geographic range |
|---|---|---|---|
| G. i. caucasicus | (Nikolsky, 1916) | Caucasian pit viper | Mostly in the mountainous regions southwest, south and southeast of the Caspian Sea. Also in southeastern Azerbaijan, southern Turkmenistan, northern Iran and extreme northwestern Afghanistan. Elevational range is from below sea level (near the southern shore of the Caspian Sea) to at least 3,000 m in the high Lar Valley in the Elburz mountains of northern Iran. |
| G. i. intermedius | (Strauch, 1868) | Central Asian pit viper | Central Asia from Kyrgyzstan, eastern Kazakhstan and Sinkiang (in China) to Mongolia and southern Siberia east to the western slopes of the Greater Khinghan Mountain Range and the Torey Lakes region near the common border of China, Mongolia and Russia. |
| G. i. stejnegeri | (Rendahl, 1933) | Gobi pit viper | The edge of the Gobi Desert in southeastern Inner Mongolia south into China as far as northern Shansi and Hopeh. |
Read more about this topic: Gloydius Intermedius