Many McGregor's pit vipers are strongly patterned.
This is another of today’s choose your name species. This beautiful and variable pit viper from the Philippine islands of Batan and Sabtang (perhaps introduced to other locales) has gone from its 1913 described name of Trimeresurus mcgregori (named for the collector of the first specimen who just happened to receive and survive a bite) to Trimeresrus flavomaculatus mcgregori, then to Parias mcgregori, and now back to the starting name, T. mcgregori.

This is one of the more variably colored pit vipers, ranging from solid brown to a pure silvery white and having many shades of yellow and a few differing patterns between those 2 extremes. It is adult at about 3 feet in length. It is an oviparous species.

Protected in its Philippine homeland and the relatively few captives having proven problematic to breed, this beautiful pit viper is not a frequently seen species in collections. As would be expected, when on the rare occasions this taxon does become available, the prices asked are often out of range for all but the most dedicated of venomous keepers.