A new land snail discovered in New Mexico (USA)

摘要

"What can New Mexico offer a shell collector?" When my wife and I returned to New Mexico in 1994, after 25 years in the US Air Force, I would have answered that question, "Not much." I was aware of a few introduced species: Cornu aspersum (Müller, 1774) (the common brown garden snail often listed as Helix aspersa) (Fig. 1) probably introduced in the early 1940s on rose plants imported from California by the New Mexico Rose Society, or several snails found in ornamental ponds that have not yet gained a foothold in our local water ways despite being commonly found at pet shops and pond suppliers. Species such as Pla-norbarius corneus (Linnaeus, 1758), the ramshorn snail (Fig. 2), or Radix peregra (Müller, 1774) (previously known as Lymnaea peregra), the wandering pond snail (Fig. 3), were what I expected to find in our local streams and ponds.