小臭鼩分类地位的探讨及西藏自治区兽类一新纪录属OA

Suncus etruscus(Savi 1822)is among the smallest known mammals.In October 2024,a specimen of the ge-nus Suncus was collected from Delgong Village(29°08′32″N,95°15′29″E)in Motuo County,Nyingchi City,Xizang Au-tonomous Region.This represents the first record of the genus Suncus in Xizang.The external morphology of the speci-men is generally consistent with previous descriptions of S.etruscus.However,phylogenetic analysis based on mito-chondrial Cyt b gene showed that this specimen clusters with the clade formed by S.malayanus and S.fellowesgordoni,with average genetic distances of 8.5％and 8.9％,respectively.The genetic distance between this specimen and the near-type-locality sample of S.etruscus from Italy was 10.3％,indicating a significant genetic divergence.This finding suggests that the S.etruscus distributed in China has certain differentiation from those in other regions.Given the rarity of specimens,the taxonomic status of the species in China needs to be further studied.Additionally,in 2022,we re-ceived a S.etruscus specimen from Jammu and Kashmir.Phylogenetic analysis based on the mitochondrial Cyt b gene revealed that it forms a monophyletic clade with the Madagascan subspecies of the Etruscan shrew(S.e.madagas-cariensis),with an average genetic distance of 1.6％.We confirm that the specimen from Pakistan is S.e.madagas-cariensis.