The first non-American representatives of the bark beetle genus Pseudopityophthorus, of the subtribe Corthylina (Corthylini), and of the Ips concinnus species group are named. All are apparently relicts of an early faunal exchange with North America. The new taxa include: Gnatharus, new genus, and its type-species Gnatharus tibetensis, new species (Tibet); Xenophthorus, new subgenus, and its type-species Pseudopityophthorus (Xenophthorus) peregrinus, new species (Tibet), and Ips orientalis, new species (Tibet, China). The intercontinental exchange of other taxa in Scolytidae are also mentioned.
Wood, Stephen L. and Yin, Hui-fen
"Relict occurrence of three "American" Scolytidae (Coleoptera) in Asia,"
Great Basin Naturalist: Vol. 46
, Article 13.
Available at: http://scholarsarchive.byu.edu/gbn/vol46/iss3/13