Review of the genus Saemundssonia Timmerman (Phthiraptera: Philopteridae) from the Alcidae (Aves: Charadriiformes), including a new species and new host records

We describe the new species Saemundssonia boschi recently collected from Least Auklets {Aethia pusilla (Pallas)) in Alaska and review the 11 names previously applied to Saemundssonia Timmermann species from alcids. Saemundssonia procax (Kellogg and Chapman) is relegated to a new junior synonym of S. grylle (O. Fabricius). along with the previously recognized junior synonym S. megacephalus (Denny). The nine previously described valid species are redescribed and illustrated and four new host records are documented from alcids. Finally, a key is provided for the identification of the ten recognized species of alcid Saemundssonia.