Obituary.—James Francis Stephens

G. Gayle Stephens Festschrift.

Francis Barr

influenza programme chief, reported an increase in the number of cluster cases reported recently, with the biggest being a family of five cases. There have been seven cluster cases in Vietnam, all within single families, most recently in the northern province of Haiphong. No relative has been proved to have passed the disease to another in these cases but, Horby said, " the onset dates could be...

Francis Wolenski

Two new species of Quedius Stephens, subgenus Raphirus Stephens from Yunnan, Southwest China (Coleoptera, Staphylinidae, Staphylinini)

Two new species of the genus Quedius Stephens collected from Nabanhe Nature Reserve, Yunnan Province, Quedius nabanhensissp. n. and Quedius maoxingisp. n., are described and illustrated. Keys to the multipunctatus group and intricatus group of Quedius species of Yunnan are provided. A map of the collecting sites is given.

Pritchard, Stephens, and Donnelly on Population Structure.

In essentially any species, genetic similarity among individuals is structured by the existence of subgroups and geographic isolation. For researchers, understanding this population structure can be of direct interest, a necessary waystation to further analyses, or a confounding nuisance. Regardlessof themotivation,understandingpopulation structure is an essential step for population genetic an...