The

Holarctic The Holarctic realm is a biogeographic realm that comprises the majority of habitats found throughout the continents in the Northern Hemisphere. It corresponds to the floristic Boreal Kingdom. It includes both the Nearctic zoogeographical region ...

''Drosophila populi''

species group In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each oth ...

belongs to the subgenus ''

Sophophora The paraphyletic subgenus ''Sophophora'' of the genus ''Drosophila'' was first described by Alfred Sturtevant in 1939. It contains the best-known drosophilid species, ''Drosophila melanogaster''. ''Sophophora'' translates as carrier (''phora'') ...

'' and contains two species, '' Drosophila ingrica'' and '' Drosophila populi''. ''D. ingrica'' is found in the

Palearctic The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Sibe ...

, while ''D. populi'' is found in the

Nearctic The Nearctic realm is one of the eight biogeographic realms constituting the Earth's land surface. The Nearctic realm covers most of North America, including Greenland, Central Florida, and the highlands of Mexico. The parts of North America t ...

. Both species are found in the northernmost

subarctic The subarctic zone is a region in the Northern Hemisphere immediately south of the true Arctic, north of humid continental regions and covering much of Alaska, Canada, Iceland, the north of Scandinavia, Siberia, and the Cairngorms. Generally, ...

forest zone, and are strongly associated with cottonwood trees.Vilela, C. R., and G. Bächli. 2009. Redescription of the Alaskan species ''Drosophila populi'' (Diptera, Drosophilidae). Mitteilungen der Schweizerische Entomologischen Gesellschaft 82:259-269.

References

populi species group Insect species groups {{Drosophilidae-stub