''Archaeterphis'' is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus of small-headed flies in the family Acroceridae. It is known from

Baltic amber The Baltic region is home to the largest known deposit of amber, called Baltic amber or succinite. It was produced sometime during the Eocene epoch, but exactly when is controversial. It has been estimated that these forests created more than 1 ...

from the

Eocene The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene' ...

, though the locality is unknown (possibly

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

). It contains only one species, ''Archaeterphis hennigi''. The generic name is a combination of the Greek word ''Arche'' (beginning) and ''Terphis'', referring to the possible close relationship of ''Archaeterphis'' with the extant genera '' Africaterphis'' and '' Terphis''. The species is named in honor of

Willi Hennig Emil Hans Willi Hennig (20 April 1913 – 5 November 1976) was a Germans, German biologist and zoologist who is considered the founder of Phylogenesis, phylogenetic systematics, otherwise known as cladistics. In 1945 as a POWs in World War II, p ...

References

† Prehistoric Diptera genera † † Baltic amber Eocene insects {{Nemestrinoidea-stub