''Cascoplecia insolitis'', rarely known as the unicorn fly, is an

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

dipteran that lived in the

Early Cretaceous The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 ...

. The

type specimen In biology, a type is a particular wikt:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. In other words, a type is an example that serves to ancho ...

was found in

Burmese amber Burmese amber, also known as Burmite or Kachin amber, is amber from the Hukawng Valley in northern Myanmar. The amber is dated to around 100 million years ago, during the latest Albian to earliest Cenomanian ages of the mid-Cretaceous period. Th ...

. George Poinar Jr., who described the fossil, placed the genus into a new family Cascopleciidae. One of the defining characteristics of ''Cascoplecia'' is the presence of three ocelli raised on an extended, horn-like protuberance. The distinctiveness of the family was questioned by other authors, and the genus has been subsequently transferred to the family

Bibionidae Bibionidae (March flies) is a Family (biology), family of Fly, flies (Fly, Diptera) containing approximately 650–700 species worldwide. Adults are nectar feeders and emerge in numbers in spring. Because of the likelihood of adult flies being f ...

.Thomas Pape, Vladimir Blagoderov & Mikhail B. Mostovski. 201
Order DIPTERA Linnaeus, 1758.
In: Zhang, Z.-Q. (Ed.) Animal biodiversity: An outline of higher-level classification and survey of taxonomic richness. Cascoplecia insolitis

References

Bibionomorpha genera Fossil taxa described in 2010 Cretaceous insects of Asia Burmese amber Fossils of Myanmar † Taxa named by George Poinar Jr. {{diptera-stub