tautonym
noun
taut·o·nym ˈtȯ-tə-ˌnim 
: a taxonomic binomial in which the generic name and specific epithet are alike and which is common in zoology especially to designate a typical form but is forbidden to botany under the International Code of Botanical Nomenclature
tautonymy
tȯ-ˈtä-nə-mē
noun 
Example Sentences
Recent Examples on the Web Others have what's called a tautonym, a name in which the same word is used for both species and genus. 
National Geographic, 9 Apr. 2016
National Geographic, 9 Apr. 2016 Word History
First Known Use
1899, in the meaning defined above
- rectangular hyperbola
- rectangular parallelepiped
- rectangularities
- rectangularity
- rectangularly
- rectangulometer
- recti
- recti-
- rectifiabilities
- rectifiability
- rectifiable
- rectification
- rectifications
- rectificator
- rectified
- rectified spirit
- rectifier
- rectifier instrument
- rectifiers
- rectifies
- rectify
- rectifying
- rectigrade
- rectilineal
- rectilinear