monotypic

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monotypic

(of a TAXON) containing only one subordinate taxon. For example, a genus with only one species, a species with only one subspecies.
References in periodicals archive ?
Type species Azotus marchali Howard, by monotypy. Synonymy by Girault, 1913: 189.
Type species: Chiton fascicularis Linnaeus, 1767, by monotypy. For synonymy, see Gowlett-Holmes (2001).
Type Species: Ectopioglossa australensis Perkins, 1912 [= Eumenes australensis Meade-Waldo, 1910 = Ectopioglossa polita australensis (Meade Waldo)], by monotypy.
Planctanthias Fowler, 1935: 385 (type-species Planctanthias preopercularis Fowler, 1935 [= Pseudanthias cooperi (Regan, 1902)] by original designation and monotypy).
Type-species: Acanthognathus ocellatus Mayr 1887: 579, by monotypy.