Genus Mckenzieana nom. n.

Helaspis McKenzie 1963: 34 (Mandibulata: Hexapoda: Hemiptera: Diaspididae) is preoccupied by Helaspis Imbrie 1959: 400 (Brachiopoda: Strophomenata: Productida: Productellidae).

Type species: Helaspis mexicana McKenzie, 1963: 34 .

Remarks on nomenclatural change. McKenzie (1963) established the armoured scale genus Helaspis with the type species Helaspis mexicana McKenzie 1963 . The genus is a valid name in Hemiptera: Coccomorpha: Diaspididae, subfamily Aspidiotinae, tribe Aspidiotini (Normark et al. 2019) . The genus includes only the type species, recorded from Mexico.

Unfortunately, the name Helaspis McKenzie 1963 is preoccupied by Helaspis Imbrie 1959, a fossil marine brachiopod genus (Brachiopoda: Strophomenata: Productida: family Productellidae) based on the type species Helaspis luma Imbrie 1959 . Thus, Helaspis McKenzie 1963 is a junior homonym of Helaspis Imbrie 1959 . According to Article 60 of the International Code of Zoological Nomenclature, a new replacement name is proposed for Helaspis McKenzie 1963: Mckenzieana nom. n.

Etymology. The replacement name for the genus is derived from the name H.L. McKenzie, the author of the armoured scale insect genus Helaspis; gender feminine.