Juglans regia
The scientific name for Black Spruce is Picea mariana.
The scientific name of a black scorpion is usually "Androctonus australis."
The Simuliidae is the scientific name for a black fly. Most people just call these black flies black flies though.
The scientific name of black gram is Vigna mungo, also known as urad bean or black lentil.
The scientific name for black walnut is Juglans nigra.
Juglansnigra, I found it on http://faculty.ucc.edu/biology-ombrello/POW/black_walnut.htm
The Hindi name for black walnut is "เคเคพเคฒเฅ เค เคเคฐเฅเค" (kali akhrot).
Walnut is the common name, Juglans is the scientific name, see link below.
The scientific name would be Aleurites trisperma.
The accepted scientific name is Datana integerrima.
The accepted scientific name is Laothoe juglandis.
Juglans regia
The accepted scientific name is Citheronia regalis.
The accepted scientific name is Acrobasis demotella.
Juglans regia
The scientific or taxonomic name would be Datana integerrima.