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The Landseer's black and white coloration arises from the recessive piebald color allele found in Newfoundlands; the piebald coloration is a recessive trait so a single litter can have both Landseer and solid-colored puppies, depending on the genotype of the parents. [4]
An all-white dog or a dog with no white is disqualified from the conformation show ring. A blaze (area of white extending down between the eyes) and noseband is preferred over a solid-colored head, but not required. Nose, eye rims, and lips should be black. Paw pads vary in color from black to pink, depending on the coloring of the dog.
His book is no longer in print, but used copies are available at booksellers. Barcant gives each species an English common name, but many of these were never taken up. Barcant's English name and the more widely accepted English name are given in the list below. Since 1970 many of the Latin names used by Barcant have also changed.
Neophasia menapia – pine white; Pontia beckerii – Becker's white; Pontia sisymbrii – spring white; Pontia protodice – checkered white; Pontia occidentalis – western white; Pieris angelika – Arctic white; Pieris marginalis – margined white; Pieris oleracea – mustard white; Pieris virginiensis – West Virginia white; Pieris rapae ...
Black-veined white on the red clover. Aporia crataegi, the black-veined white, is a large butterfly of the family Pieridae. A. crataegi is widespread and common. Its range extends from northwest Africa in the west to Transcaucasia and across the Palearctic to Siberia and Japan in the east. In the south, it is found in Turkey, Cyprus, Israel ...
Siproeta epaphus, the rusty-tipped page or brown siproeta, [1] is a New World butterfly that lives all year in tropical habitats. It has large wings, averaging 7.0–7.5 cm (2.8–3.0 in), [1] that are black in the inner portion of the top surface and brown throughout the underside. Both surfaces have a bold white transverse stripe continuing ...
Zerene cesonia, the southern dogface, is a North and South American butterfly in the family Pieridae, subfamily Coliadinae (until recently the species was sometimes placed in the related genus Colias instead of Zerene).
Forewings and hindwings: basal half shaded and marked with brown, with an angulated transverse broad brown median fascia and a postdiscal transverse brown shading; on the hindwing traversed by a series of obscure dark spots; on the hindwing traversed by a series of obscure dark spots; on the forewing with three, sometimes four, minute subapical ...