Pupa affinis

Pupa affinis is a species of small sea snail, a marine gastropod mollusc in the family Acteonidae. It is found in the waters around the North Island of New Zealand.^[1][2]

Pupa affinis
A shell of Pupa affinis
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Family:	Acteonidae
Genus:	Pupa
Species:	P. affinis
Binomial name
Pupa affinis (A. Adams, 1855)
Synonyms[1]
Acteon pilsbryi Cossmann, 1902 Buccinulus albus Hutton, 1873 Buccinulus fraterculus Dunker, 1882 Buccinulus gracilis Kirk, 1882 Buccinulus intermedius Angas, 1879 Buccinulus kirki Hutton, 1873 Buccinulus niveus Angas, 1871 Buccinulus strigosus Gould, 1859 Pupa kirki (Hutton, 1873) Pupa nivea (Angas, 1871) Pupa strigosa sekii Habe, 1958 Pupa thaanumi Pilsbry, 1917 Solidula affinis A. Adams, 1855 (basionym) Tornatella fumata Reeve, 1865

Description

The shell is 15 mm in length and is usually white, beige, or brown, with or without black markings. It is egg shaped (ovate) with an elevated spire. The columella or central axis of the shell has a large double fold.^[3]

Synonyms

• Pupa nivea Angas, 1871 : synonym of Pupa affinis (A. Adams, 1855)
  • Distribution : West Australia
  • Length : 14 mm
  • Description : slender, elongate shell with sharp apex; white colored with numerous fine spiral grooves.
• Pupa strigosa Gould, 1859
  • Distribution : Indo-West Pacific, Japan, Taiwan, South China Sea
  • Length : 13 mm
  • Description : intertidal to 100 m in sand; white-colored with many black spiral grooves.
• Pupa strigosa sekii Habe, 1958
  • Distribution : Japan

A synonym of this species, described for science by Frederick Hutton, may have been named for New Zealand cephalopod biologist Thomas William Kirk, or his father Thomas Kirk, curator of the Auckland Museum.^[4]