Atys ukulele Too & Carlson & Hoff & Malaquias 2014, nov. sp.
Creators: name: Too, Chin Chin
name: Carlson, Clay
name: Hoff, Patty Jo
name: Malaquias, Manuel António E.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Cephalaspidea
Haminoeidae
Atys
Atys ukulele

description: Atys ukulele nov. sp.
Type locality. Black Rock, Maui Island, Hawaii
Etymology. This species is only known from Hawaii and we named it after a traditional musical instrument of these islands, the ukulele guitar, a “derived form” of the Portuguese “cavaquinho” guitar introduced in Hawaii during the 19 th century by Portuguese immigrants.
Material examined. Maui, Hawaii, 1 spc. dissected, ZMBN 89710, H = 5.4 mm. Black Rock, Maui, Hawaii, 1 spc. sequenced, ZMBN 89707 (holotype), H = 3.5 mm. Black Rock, Maui, Hawaii, 1 spc., ZMBN 89708 (paratype), H = 4.2 mm. Black Rock, Maui, Hawaii, 1 spc., ZMBN 89709 (paratype), H = 3.1 mm.
Animal (Fig. 1G): Body whitish-translucent, white dots scattered over the body, more dense on edges and mid part (between mouth and eyes) of cephalic shield, forming light yellowish blotches on the mantle, dark dots scattered over the parapodial lobes; eyes visible, inserted on unpigmented periocular areas.
Barcode: GenBank Accession No KF735658 (ZMBN 89707).
Shell (Figs 3A, 13A, B): Maximum height 5.4 mm; whitish; fragile, semi-translucent, barrel-shape, elongated, widest right below the mid-line, anterior end protruded, posterior end truncated; spire sunken, outer lip elevated above the apex, aperture narrow posteriorly and slightly broader anteriorly, umbilicus present; step-like spiral grooves at both ends (anterior = 11, posterior = 11), which become closer towards the ends, faint bands at the middle part.
Jaws: Present, crescent shape.
Radula (Figs 13D–G): Radular formula at mid-point 23 x 6.1.6; median tooth bilobed with broad base, and conspicuous denticulation along edge, shorter triangular lateral cusps present; outer lateral teeth hook-shaped, broad base with semi-circular projection outwardly, groove along inner margin, weak denticulation along outer margin, size decreases outwardly. There is no differentiation between inner and outer lateral teeth.
Gizzard plates (Figs 13H, I): Three gizzard plates; long and narrow; 18 ridges on each side of pseudo-rachis, ridges covered by single rows of tiny rods with pointed tips along top edge of ridges, both anterior and posterior sides of ridges smooth.
Male reproductive system: Unknown.
Ecology. Sandy bottom between 6–17 m deep (present study).
Geographical distribution. Maui, Hawaii (present study).
Remarks. This species has a bulloid shell more elongated than Atys semistriatus. The colour patterns of Atys semistriatus and Atys ukulele nov. sp. are distinct. The former has large conspicuous red blotches in the mantle and dark spots scattered over the cephalic shield, whereas Atys ukulele has a mantle pigmented with faint, almost inconspicuous yellowish blotches and a cephalic shield with white dots along the edges and between the eyes. Moreover, Atys ukulele has a distinct radular median tooth, slightly bilobed with the presence of conspicuous denticulation along the margin. The reproductive system was damaged during dissection hindering comparison with Atys semistriatus.
description: Published as part of Too, Chin Chin, Carlson, Clay, Hoff, Patty Jo & Malaquias, Manuel António E., 2014, Diversity and systematics of Haminoeidae gastropods (Heterobranchia: Cephalaspidea) in the tropical West Pacific Ocean: new data on the genera Aliculastrum, Atys, Diniatys and Liloa, pp. 355-392 in Zootaxa 3794 (3) on page 377, DOI: 10.11646/zootaxa.3794.3.3, http://zenodo.org/record/4914927