HAINOTINAE FASSIO, BOUCHET, SCHIAPARELLI & OLIVERIO, 2023
publication ID |
https://doi.org/ 10.1093/zoolinnean/zlac091 |
publication LSID |
lsid:zoobank.org:pub:6DBA2650-DB10-4BDC-AEDB-2EF08D82815E |
DOI |
https://doi.org/10.5281/zenodo.7814332 |
persistent identifier |
https://treatment.plazi.org/id/8C6587D7-FFAD-FFE9-1508-7403FDE55B58 |
treatment provided by |
Plazi |
scientific name |
HAINOTINAE FASSIO, BOUCHET, SCHIAPARELLI & OLIVERIO |
status |
subfam. nov. |
HAINOTINAE FASSIO, BOUCHET, SCHIAPARELLI & OLIVERIO SUBFAM. NOV.
( FIGS 2 View Figure 2 , 3 View Figure 3 , 4G View Figure 4 , 6B View Figure 6 )
Zoobank registration: urn: lsid: zoobank. org:act: A356DC93-B469-4DC0-B075-ED51CAEBDAA4
Type genus: Hainotis F. Riedel, 2000 View in CoL .
Included genera: Hainotis F. Riedel, 2000 , Mysticoncha J. K. Allan, 1936 .
Description: Body of small to medium size, 0.5– 5.0 cm total length. Shell thin to very thin, weakly calcified, ear shaped, high spire, with expanded aperture, smooth, with or without growth lines, completely enclosed by the mantle. Periostracum thin to moderately developed and hairy.
Protoconch of 1.7–2.1 whorls; protoconch I of 0.6 whorls, smooth or with weak growth striations, nucleus diameter 86 µm; protoconch–teleoconch boundary not always distinct.
Mantle dome shaped, outline rounded or polygonal (low ridges dividing the mantle into six areas, from a raised hexagonal area at the centre of the dorsum); thin to thick; with anterior elongated siphonal fold; colour highly variable, almost transparent to white, grey, beige, yellow, orange, red, violet, brown or black, frequently patterned with dots and/or polygonal shape lines.
Penis and vas deferens unknown.
Radula taenioglossate, formula 2:1:1:1:2; rachidian tooth elongated, with rectangular base; rachidian cusp with two external denticles on each side; lateral teeth elongated, with a pointed external cusp, with one denticle on the internal side and two on the external side; marginals narrow, with one small denticle on the internal side.
Jaws elongated, with masticatory denticles.
Distribution: North-eastern Pacific (from Oregon to northern Mexico), South Australia, New Zealand; 0–45 m deep.
Remarks: This subfamily is represented in the phylogenetic tree only by specimens of Hainotis sharonae described from the coast of California (type locality: Anaheim Bay, Orange County, CA, USA; Willett, 1939). This lineage is diagnosed by its shell with a higher spire, a radular formula of 2:1:1:1:2 with elongated central and lateral teeth, and an elongated anterior siphonal fold.
Pending further molecular analysis, we suggest also including the genus Mysticoncha in this subfamily because its radular formula and shape, shell shape, siphon shape and temperate distribution (South Australia, Victoria and New Zealand) are consistent with those of the type genus, Hainotis .
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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