Acromegalomma, nomen novum

Gil, Joao & Nishi, Eijiroh, 2017, Nomenclatural checklist for Acromegalomma species (Annelida, Sabellidae), a nomen novum replacement for the junior homonym Megalomma Johansson, 1926, ZooKeys 677, pp. 131-150 : 133-134

Genus Acromegalomma, nomen novum

Branchiomma [not Kölliker, 1858] - Claparède 1869: 162-163.

Megalomma [junior homonym, not Westwood, 1842] - Johansson 1926: 9-10; Johansson 1927: 130; Perkins 1984: 351-352; Fitzhugh 1989: 76; Knight-Jones 1997: 314; Fitzhugh 2003: 107; Tovar-Hernández and Salazar-Vallejo 2008: 1953-1954; Giangrande and Licciano 2008: 208; Capa and Murray 2009: 204-205; Tovar-Hernández and Carrera-Parra 2011: 14-15; Mikac et al. 2013: 1514; Capa et al. 2014: 27-28; Giangrande et al. 2015: 522-523.

Type species.

The type species of the new genus is Branchiomma koellikeri Claparède, 1869 (junior synonym of Sabella lanigera Grube, 1846), according to recommendation 60A of the ICZN (1999). Type by monotypy, established by Johansson (1926).

Type material.

Following his principle of basing observations and descriptions only on live organisms Édouard Claparède did not designate type material or deposit specimens in museums or collections ( Fauchald 1989). However, Knight-Jones (1997) refers the existence of a type of Branchiomma koellikeri Claparède, 1869 deposited at the Zoological Museum of Berlin (currently the Museum für Naturkunde Berlin), with the reference number ZMB 6387. Tovar-Hernández and Carrera-Parra (2011) refer this specimen as being a syntype. Although the designation of a lectotype for B. koellikeri is desirable, it is out of the scope of the present work.

Etymology.

The name of the new genus is composed by combining the Greek terms for acro, meaning "tip end" or "extremity of a body", mega, meaning “big” or “large”, and the suffix -omma, a noun meaning “eye”, and referring to the big compound eyes located on the radiolar subdistal region, typical of the genus.

Gender.

Neuter.

Remarks.

The publication date of the genus Megalomma Johansson should be considered as “1926”. It was generally accepted as being “1927” until Tovar-Hernández and Salazar-Vallejo (2008) pointed out that the name had been introduced in a previous publication by the same author, referring the date as “1925”. In fact, the last page of this publication states "Tryckt den 5 november 1925" ("Printed the 5 November 1925") and in the following line " Uppsala 1925. Almquist & Wiksells Boktryckeri-A.-B." This date is also present in existing reprints of the paper. However, the bounded volume comprising the article provides the publication date as “Häfte 2 inneh. A N:o 6-12, [...] utkom den 5 juni 1926" ("Booklet 2 cont. A No. 6-12, [...] published 5 June 1926"). This booklet includes article 7A by Johansson, where the name Megalomma is introduced for polychaetes. Hence, the work was printed in 5 November 1925, but published only in the following year, on 5 June 1926.

The genus Acromegalomma , nomen novum is represented by 36 valid species, all of them new combinations.