Catalogue of type specimens deposited in the Polychaeta Collection of the Universidad Autónoma de Nuevo Léon (Mexico)

Abstract Background In Mexico, there are six scientific collections of polychaetous annelids. The "Colección Poliquetológica" from the Universidad Autónoma de Nuevo León houses one of the three most important collections of annelids in the country, based on a number of lots and number of type materials deposited, as well as geographical coverage. New information A catalogue of type materials of polychaete annelids housed at the “Colección Poliquetológica” from the Universidad Autónoma de Nuevo León (México) is presented for the first time. The Collection contains 37 holotypes, 174 paratypes and one syntype. These type materials are grouped in 15 families, 35 genera and 54 species of marine worms. Types were described mostly from the Mexican waters, with a low number of types from Ecuador, El Salvador, Argentina, USA, Philippines, New Caledonia and Japan.

The "Colección Poliquetológica de la Universidad Autónoma de Nuevo León" originated in 1964, when students and career professors started to collect samples along Mexican littorals during fieldwork and teaching lessons.These samples were identified and then deposited at the Laboratory of Arthropods.Unfortunately, the laboratory and part of the incipient collection was destroyed by fire in 1975.
From 1979 to 1981, Sergio Salazar-Vallejo, being a bachelor student on that time, recovered some specimens and transferred them to the Non-Arthropod Invertebrate Zoology Laboratory.He organised the collection and also provided the first catalogue being composed of 26 families, 59 genera and 74 species (Salazar-Vallejo 1981, Salazar-Vallejo 2023).
Then, from 1982 to 1985, the collection was in the charge of Jesús Angel de León González, who moved to La Paz (Baja California Sur, Mexico) for his postgraduate studies.He returned to the Autonomous University of Nuevo León in 1991 as curator, bringing with him numerous lots of polychaete worms captured by himself during oceanographic cruises, as well as sporadical samplings along the coast of the Gulf of California and the Baja California Peninsula.
Finally, the collection obtained formal recognition and their record in the census of Public and Private Scientific and Museographic collections for wildlife of the Secretaría del Medio Ambiente y Recursos Naturales (SEMARNAT) in May 2009.The collection officially adopted the acronym UANL (Universidad Autónoma de Nuevo León) with key number NL-INV-0002-05-09 (Fig. 1).
Currently, the collection houses 8,159 lots belonging to 51 families, 285 genera and 699 species of polychaetes.In addition, it houses type materials of annelids mostly from

Materials and methods
The catalogue of type materials is presented in alphabetical order to families, genera and species level, including accession numbers, locality, geolocation, depth, collection date and names for collectors when available in protologues.Specimens were typically fixed with formalin and stored in 70% ethanol at ambient temperature, except for Pectinaria santii Tovar-Hernández & de León-González, 2022 (Tovar-Hernández and de León-González 2022) that was fixed in 96% ethanol.
Geolocations of type localities are derived from the original descriptions, being considered an "original geolocation" when the authors provided the coordinates or "estimated Formal record of the "Colección Poliquetológica de la Universidad Autónoma de Nuevo León".
Catalogue of type specimens deposited in the Polychaeta Collection of the ... geolocation", where estimated using Google Earth (Google Earth 2023) from the general geographic limits described by the authors.All geolocations were converted to decimal degrees throughout PGC Coordinate Converter (The Polar Geospatial Center 2023).
References for taxonomic authorities in phylum, class, family and genera are not included; these can be consulted in WoRMS (2023).Corresponding protologues to species are provided in Suppl.material 1.
General data of type materials deposited at the "Colección Poliquetológica de la Universidad Autónoma de Nuevo León (México)".

Platynereis hutchingsae de León-González, Solís-Weiss & Valdez-Rocha, 2001
Catalogue of type specimens deposited in the Polychaeta Collection of the ... Catalogue of type specimens deposited in the Polychaeta Collection of the ...