Abstract Santana et al. (2022) described a new genus and species of fossil crab, Chronocancer camilosantanai, from carbonate concretions of the Romualdo Formation of the Araripe Sedimentary Basin. The journal in which the description appeared was published online only and the new name did not include a ZooBank registration number (LSID), as required for validation of new names in electronic-only publications. The present note serves to validate the name Chronocancer camilosantanai by fulfilling the ICZN conditions for nomenclatural availability. The date and authorship of the specific name, accordingly, are those of this note, not Santana et al. (2022).

ABSTRACT The objective of this work was to evaluate the acute toxicity of the commercial herbicides Karmex® (diuron: DCMU 3-(3,4-dichlorophenyl)-1,1-dimethylurea) and Herbipol® (glyphosate: N-(phosphonomethyl) glycine) on the megalopae of Callinectes sapidus and measure their relative abundance in the association of larval and postlarval species of crustaceans from the estuary of the Jamapa River, Veracruz. Collections were made overnight using white light traps. Likewise, dissolved oxygen, pH, temperature, total dissolved solids, and salinity were measured in situ. It was found that the association of larvae and postlarvae consisted of Macrobrachium acanthurus, M. olfersii, Potimirim mexicana, megalopae of C. sapidus and Armases ricordi, and zoeas of Brachyura. In total, 559 and 1057 C. sapidus megalopae were collected in November and March 2019, respectively. Dissolved oxygen was 6 and 7 mg L−1, pH was 7 and 8, the temperature was 26 and 27°C, total dissolved solids were 700 and 1500 ppm, and salinity was 0.70 and 16 in November and March, respectively. Using Probit analysis, a 96 h LC50 of diuron (Karmex®) was 7.69 ± 1.07 mg L−1 in March and 6.64 ± 0.93 mg L−1 in November. The LC50 for glyphosate (Herbipol®) was 247.83 ± 34.54 mg L−1 in March and 288.18 ± 38.66 3 mg L−1 in November. The blue crab C. sapidus is tolerant to a wide range of physicochemical factors; however, it is sensitive in the postlarval stages, like other species of crustaceans, to the herbicides diuron and glyphosate, for which the megalopae can be used in ecotoxicological studies.

Abstract Four species of sesarmid crabs of the genus Nanosesarma Tweedie, 1950, have been reported from India: Nanosesarma andersoni (De Man, 1888), Nanosesarma batavicum (Moreira, 1903), Nanosesarma jousseaumei (Nobili, 1906), and Nanosesarma minutum (De Man, 1887). In the present study, one more species, Nanosesarma sarii Naderloo and Türkay, 2009 is reported for the first time from India along with the diagnosis and illustrations of the five Indian Nanosesarma species.

Abstract The morphology of the first zoeal stage of Pilumnus vinaceus is described and compared with the zoea I of Pilumnus all species in the literature. Two ovigerous females of P. vinaceus were maintained in the aquarium facilities until the larvae hatch. The larvae of each ovigerous female were dissected using a stereoscopic microscope. The zoea I of P. vinaceus has common characteristics among the Pilumnidae as: [1] antenna of type 2; [2] maxilliped 1 with 2+2+3+3 setae on the basis and with 3,2,1,2,5 setae in the endopod; [3] maxilliped 2 with 1+1+1+1 setae on the basis and 1,1,6 setae on the endopod; [4] telson with furcal rami armed with dorsal and lateral spines. Considering the species of Pilumnus that occur in the western Atlantic, it becomes possible to identify P. vinaceus zoea I by means of the verification of the following characteristics: [1] pleonites with mediolateral processes; [2] number of setae on the antennule. It is however, important to consider that there is still a great deficit in the knowledge about the morphology of the larval forms of the species assigned to Pilumnus and we argue in favor of new descriptions to build a more robust dataset on zoeal morphology characters and use it in a phylogenetic context on the genus.

Resumen Este estudio representa un esfuerzo sin precedentes para evaluar la diversidad de los decápodos Brachyura y Anomura del infralitoral rocoso del Parque Estatal Marino Laje de Santos, un área preservada y protegida localizada en la costa sureste de Brasil. Las muestras se tomaron trimestralmente durante 1 año con la combinación de sustrato de refugio artificial para captura pasiva y buceo autónomo para captura activa. Se determinaron un total de 987 individuos distribuidos en 32 especies, 22 géneros y 11 familias. Presentamos un reporte taxonómico de las especies y se discuten sus registros de distribución. El ermitaño Pagurus brevidactylus y el cangrejo Mithraculus forceps fueron las especies más abundantes de Anomura y Brachyura, respectivamente. Como se esperaba, la combinación de los métodos de muestreo mostró un valor más alto del índice de diversidad de Shannon (H = 5.7) que los métodos individuales de captura pasiva (H = 5.6) y captura activa (H = 4.4). Este estudio provee el primer reporte de crustáceos decápodos para el parque, por lo tanto, puede ser usado como línea base para programas de monitoreo de fauna local y en los planes de conservación.

Abstract This study represents an unprecedented effort to assess the diversity of rocky infralittoral decapods Brachyura and Anomura from the Marine State Park of Laje de Santos, a preserved and protected area located in the southeastern Brazilian coast. Sampling was carried out quarterly for 1 year, using the combination of artificial refuge substrate (ARS) for the passive capture of specimens, and SCUBA diving for active capture. A total of 987 individuals distributed into 32 species, 22 genera, and 11 families were determined. We present a taxonomic account of the species and their distribution records are discussed. The hermit crab Pagurus brevidactylus and the crab Mithraculus forceps were the most common species of Anomura and Brachyura, respectively. As expected, the combination of the sampling methodologies showed a higher Shannon diversity index value (H = 5.7), than the individual methods of ARS (H = 5.6) and active capture (H = 4.4). This study provides the first record of decapod crustaceans for the park, therefore it can be used as a baseline for local fauna monitoring programs and conservation planning.

Resumen Las colecciones biológicas constituyen un registro de la historia natural de las diferentes regiones y brindan información relevante para diversas investigaciones científicas concernientes con sistemática, biogeografía, y biología de la conservación, entre otras. En las colecciones relacionadas con artrópodos de Colombia, los cangrejos (Decapoda: Anomura y Brachyura) están poco representados, a pesar de ser el segundo país con la mayor diversidad de cangrejos de agua dulce a nivel mundial y poseer numerosos representantes de especies marinas y semiterrestres, tanto del Atlántico como del Pacífico. La pequeña representatividad del grupo en colecciones biológicas puede deberse al número reducido de especialistas en el grupo y al número limitado de muestreos. El objetivo de este trabajo fue ampliar el conocimiento de los decápodos de Colombia mediante la revisión de los especímenes depositados en la colección CEBUC. Se encontraron 98 individuos distribuidos en 15 familias, 23 géneros y 22 especies. Los ejemplares revisados corresponden a la región Centro Occidental y costa atlántica de Colombia, en donde Caldas es el departamento mejor representado, con el 50 % de los registros. En este trabajo se registran ampliaciones altitudinales para la distribución de Hypolobocera bouvieri y Strengeriana fuhrmanni (Pseudothelphusidae). Además, se documentan ampliaciones en el rango de distribución para otras especies. Este trabajo constituye una fuente preliminar de información sobre la di‐ versidad de los cangrejos a nivel regional y enfatiza que la diversidad puede incrementarse substancialmente con la ampliación del número de investigaciones y la revisión de colecciones biológicas.

Abstract Biological collections constitute a record of the natural history of different regions and provide relevant information for various scientific investigations related to systematics, biogeography, conservation biology, among others. In collections associated to arthropods in Colombia, crabs (Meiura) formed by the infraorders Anomura and Brachyura (Decapoda) are poorly represented, despite being the second country with the most diversity of freshwater crabs worldwide and having many representatives of marine and semi‐terrestrial species from the Atlantic and Pacific. The small representativeness of the group in the collections could be due to the small number of specialist researchers in the group and the small amount of samplings. The objective of this work was to expand the knowledge on decapods from Colombia through the review of the specimens deposited in the CEBUC collection. We found 98 individuals distributed in 15 families, 23 genera and 22 species. The material reviewed comes from the Central Western and Atlantic coastal region of Colombia, where Caldas is the best represented department, with 50% of the records. In this work altitudinal enlargements are registered for the distribution of Hypolobocera bouvieri and Strengeriana fuhrmanni (Pseu‐ dothelphusidae). In addition, expansions in the range of distribution are documented for other species. This work constitutes a preliminary source of information on the diversity of crabs (Meiura) at the regional level and reflects that diversity can increase substantially with the expansion of the number of investigations and the review of biological collections.

Resumo O “blenny da patagônia” (Eleginops maclovinus) é uma espécie endêmica da América do Sul, com características fisiológicas que facilitariam sua incorporação na aquicultura chilena. No entanto, atualmente não há alimento artificial específico que possa ser usado para criar E. maclovinus. Diante desse problema, este estudo descreve a composição proximal e o perfil de ácidos graxos do caranguejo Hemigrapsus crenulatus, um dos principais alimentos de E. maclovinus. O objetivo do estudo é servir como informação básica para o desenvolvimento de uma dieta artificial específica para espécies juvenis desse peixe. A análise proximal do corpo completo de H. crenulatus indica que ele é composto, principalmente, de cinzas (35,9%), proteínas (32,2%), glicídios (19,8%) e lipídios menores (3,6%). O perfil de ácidos graxos é 40,7% PUFA, 29,7% MUFA e 29,5% SAFA, e os ácidos mais abundantes são eicosapentaenoico (18,8%), oleico (6,8%) e palmítico (16,6%), respectivamente. H. crenulatus possui o mais alto nível de proteínas, lipídios e PUFAs entre as espécies da infraordem de Brachyura.

Abstract The Patagonian blenny (Eleginops maclovinus) is species endemic to South America with physiological characteristics that would facilitate its incorporation into Chilean aquaculture. However, there is currently no specific artificial food that can be used to raise E. maclovinus. In light of this problem, this study describes the proximal composition and fatty acid profile of the crab Hemigrapsus crenulatus, one of the main foods of E. maclovinus. The purpose of the study is to serve as basic information for the development of a specific artificial diet for juveniles of this fish species. The proximal analysis of the complete body of H. crenulatus indicates that it is mainly composed of ash (35.9%), proteins (32.2%), glucides (19.8%) and minor lipids (3.6%). The fatty acid profile is 40.7% PUFAs, 29.7% MUFAs and 29.5% SAFAs, and the most abundant acids are Eicosapentaenoic (18.8%), Oleic (6.8%) and Palmitic (16.6%), respectively. H. crenulatus has highest level of proteins, lipids and PUFAs among the species of the Brachyura infraorder.

Abstract Goniodromites sp. (Brachyura: Dromiacea: Goniodromitidae) is described from the Cenomanian (Upper Cretaceous) cold seep sediment in the Middle Yezo Group of Hokkaido, Japan. This species is the first recognition of the genus and family from the Cretaceous chemosynthetic communities, and represents the second record of a decapod from the fossil chemosynthetic communities in Japan. In addition, Sabellidromites inflata (Collins and Karasawa, 1993), a poorly known goniodromitid crab is redescribed.

Resumen Se describe al Goniodromites sp. (Brachyura: Dromiacea: Goniodromitidae) del Cenomaniano (Cretácico Superior) con sedimentos de los sumideros fríos del Grupo Yezo Medio en Hokkaido, Japón. Esta especie es el primer reconocimiento del género y familia para las comunidades quimiosintéticas del Cretácico, y representa el segundo registro de un decápodo de las comunidades quimiosintéticas fósiles en Japón. Además, se redescribe el Sabellidromites inflata (Collins y Karasawa, 1993), un cangrejo goniodromítido poco conocido.

Abstract The rich decapod assemblage from the late Eocene of San Feliciano hill (Orgiano, Monti Berici, Vicenza, NE Italy) was partially recorded by De Angeli and Garassino (2002, 2014). Herein, two new crabs, Bericirinia bretoni n. gen., n. sp. (Epialtidae MacLeay, 1838) and Orgianocarcinus bericus n. gen., n. sp. (Dairidae Ng and Rodriguez, 1986) are reported from San Feliciano Hill, located in Monti Berici, Orgiano. Moreover, two well-preserved specimens assigned to Actaeites lobatus Müller and Collins, 1991 (Xanthoidea MacLeay, 1838, incertae sedis) allowed to add some morphological characters to the original description of the holotype, lacking the fronto-orbital margin.

Resumen El rico conjunto de decápodos del Eoceno tardío del cerro San Feliciano (Orgiano, Monte Bérico, Vicenza, NE Italia) fue registrado parcialmente por De Angeli y Garassino (2002, 2014). En esta zona hay dos nuevos cangrejos, Bericirinia bretoni n. gen., n. sp. (Epialtidae MacLeay, 1838) y Orgianocarcinus bericus n. gen., n. sp. (Dairidae Ng y Rodríguez, 1986) encontrados en el cerro San Feliciano, localizado en Orgiano del Monte Bérico. Además estos dos ejemplares estan bien conservados y asignados para Actaeites lobatus Müller y Collins, 1991 (Xanthoidea MacLeay, 1838, incertae sedis) lo que permitió añadir algunos caracteres morfológicos a la descripción original del holotipo donde se carece del margen frontoorbitario.

Abstract From the lower Miocene (Burdigalian) of the Qom Formation, exposed in three sections (Kuh-e-Donbeh, Bagher-Abad, and Vartun) in Central Iran, a decapod crustacean assemblage is described. The specimens exhibit two modes of pres-ervation: carapaces (either isolated or with attached appendages) and isolated cheliped elements. All studied specimens are fractured and/or eroded. Based on this moderately preserved material, three brachyuran crab taxa are identified, including Mursia cf. lienharti (Bachmayer, 1962), Palaeocarpilius rugifer Stoliczka, 1871, and Necronectes sp. The occurrence of P. rugifer represents the youngest confirmed occurrence of the species, whereas other two taxa represent the first confirmed Iranian occurrences of respective genera. This report enriches our knowledge on Miocene decapod assemblages of Iran, and thus helping to better understand the decapod migratory patterns along the Tethyan Seaway.

Resumen Se describe un conjunto de crustáceos decápodos correspondientes a la Formación Quom del Mioceno inferior (Burdigaliano) en tres regiones de Irán central (Kuh-e-Donbeh, Bagher-Abad y Vartun). Los especímenes exponen dos modos de preservación: caparazones (ya sea aislados o con apéndices adheridos) y elementos aislados quelípedos. Todos los ejemplares aquí estudiados están fracturados o erosionados. Con base en este material moderadamente conservado, se identificaron tres taxones de cangrejos braquiuros incluyendo Mursia cf. lienharti (Bachmayer, 1962), Palaeocarpilius rugifer Stoliczka, 1871 y Necronectes sp. Además, P. rugifer es el indicio confirmado más reciente de esta especie, mien-tras que los otros dos taxones son las primeras muestras iraníes en estos respectivos géneros. Este informe enriquece nuestro conocimiento sobre los conjuntos de decápodos del Mioceno en Irán, lo que contribuye a una mejor comprensión sobre los patrones migratorios de decápodos a lo largo de la vía marítima de Tetis.

Abstract We describe a new species of homolid crab from the Ypresian (early Eocene) Roda Formation of Huesca province (Aragon, Spain). In spite of the fragmentary condition of the sole specimen, some preserved frontal elements, and in particular the complete left cheliped, allow inclusion it within the genus Paromola Wood-Mason in Wood-Mason and Alcock, 1891, based on morphological similarities with the extant species of this genus. Direct comparison with specimens of the extant Paromola cuvieri (Risso, 1815) confirms this systematic assignment. Paromola bretoni n. sp. is the first homolid reported in the Cenozoic of the Iberian Peninsula, and expands the rich decapod fossil record of the Eocene basins of southern Pyrenees.

Resumen Se describe una nueva especie de cangrejo homólido, de la Formación Roda, Ypresiano (Eoceno temprano) de la provincia de Huesca (Aragón, España). A pesar de que el único ejemplar se halla parcialmente fragmentado, la similitud morfológica con especies actuales de los elementos conservados de la región frontal y en especial el completo quelípedo izquierdo, permite ubicarlo en el género Paromola Wood-Mason Wood-Mason and Alcock, 1891. Comparaciones con ejemplares actuales de Paromola cuvieri (Risso, 1815) confirmarían la validez de esta ubicación sistemática. Paromola bretoni n. sp. es el primer homólido reportado en el Cenozoico de la Península Ibérica y amplia la riqueza de registros sobre decápodos fósiles del Eoceno en las cuencas Surpirenaicas.

Abstract A new species of the pinnotherid crab genus Austinixa from La Cruz de Huanacaxtle, Nayarit, Mexico is described. The new species is closely related to Austinixa roblesi Palacios Theil and Felder, 2020, however these can be distinguished mainly by the shape of the male pleon and telson, gonopod and chelae. In addition, four new records of distribution of Austinixa felipensis Glassell, 1935 are added. The species is known previously from the type locality to the north of the Gulf of California and the Pacific coast of El Salvador and Nicaragua. The new collection sites are located on the eastern coast of the Gulf of California and the states of Nayarit and Jalisco, Mexico.

Abstract The family Pseudorhombilidae Alcock, 1900 is widely distributed in the tropical western Atlantic, occurring from shallow waters to the continental slope, inhabiting sandy, gravelly, or muddy substrates. Despite the broad distribution of this family in the Americas, the species Pseudorhombila octodentata Rathbun, 1906 and Pseudorhombila quadridentata (Latreille, 1828) have been observed only in a few localities, with disjunct records, and Robertsella meridionalis Tavares and Gouvêa, 2013 has been recorded only in one type locality (Santa Catarina, Brazil). The present work reports new occurrences of P. octodentata from the state of Sergipe and P. quadridentata from the state of Amapá, and the second occurrence of R. meridionalis from the state of Rio Grande do Norte, Brazil. These new records are an important contribution to the understanding of distributional patterns of pseudorhombilid crab species in Brazil and to the increase in biodiversity data of crustaceans from the North and Northeast regions of Brazil.

RESUMO Maturidade sexual morfológica do caranguejo marinho Xanthodius parvulus no Parque Estadual Marinho Laje de Santos, São Paulo, Brasil. O caranguejo marinho Xanthodius parvulus (Fabricius, 1793) tem distribuição natural ao longo do Atlântico Ocidental, comumente encontrado no litoral nordeste brasileiro. Contudo, essa espécie vem sendo amplamente registrada ao longo do litoral sudeste, especialmente na costa do estado de São Paulo, em ilhas próximas a regiões portuárias, (que são regiões recorrentes para introdução de espécies exóticas). O presente estudo tem como objetivo estimar a maturidade sexual morfológica (utilizando crescimento relativo) de X. parvulus para que seja possível compreender o funcionamento de padrões biológicos da mesma em uma área de preservação ambiental, subsidiando assim, possíveis intepretações para futuros estudos de conservação e manejo da espécie. Os caranguejos foram amostrados no Parque Estadual Marinho Laje de Santos, uma importante área de preservação do estado de São Paulo, utilizando substrato artificial de refúgio e captura ativa com mergulho autônomo como metodologia. A maturidade sexual morfológica das fêmeas foi estimada em 7,28 mm, considerando a relação da Largura do Abdome vs. Largura da Carapaça, enquanto para os machos, este valor foi de 8,83 mm baseando na relação Comprimento do Gonopódio vs. Largura da Carapaça, as fêmeas apresentaram um incremento no crescimento abdominal, mesmo durante os estágios mais maduros para alcançar um maior sucesso reprodutivo, uma vez que as estruturas abdominais são usadas na proteção dos embriões. A relação Comprimento do Gonopódio vs. Largura da Carapaça indicou que os machos, por sua vez, podem copular com fêmeas em diferentes tamanhos, uma vez que um crescimento não exagerado da estrutura mantém o gonopódio em tamanho adequado a todos os tamanhos de poros genitais das fêmeas, corroborado pelo crescimento alométrico negativo em juvenis e crescimento isométrico nos adultos. Sendo assim, estimando o tamanho da maturidade sexual das espécies, torna-se possível o desenvolvimento de um modelo para reconhecimento da biologia e padrões reprodutivos dos animais, sendo uma importante ferramenta no conhecimento comportamental e para registro de um dos parâmetros para se avaliar o status de conservação da espécie na área.

ABSTRACT The marine crab Xanthodius parvulus (Fabricius, 1793) is naturally distributed in the Western Atlantic, being commonly found in the northeastern Brazilian coast. However, this species has been also recorded in the southeastern coast, especially in São Paulo State, on islands located close to harbors, which are becoming a place of occurrence for exotic species. This study aimed to estimate the morphological sexual maturity (relative growth) of X. parvulus the functional biological patterns of the species in a No-take marine reserve. The crabs were sampled at the Marine State Park of Laje de Santos, an important protected area from São Paulo that is located close to the largest Brazilian harbor, Santos, using an artificial substrate and active search methods (scuba diving). The morphological sexual maturity of females was estimated in 7.28 mm, according to the Abdomen Width vs. Carapace Width relationship, while for males this value was 8.83 mm based on the Gonopod Length vs. Carapace Width relationship, the females presented an increase in abdominal growth, even during the mature stage in order to achieve higher reproductive success, since the abdominal structure is used to protect the embryos. The Gonopod Length vs. Carapace Width relationship showed that males copulate with different sized females, since a non-exaggerated growth of the gonopods keeps them adequate to the size of the female genital pore, i.e., juveniles exhibited negative allometry and adults presented isometry. Thus, estimating the size of the sexual maturity of a species requires the development of a model to acknowledge its biological and reproductive pattern, being an important tool to increase the knowledge about the behavior of this species and one of the parameters to evaluate its conservation status.

Abstract The present paper confirms the occurrence of the sesarmid crab Sarmatium crassum Dana, 1851 in India. The species has so far been recorded from Samoa, Tahiti, New Caledonia, eastern Australia, Philippines, Madagascar, South Africa, Tanzania, and Eritrea (Red Sea). This is the first record of the species from India.