ABSTRACT Abstract: Rhithropanopeus harrisii (Brachyura, Panopeidae) is a small euryhaline and eurythermal omnivorous crab native to the Northwest Atlantic. However, it has become an invasive species in various estuaries and coastal areas far from its original habitat, most likely due to intercontinental shipping. Once it establishes itself in one location, it can spread to neighboring regions via maritime currents. In 1982, this species was found in South America, specifically in Lagoa dos Patos, Brazil. In this study, we present the first record of R. harrisii larvae in Uruguay, located in the coastal marine zone of Laguna de Rocha, approximately 300 km south of Lagoa dos Patos. It was discovered during a study that involved 15 plankton samplings, conducted from February 2016 to February 2017. Notably, the observation of R. harrisii larvae was limited to the coastal zone during the summer and autumn of 2016 (February to April). All observed larvae were in the zoeal stage, and their abundance ranged from three to 185 individuals per 100 m3. The temperature and salinity values recorded during sampling surveys with the presence of R. harrisii ranged from 19 to 22.4 °C and 11.8-32.5 ppt, respectively. The discovery of the larval stage suggests that adults of this species may be reproducing in the eastern coastal zone of Uruguay or nearby regions. The area in which they are currently found could potentially serve as a biological corridor, facilitating their spread to other estuaries of great economic and ecological importance, such as the Río de la Plata, as well as other coastal lagoons and subestuaries in Uruguay and Argentina. Further monitoring studies are necessary to determine whether this species became established in the area. Potential ecological consequences in our region derived from its presence are herein discussed. Abstract Brachyura, Brachyura (Brachyura Panopeidae Atlantic However habitat shipping location currents 1982 America Patos Brazil R Rocha 30 1 samplings 201 2017 Notably April. April . April) 18 10 m3 m 224 22 4 22. C 11.832.5 118325 11.8 32.5 11 8 32 5 11.8-32. ppt respectively corridor importance Plata Argentina discussed 198 3 20 2 832 11.832. 11832 118 11. 325 32. 11.8-32 83 11.832 1183 11.8-3 11.83 11.8-

Abstract The natural history and conservation status of the West Indian endemic freshwater crabs of the genus Epilobocera are poorly known. Several species have restricted distributions and apparently specific ecological requirements, which make them particularly vulnerable to anthropogenic threats. Epilobocera capolongoi is known to occur exclusively in mountain streams and rivers above 300 m elevation in the Guamuhaya Massif, central Cuba. In addition to the publication with the original description, there is only one paper exclusively on this species, which reported it as being preyed upon by a heron and recorded it from some additional localities in the vicinity of Topes de Collantes, provinces of Cienfuegos and Sancti Spíritus. Epilobocera capolongoi is herein reported from Pico San Juan Ecological Reserve and Lomas de Banao Ecological Reserve, which expands its geographic range to about 60 km and its elevation to 1,000 m. The species was found living sympatric with the congeneric Epilobocera cubensis poliorcetes in Lomas de Banao Ecological Reserve, but apparently there exists some habitat segregation between them. Some phenotypic characters important to distinguish both species are described, some basic data on their natural history are provided, and an assessment of the conservation status of E. capolongoi following current IUCN criteria is made. requirements threats 30 Massif Cuba description Collantes Spíritus 6 1000 1 000 1,00 described provided E made 3 100 00 1,0 10 0 1,

Abstract In describing Cyclocancer to accommodate his new species C. tuberculatus, Beurlen highlighted that his new genus was a cancroid intermediate in form between Atelecyclus and Cancer, but with enough characters to be placed in a new genus. Examination of C. tuberculatus type material revealed that Cyclocancer is a junior synonym of Hepatus. Therefore, C. tuberculatus is herein transferred into Hepatus as H. beurleni nomen novum because H. tuberculatus (Beurlen, 1958) is a junior homonym of H. tuberculatusSaussure (1858), a junior synonym of Hepatus pudibundus (Herbst, 1785). Miohepatus gen. nov., comb. nov. is proposed here to accommodate Hepatella amazonica Beurlen from the Pirabas Formation, Neogene, Pará, Brazil, based on new morphological evidence from the type material. C Cancer Therefore H Beurlen, (Beurlen 1958 1858, 1858 , (1858) Herbst, Herbst (Herbst 1785. 1785 . 1785) gen nov comb Formation Neogene Pará Brazil 195 185 (1858 178 19 18 (185 17 1 (18 (1 (

Abstract The poorly known pilumnid, Vellumnus penicillatus (Gordon, 1930), is redescribed by examining the Hong Kong types. A new species, Vellumnus tki n. sp., is described from Macclesfield Bank, South China Sea, and it is distinguished from its closest congener, Vellumnus minabensis (Sakai, 1969) from Japan, by the setal pattern on the carapace and pereiopods, carapace proportions, structure of the front and anterolateral teeth, armature on the chelipeds and relatively shorter ambulatory legs. pilumnid Gordon, Gordon (Gordon 1930, 1930 , 1930) types species n sp sp. Bank Sea congener Sakai, Sakai (Sakai 1969 Japan pereiopods proportions teeth legs 193 196 19 1

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). al 2022 (2022 crab Basin LSID, LSID , (LSID) electroniconly electronic publications availability accordingly 2022. . 202 (202 (LSID 20 (20 2 (2 (

Abstract Crabs of the Dissodactylus genus are commonly found in symbiosis with other marine invertebrate organisms. This study describes the structure of the population of the Pinnotheridae crab Dissodactylus crinitichelis living in symbiosis with the sand dollar Encope emarginata on a temporal scale and over the size class distribution, sex-ratio, recruitment defined as the specimens of the two first size classes, and breeding period. Specimens were collected in sand bottoms at the infralittoral zone at Flamengo Beach in Ubatuba, in the northeastern coast of São Paulo state, using free diving performed by one diver from August 2017 to July 2018, for 30 minutes per month. 337 juvenile, 51 adult females, and 38 adult males were analyzed, comprising 12 ovigerous females. There was registered recruitment, in almost all months. The sex ratio was 1:1.3, with more females than males in the population. In March, there was a significant recruitment period with 337 juveniles in one sample. The maximum carapace width was 6.6mm in males and 7.65mm in females. The representative number of specimens in the first size class may provide information that D. crinitichelis presents some levels of spatial segregation in the population in this area and should be monitored for preservation. organisms distribution sexratio, sexratio ratio, sex-ratio classes Ubatuba state 201 2018 3 month 33 juvenile 5 analyzed 1 months 11.3, 113 1.3, 1:1.3 March sample 66mm mm 6 6mm 765mm 7 65mm D preservation 20 11 11.3 13 1.3 1:1. 2 11. 1. 1:1 1:

Resumo Caranguejos do gênero Dissodactylus são frequentemente reconhecidos associados a alguma relação simbionte. O objetivo aqui é apresentar algumas características populacionais do caranguejo pinoterídeo Dissodactylus crinitichelis, em associação à bolacha-da-praia Encope emarginata, em escala temporal, destacando a distribuição em classes de tamanho, proporção sexual, recrutamento e período reprodutivo. Os caranguejos foram amostrados mensalmente, no infralitoral não consolidado, na Praia do Flamengo, Ubatuba, litoral norte paulista, junto às bolachas-da-praia, durante sessões de mergulho livre, mensalmente de agosto/2017 a julho/2018, com esforço amostral de aproximadamente 30 minutos/mês, por um coletor. Foram obtidos 426 caranguejos, dos quais 337 indivíduos jovens e 89 adultos sendo 51 fêmeas e 38 machos, incluindo 12 fêmeas ovígeras. O recrutamento foi registrado em praticamente todo o período amostrado, com pico de frequência em março, com 71 jovens. A proporção sexual verificada foi 1:1.3, desviada para as fêmeas. A maior da largura da carapaça para machos e fêmeas de D. crinitichelis foi de 6,6 e 7,65 mm, respectivamente. O principal caráter da população amostrada foi a presença dominante de jovens, o que sugere a existência de segregação espacial da população amostrada em simbiose à bolacha-da-praia, o que parece estabelecer regiões preferenciais de recrutamento nessa praia, o que torna a região de grande importância para a conservação dessa espécie de caranguejo. simbionte bolachadapraia bolacha praia emarginata temporal tamanho reprodutivo consolidado Flamengo Ubatuba paulista bolachasdapraia, bolachasdapraia bolachas bolachas-da-praia livre agosto2017 agosto 2017 agosto/201 julho2018 julho 2018 julho/2018 3 minutosmês minutos mês minutos/mês coletor 42 33 8 5 1 ovígeras amostrado março 7 11.3, 113 1.3, 1:1.3 D 66 6 6, 765 65 7,6 mm respectivamente bolachadapraia, agosto201 201 agosto/20 julho201 julho/201 4 11 11.3 13 1.3 1:1. 76 7, agosto20 20 agosto/2 julho20 julho/20 11. 1. 1:1 agosto2 2 agosto/ julho2 julho/2 1: julho/

Abstract Five anomuran and one brachyuran species collected from continental shelf and slope off southern Brazil have their geographic ranges considerably extended southward: Neolithodes agassizii (Smith), Paguristes spectabilis McLaughlin and Provenzano, Pagurus heblingi Nucci and Melo, Phimochirus occlusus (Henderson), Mixtopagurus paradoxus A. Milne-Edwards, and the brachyuran Euchirograpsus antillensis Türkay. Pagurus heblingi was previously known only from its type locality (off Cabo Frio, Rio de Janeiro) and from off Espírito Santo. Paguristes spectabilis was known only from the holotype (off Trinidad, Caribbean Sea) and two additional females from off Rio de Janeiro. One female was found of the brachyuran Robertsella meridionalis Tavares and Gouvêa, a species previously known only from two males. Additionally, the occurrence of the hermit crabs Dardanus venosus (H. Milne Edwards) and Oncopagurus gracilis (Henderson), and the brachyuran Hexapanopeus paulensis Rathbun are confirmed for Santa Catarina. The record of the brachyuran Neopilumnoplax americana (Rathbun) from Santa Catarina (27°S) probably actually refers to Neopilumnoplax lipkeholthuisi Tavares and Melo, a species described from Rio Grande do Sul (33°S) and Mar del Plata (37°S). southward Smith, Smith , (Smith) Provenzano Melo Henderson, Henderson (Henderson) A MilneEdwards, MilneEdwards Edwards, Edwards Milne-Edwards Türkay Frio Janeiro Santo Trinidad Sea Gouvêa males Additionally H. H (H (Rathbun 27°S 27S S 27 (27°S 33°S 33S 33 (33°S 37°S. 37S 37°S . 37 (37°S) (Smith (Henderson 2 3 (37°S

Abstract In order to know the morphological variations of Goyazana castelnaui, we conducted an ontogenetic study from the first crab stage to the adult stage using geometric morphometry. We studied 36 females, 43 males and 162 juveniles collected in the Pajeú River, Brazil. We photographed crabs’ carapace, pleon and right cheliped with they arranged parallel to the plane, afterwards landmarks and semi-landmarks were strategically distributed in the images. Through principal components analysis, we observed that the variation occurred mainly in the frontal and posterior region of the carapace. The pleon presented marked variations in the posterior and anterolateral region, while chelipeds presented greater variations at the base of the fixed finger. The canonical variation between sexes and between juveniles and adults (p<0.05) varied significantly. Correct allocations obtained by discriminant analysis (p<0.05) varied between 89.3% and 100.0%. The carapace shows a constant dimorphism along the ontogenetic trajectory, and both sexes reach similar centroid sizes (p>0.05). While the pleon and the cheliped, both sexes are similar when juvenile, diverging along the trajectory and reaching different centroid sizes (p<0.05). Females have a larger pleon and males a larger cheliped, corroborating the monophyletic theory of Brachyura. castelnaui morphometry 3 females 4 16 River Brazil crabs plane semilandmarks semi images finger p<0.05 p005 p 0 05 (p<0.05 significantly 893 89 89.3 1000 100 100.0% p>0.05. p>0.05 . (p>0.05) juvenile p<0.05. Brachyura 1 p<0.0 p00 (p<0.0 8 89. 10 100.0 p>0.0 (p>0.05 p<0. p0 (p<0. 100. p>0. (p>0.0 p<0 (p<0 p>0 (p>0. p< (p< p> (p>0 (p (p>

Abstract Freshwater crabs of the family Potamidae Ortmann, 1896, have so far not been recorded in the state of Odisha in India. We report for the first time a potamid crab, Acanthopotamon martensi (Wood-Mason, 1875), from Odisha. With this record, in addition to the ‘Ganges Delta and Plain’ and the ‘Lower and Middle Indus’ freshwater ecoregions, A. martensi is now known to occur also in the ‘Northern Deccan Plateau’ ecoregion. The present record of A. martensi from Odisha represents the southernmost record of the family Potamidae in the Indian subcontinent. In fact, A. martensi is one of two potamid species that is known from south of the Ganges. Five species of freshwater crabs, including A. martensi, are now known from Odisha. Ortmann 1896 India crab WoodMason, WoodMason Wood Mason, Mason (Wood-Mason 1875, 1875 , 1875) Ganges Plain Lower Indus ecoregions A Northern Plateau ecoregion subcontinent fact 189 187 18 1

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.