Giovanna Monticelli Cardoso

Two new subterranean species of Hyalella Smith, 1874 (Crustacea: Amphipoda: Hyalellidae) from Brazil

Two new species of Hyalella from Brazil are described. Hyalella veredae sp. n. shows the following characters: eyes reduced or absent in some specimens; antenna 1 and antenna 2 of similar size, and a curved seta on the inner ramus of male uropod 1. Hyalella formosa sp. n. is characterized by the absence of eyes, antenna 1 longer than antenna 2 and a curved seta on the inner ramus of male uropod 1. The species were found on caves located in two private properties, both under the impact of agricultural activities, which demonstrates a potential threat to these subterranean environments.

A new troglobiotic species of Hyalella (Crustacea, Amphipoda, Dogielinotidae) from Southeastern Brazil

The genus Hyalella Smith, 1874 is typical from the continental American waters and show high levels of endemicity. In Brazil, the occurrence of 12 species was reported, of which only Hyalella caeca Pereira 1989 is troglobiotic. A new species was found in a cave, Gruta da Toca, located near Itirapina city, state of Sao Paulo, Brazil. This species represents the second troglobiotic for the genus in Brazil.

TWO NEW SPECIES OF HYALELLA (AMPHIPODA, DOGIELINOTIDAE) FROM BRAZIL

Two new freshwater species of amphipods from Brazil are described here. Hyalella xakriaba n. sp. occurs in the hydrographic basin of the Sao Francisco River, in a biome characterized by a semiarid climate, in the state of Minas Gerais. This new species constitutes the northernmost record of the genus in Brazil. Hyalella kaingang n. sp. occurs in the hydrographic basin of the Mampituba River, located in Rio Grande do Sul, the southernmost state in Brazil. Currently 14 species of Hyalella are known in Brazil, cave species among them. Some morphological characters and their respective states are analyzed, and constitute an important new tool for species identifications. In particular, we describe the cuticular structures, defined as denticles, on the distal inner margin of the carpus of gnathopods 1 and 2. These structures may have a polygonal pattern or appear as comb scales, and may be arranged in one or more rows.

The genus Dubioniscus Vandel, 1963 (Oniscidea, Dubioniscidae) with descriptions of two new species from Brazil

Before the present study, the genus Dubioniscus included four species occurring in Central and South Americas. The examination of Dubioniscus delamarei, D. marmoratus and D. negreae allowed us to revise the genus and to move D. goeldii to Calycuoniscus. Moreover, two new species are described, D. depressus n. sp. from the state of São Paulo, and D. elongatus n. sp. from the state of Rio de Janeiro, Brazil. http://zoobank.org/urn:lsid:zoobank.org:pub:1D2B9F44-96EE-48A6-A8DE-D24F190F9AF3.

Two new species of Neotroponiscus Arcangeli, 1936 (Crustacea, Isopoda, Oniscidea) from Brazilian caves

ABSTRACT Currently Neotroponiscus comprises eight species. In this study, two new species of this genus of terrestrial isopods are described. Neotroponiscus iporangaensis sp. nov. was collected in limestone caves located in Parque Estadual Turístico do Alto Ribeira (PETAR). Neotroponiscus tuberculatus sp. nov. occurs in iron ore caves of the Iron Quadrangle (local name Quadrilátero Ferrífero) and represents the first species of the genus recorded in iron caves. As tourism and mining are common activities in PETAR and in the caves of the Iron Quadrangle, respectively, both species’ occurrence is threatened. http://zoobank.org:pub:45DFEEEC-0590-49E2-8A53-E48F081FB497

Two new species of Atlantoscia Ferrara & Taiti, 1981 (Isopoda: Oniscidea: Philosciidae) from southern Brazil described in the light of integrative taxonomy

The use of molecular data in association with classical taxonomy has helped to alleviate the taxonomic impediment through the discovery, delimitation and description of new species. Terrestrial isopods are the largest suborder of Isopoda; however, there are very few active taxonomists in this group and a representative part of the terrestrial isopods world diversity remains unexplored. The genus Atlantoscia comprises five species in which diagnostic characters are few and show subtle differences among the species. The objective of this study was to delimit and describe two new species of the genus Atlantoscia from southern Brazil by using traditional taxonomy coupled with genetic information. Specimens were analyzed morphologically and by the aid of two molecular markers, mitochondrial COI and nuclear 18S rRNA. The validity of the new species Atlantoscia antennamaculata sp. nov. and Atlantoscia australis sp. nov. was corroborated, unambiguously, by morphological approach, phylogenetic analysis and species delimitation methods. Our study reinforces the fact that, despite the undeniable importance of comparative morphology in species discovery, new methods and data, particularly molecular ones, are becoming prominent and an integrative part of the taxonomy practice.

A new genus and two new species of Pudeoniscidae Lemos de Castro 1973 (Crustacea: Isopoda: Oniscidea) from Brazil

ABSTRACT To date, the family Pudeoniscidae includes six species and three genera, Pudeoniscus, Brasiloniscus and Iansaoniscus, with distributions restricted to Brazil. Here, we redefine the family Pudeoniscidae based on the discovery of a new genus and two new species, Oxossioniscus pataxo sp. nov. and Oxossioniscus akoko sp. nov., from the Brazilian Atlantic forest in the state of Bahia, and on the examination of Pudeoniscus birabeni and Pudeoniscus obscurus. Moreover, P. obscurus is re-described and new records are provided for P. birabeni. http://www.zoobank.org/urn:lsid:zoobank.org:pub:A0123730-C623-49CE-8665-AE17FDDF994A.

Two new species of Hyalella (Crustacea, Amphipoda, Hyalellidae) from state of Rio Grande do Sul, Southern Brazil

There are 68 known species of Hyalella worldwide, with 23 occurring in Brazil. The state of Rio Grande do Sul, Southern Brazil, has the largest diversity of the genus in the country, with nine species recorded. The current study aimed to describe two new species of Hyalella from state of Rio Grande do Sul, both of them in the Northwest region of the state, one found in a small spring and another in an artificial pond. Hyalella georginae n. sp. presents several clusters of simple setae on antenna 2, maxilliped very slender, gnathopod 2 dactylus not reaching the lobe of propodus, pleopods rami with short plumose setae and a peculiar pattern of setae on uropods and telson. Hyalella gauchensis n. sp. presents antenna 2 with few setae, maxilliped very slender, gnathopod 2 dactylus reaching the lobe of propodus and pleopods rami with long plumose setae. From this work, the number of Hyalella species found in Brazil increases to 25 and 70 for the genus.

A new genus of Trachelipodidae Strouhal, 1953 (Crustacea, Isopoda, Oniscidea) from the eastern Mediterranean

Levantoniscus n. gen. is erected for two new species from Cyprus: Levantoniscus bicostulatus n. sp. and Levantoniscus makrisi n. sp. Levantoniscus wahrmani (Strouhal, 1968) n. comb. from Israel and southern Turkey is transferred from the genus Bathytropa Budde-Lund, 1885 and family Bathytropidae. The new genus is included in the family Trachelipodidae and is characterized by distinct dorsal ornamentation, interlocking pleopods and uncovered pleopodal lungs which are located in invaginations on pleopod 3-5 exopodites.