A revision of Parhyalella Kunkel (Crustacea: Amphipoda: Gammaridea)

The genus Parhyalella Kunkel, sensu lato, is revised, based on a review of type material for all previously described species, and on new material….https://elischolar.library.yale.edu/peabody_museum_natural_history_bulletin/1045/thumbnail.jp

First report of a freshwater amphipod (Gammaridea: Hyalellidae), Hyalella azteca (Saussure), from nonanchihaline waters of Bermuda

The discovery of the freshwater amphipod H. azteca in Bermuda is reported. No freshwater amphipods have previously been recorded from open water pond habitats on this western Atlantic island. H. azteca in Bermuda presumably dispersed from nearby North American populations; several possible methods for dispersal are discussed. Distinctive morphological features of Bermuda H. azteca are compared with similar characters reported for other New World populations

Pariphinotus Kunkel, 1910, the senior synonym of Heterophlias Shoemaker, 1933 (Crustacea: Amphipoda: Phliantidae)

The synonymy of the genera Pariphinotus and Heterophlias has been debated many times in the literature. Historically a distinction has been maintained between these two phliantid genera because of morphological differences reported in the literature by the original descriptors and subsequent workers. Our examination of specimens of both genera demonstrates Pariphinotus and Heterophlias to be synonymous. Heterophlias has been regarded as the valid genus by most authors; Pariphinotus, however, is shown to be the senior synonym of Heterophlias

New records of Hyachelia tortugae and H. lowryi.

12 pages : illustrations (some color), map ; 26 cm. Specimens collected by the American Museum of Natural History's Center for Biodiversity and Conservation as part of its ongoing program of Pacific sea turtle research and conservation. (Page 3)Amphipods of the genus Hyachelia collected during an epibiont survey conducted over three years (2009, 2010, and 2011) at Palmyra Atoll are reported. Both known species, i.e., Hyachelia tortugae Barnard, 1967, and Hyachelia lowryi Serejo and Sittrop, 2009, were collected from Pacific green turtles, Chelonia mydas (Linnaeus). Given the increased awareness of epibionts and the desire of researchers to make positive identifications, figures of the diagnostic features of both amphipod species are presented. The significance of the cooccurrence of these two species on Pacific green turtles (Chelonia mydas) is discussed

An updated and detailed taxonomical account of the large Branchiopoda (Crustacea: Branchiopoda: Anostraca, Notostraca, Spinicaudata) from the Yale North India Expedition deposited in the Yale Peabody Natural History Museum

Padhye, Sameer M., Lazo-Wasem, Eric A. (2018): An updated and detailed taxonomical account of the large Branchiopoda (Crustacea: Branchiopoda: Anostraca, Notostraca, Spinicaudata) from the Yale North India Expedition deposited in the Yale Peabody Natural History Museum. Zootaxa 4394 (2): 207-218, DOI: https://doi.org/10.11646/zootaxa.4394.2.

Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa

A new species of freshwater crab, Potamonautes danielsi sp. n., is described from the southern region of the KwaZulu-Natal Province, South Africa. Potamonautes danielsi most closely resembles P. sidneyi which is re-described here, but can be distinguished by a suite of key morphological characters including carapace shape and width, slim pereopods, inflated propodi of the chelipeds, and the shape and terminal segment length:subterminal segment length ratio of the 1st gonopod. In a previous study (Gouws et al. 2015), a 9.2–11.8 % divergence was found in the mitochondrial COI and 16S genes of the P. sidneyi clade, allowing for the delineation of a new species. Despite the clear molecular distinction between the two species, it is difficult to separate them based on individual morphological characters, as there is a great deal of overlap even among key features. The new species is found in slow-moving mountain streams and pools at high altitudes between Umhlanga and Mtamvuna, in KwaZulu-Natal

A new species of leech of the genus Placobdella (Hirudinida, Glossiphoniidae) from the American alligator (Alligator mississippiensis) in Mississippi, USA

To date, the only species of leech reported from the American Alligator, Alligator mississippiensis is Placobdella multilineata. Seven specimens of a previously undescribed species of Placobdella were collected from the feet and lower jaw of a single female alligator from the Pascagoula River Wildlife Management Area, George County, Mississippi. The new species was named Placobdella siddalli Richardson & Moser, sp. n., in honor of the contributions of Dr. Mark Siddall to our understanding of the biology of leeches. Placobdella siddalli Richardson & Moser is similar to other papillated members of the genus Placobdella, but differs from Placobdella ali Hughes & Siddall, 2007, Placobdella rugosa (Verrill, 1874), Placobdella multilineata Moore, 1953, and Placobdella papillifera (Verrill, 1872) in coloration, papillation, ventral striping, and in the possession of a relatively large caudal sucker. In addition, molecular comparison of 626 nucleotides of CO-I between the new species and other papillated leeches (P. ali, P. multilineata, Placobdella ornata, P. papillifera, P. rugosa) revealed interspecific differences of 14.0–18.0% (88–113 nucleotides)