Caridean shrimps (Crustacea, Decapoda) from Hansa Bay, Papua New Guinea: Bresiliidae, Hippolytidae, Pandalidae, Pasiphaeidae, Processidae, Rhynchocinetidae, Stylodactylidae and Thalassocarididae

The present contribution deals with the caridean shrimp fauna of Hansa Bay of the families Bresiliidae, Hippolytidae, Pandalidae, Pasiphaeidae, Processidae, Rhynchocinetidae, Stylodactylidae and Thalassocarididae. Sixteen species are dealt with, of which 14 are new records for Papua New Guinea

Pontoniinae (Crustacea: Decapoda: Palaemonidea) associated with bivalve molluscs from Hansa Bay, Papua New Guinea

Eleven species of Pontoniinae (Decapoda: Caridea) are recorded as associates from large bivalves in Hansa Bay, Madang Province, Papua New Guinea. Nine species are recorded as new to the fauna of Papua New Guinea. Morphological details, colour notes and host records of all species are provided. The taxonomic status of Paranchistus pycnodontae Bruce, 1978 in relation to P. serenei Bruce and P. spondylis Suzuki is discussed

Caridean shrimps (Crustacea, Decapoda) from Hansa Bay, Papua New Guinea: Palaemonidae and Gnathophyllidae

59 species of palaemonoid shrimps (Crustacea, Decapoda) are recorded from Hansa Bay, along the northern coastline of Papua New Guinea. The present study raises the total number of marine palaemonoid shrimp species from Hansa Bay to 76, of which 71 species belong to the subfamily Pontoniinae The total number for Papua New Guinea is now raised from 13 at the beginning of the century and 20 prior to the start of studies in Hansa Bay to a total of 82 species

A new species of shrimp of the genus <i>Anachlorocurtis</i> Hayashi, 1975 from the Red Sea, with range extension of <i>A. commensalis</i> Hayashi, 1975 (Crustacea, Decapoda, Pandalidae)

A new species of pandalid shrimp Anachlorocurtis occidentalis sp. n., associated with antipatharian corals, is described and illustrated from the north-eastern Red Sea. This new species is closely related to Anachlorocurtis commensalis Hayashi, 1975, the only other species in the genus, and can be distinguished by the more slender body and appendages; the carapace with 3 large, and one small, subtriangular lobes in the middorsal line; a flattened dorsal outline of the third abdominal segment; the sixth abdominal segment twice as long as fifth one; propodi of the ambulatory pereiopods bearing only a single posterior spinule; and harbouring 3–5 pairs of dorsolateral spines on the telson. A revised generic diagnosis is provided here to accommodate the present new species. The genetic divergence of mitochondrial gene cytochrome c oxidase subunit I (COI) between Anachlorocurtis occidentalis sp. n., and A. commensalis is 15.2–15.4%. Molecular analysis also confirmed a sister position of the genus Anachlorocurtis to Miropandalus. The present records of A. commensalis from Taiwan constitute an extension of the known range of the species

Global biogeography, cryptic species and systematic issues in the shrimp genus <i>Hippolyte</i> Leach, 1814 (Decapoda: Caridea: Hippolytidae) by multimarker analyses

Hippolyte is a genus of small bodied marine shrimps, with a global distribution. Here, we studied the phylogenetic and biogeographic relationships amongst the species of this genus with two mitochondrial and two nuclear markers, using Bayesian Inference, Maximum Likelihood, genetic divergence, molecular clock and S-DIVA. In addition, the Indo-West Pacific genus Alcyonohippolyte was included. Based on sequences from 57 specimens of 27 species, we recovered a robust biogeographic scenario that shows the Indo-West Pacific as the probable ancestral area of the genus Hippolyte, which emerged in the Paleocene, followed by dispersal in three general directions: (1) South Pacific, (2) eastern Atlantic and Mediterranean Sea and (3) Americas, the latter with a primary colonization in the eastern Pacific followed by a radiation into the western Atlantic. Our analysis reveals that the species of the H. ventricosa group do not constitute a monophyletic group and Alcyonohippolyte does not constitute a reciprocally monophyletic group to Hippolyte, with both genera herein synonimised. The relationships and systematic status of several transisthmian and Atlantic species are clarified

Atyidae and Palaemonidae (Crustacea: Decapoda: Caridea) of Bocas del Toro, Panama.

The present contribution is a preliminary report on the freshwater caridean fauna of Bocas del Toro province, northeastern Panama, based on field collections carried out during a Shrimp Taxonomy Workshop at the STRI station in Bocas del Toro in August 2008. A total of eight species from two families, Atyidae and Palaemonidae, were collected at 17 different collection sites in the rivers, streams and ponds on several islands of the Bocas del Toro archipelago and the adjacent mainland. The species reported herein are Atya scabra (Leach, 1815), Jonga serrei (Bouvier, 1909), Micratya poeyi (Guérin-Méneville, 1855), Potimirim glabra (Kingsley, 1878), P. potimirim (Müller, 1881) (Atyidae), Palaemon pandaliformis (Stimpson, 1871), Macrobrachium acanthurus (Wiegmann, 1836) and M. crenulatum Holthuis, 1950 (Palaemonidae). The record of J. serrei is the first for Panama, and M. poeyi a P. glabra the first for Bocas del Toro province