Rachael A. Peart

A revision of the Australian Trichobranchidae (Polychaeta)

The family Trichobranchidae is represented inAustralian waters by ten species(Artacamella dibranchiata Knox & Cameron, 1971,A. torulosa, sp. nov.,A. tribranchiata, sp. nov.,Terebellides kowinka, sp. nov.,T. mundora, sp. nov., T. narribri,sp. nov., T. woolawa, sp.nov.,Octobranchus myunus, sp.nov.,Trichobranchus bunnabus, sp. nov.andT. gorreekis, sp. nov.) in four genera, of which ninespecies are new. Previously the ‘cosmopolitan species’Terebellides stroemii Sars, 1835 had been widelyreported from Australia; examination of material from near the type locality,Norway, revealed that the Australian material differed and represented fournew species. Terebellides stroemii does not occur inAustralian waters. Terebellides stroemii is redescribed. Additional charactersare described for the genus which may also facilitate the separation of thesespecies. A key to the genera and species present in Australia is given, aswell as tables summarising the characters of all described species in thesegenera.

A revision of the Cymadusa filosa complex (Crustacea: Amphipoda: Corophioidea: Ampithoidae)

Cymadusa filosa Savigny, 1816 (type locality Egypt) has long been considered a polymorphic, pantropical species (Ledoyer, 1984; Barnard and Karaman, 1991). Since its original description, C. filosa has been recorded globally, from southern Africa (K. H. Barnard, 1916) to New Caledonian waters (Ledoyer, 1984). In this paper I will show that Cymadusa filosa, type species of the genus Cymadusa, is in fact a species complex, and this situation has confused the generic concept. Cymadusa filosa is redescribed and thoroughly illustrated, based on new material from the Mediterranean Sea, and a neotype is established. Other species to which the C. filosa name has been misapplied are identified, described and illustrated. Two new species, C. tattersalli n. sp. from Australia and C. ledoyeri n. sp. from Madagascar, are described and illustrated. Three previously described species, Cymadusa setosa (Haswell, 1879), C. imbroglio Rabindranath, 1972 and C. vadosa Imbach, 1967, have been removed from synonymy with Cymadusa filosa and have been redescribed and re-illustrated. Based on these results a new diagnosis is developed for the genus and a key to species of the C. filosa complex is provided.

Amphipod family distributions around Iceland

Abstract Amphipod crustaceans were collected at all 55 stations sampled with an epibenthic sledge during two IceAGE expeditions (Icelandic marine Animals: Genetics and Ecology) in 2011 and 2013. In total, 34 amphipod families and three superfamilies were recorded in the samples. Distribution maps are presented for each taxon along with a summary of the regional taxonomy for the group. Statistical analyses based on presence/absence data revealed a pattern of family distributions that correlated with sampling depth. Clustering according to the geographic location of the stations (northernmost North Atlantic Sea and Arctic Ocean) can also be observed. IceAGE data for the Amphilochidae and Oedicerotidae were analysed on species level; in case of the Amphilochidae they were compared to the findings from a previous Icelandic benthic survey, BIOICE (Benthic Invertebrates of Icelandic waters), which also identified a high abundance of amphipod fauna.

Two new genera and four new species of ampithoids (Amphipoda: Ampithoidae) from southern Australian waters

This paper reports for the first time two new genera (Austrothoe and Paranexes) and four new species (Austrothoe jimlowryi-type species, A. ochos, Paranexes gallaharae, and P. yallingup-type species) of Ampithoidae (Amphipoda). The two new genera (and all four species) have only been recorded from southern Australian waters, in particular, off the coasts of southern WA, VIC, and NSW. Austrothoe can be distinguished from other ampithoid genera by having a denticulated, subrectangular telson and strongly prehensile, almost subchelate pereiopods 6 and 7. Paranexes is distinguished from other ampithoid genera by having the epistome and upper lip directed backwards, and no lateral, distal peduncular projection on the male first uropod. An updated key to the genera of Ampithoidae is also provided, as well as keys to the species within each of the new genera.

Ampeliscidae (Crustacea, Amphipoda) from the IceAGE expeditions

Abstract Ampeliscidae has been recorded extensively from Icelandic waters by many detailed reports. Material collected from the IceAGE (Icelandic marine animals: Genetics and Ecology) 1 and 2 expeditions has resulted in a reasonably expected collection of ampeliscid amphipod species and distributions. However, as seems to be the trend in amphipod systematics, there are ever-present species complexes. Resulting from this, two species new to the genus Haploops are presented. Additionally, a new species and new record and key of the genus Byblisoides is also presented.

Three new species of Exampithoe from Australia and New Zealand (Ampithoidae: Amphipoda: Crustacea)

Three new species of Exampithoe are described from Australia and New Zealand. Material described here corroborates the peculiar mandibular palp variability, with either a two- or three- articulate palp reported for species within the genus Exampithoe compared to the absence of the mandibular palp in Melanesius. The Exampthoinae remain a Southern Hemisphere subfamily with nine described species.

Ampithoid amphipods from the South Pacific: Papua New Guinea, French Polynesia and New Caledonia

This paper documents 13 known and seven new species of Ampithoidae from three South Pacific locations: Papua New Guinea; the Austral Isles, French Polynesia; and the Loyalty Islands, New Caledonia. The new species Ampithoe ricaudyana, Ampithoe takeuchii, Cymadusa lituus, Cymadusa paradisaea, Plumithoe boulari, Sunamphitoe kanaka and Sunamphitoe tjiboui are described. http://www.zoobank.org/urn:lsid:zoobank.org:pub:590B4276-1DFA-40C1-B562-A7B5FC1E6A5C

Antarctic and New Zealand Byblisoides (Amphipoda: Ampeliscidae) with a key to the world species

The family Ampeliscidae is a species diverse family ranging from shallow waters to over 4000 m depth. Within this family, however, one genus, Byblisoides has few species and is generally found in deep water. The conservative morphology of other species of Byblisoides is also evident in the new species described here. This study extends the known species composition of the genus from seven species to nine. A key to world species is updated.

Ampithoidae (Crustacea, Amphipoda) from New Zealand

Abstract Ampithoidae is a family of marine Amphipoda with approximately 230 species, belonging to 16 genera. The family has a worldwide distribution as algal dwellers. So far only five species are known from New Zealand. Recent collections and examination of historic collection material added two new species, which are described herein. An overview of and a key to the New Zealand Ampithoidae is provided.

Figure 23 In New Species And New Records Of Ampithoidae (Peracarida: Amphipoda) From Australian Waters

FIGURE 23. Cymadusa hallex sp. nov., holotype male, 14.5 mm, WAM C 52212, Woodman Point, Western Australia, scales 0.1 mm.