Two new species of Pseudohapladena yamaguti, 1952 (Digenea: Waretrematidae) from mugilid fish from the Taiwan Straits,China

Two new species of Pseudohapladena Yamaguti, 1952 (Digenea: Waretrematidae) are described. Pseudohapladena megoorchis n. sp. was obtained from the intestine of Mugil engeli (Bleeker) (Mugilidae), and Pseudohapladena lizae n. sp. from the intestine of Liza carinatus (Cuvier and Valenciennes) (Mugilidae). Pseudohapladena megaorchis is the most closely related in general morphology to Pseudohapladena scatophagi Yamaguti, 1952, but differs from the latter in the position of the hermaphroditic sac, and in the nature and distribution of the vitellaria. Features of P. lizae distinguishing it from other species of the genus include the shorter uterus, which contains only 1 egg, and the lesser extent of the vitellaria.     

A key to the species of Mugilidae (Pisces) in the Northeastern Atlantic and Mediterranean, with explanatory notes

A key is given for identifying the eight species of Mugilidae of the Northeast Atlantic and Mediterranean. The use of Risso's names for four species is justified and explained and recognition is given to Tortonese's discovery that Mugil capurrii (Perugia) is a senior synonym of M. monodi Chabanaud. The relationship of Liza saliens to certain species of West and southern Africa is held to be additional support for the recognition of Protomugil Popov as a subgenus of Liza including these species. Chelon Röse, with type-species Mugil chelo Cuvier (= Chelon labrosus (Risso)), is recognized, following Jordan & Evermann (1917) and Schultz (1946), but its limits are differently conceived so as to include Crenimugil Schultz rather than Liza Jordan & Swain. The latter is held to comprise about 30 Old World species. The status of Chelon bispinosus (Bowdich) is discussed, with its bearing on possible population-differences in C. labrosus and the relationship of this species with C. crenilabis. The identity of Liza seheli (Forskål) is discussed and reasons are given for disagreeing with Wimpenny and others in applying this name to the species found at both ends of the Suez Canal zone. The latter is L. carinata (Ehrenberg in Cuvier & Valenciennes). Myxus maroccensis Mohr is believed to be a young Liza ramada.     

Descriptions of eight new species of <Emphasis Type="Italic">Ligophorus</Emphasis> Euzet &; Suriano, 1977 (Monogenea: Ancyrocephalidae) from Red Sea mullets

Eight new species of Ligophorus Euzet &; Suriano, 1977 (Monogenea: Ancyrocephalidae) are described from two species of mullets from the Red Sea. Ligophorus bykhowskyi n. sp. and L. zhangi n. sp. from Crenimugil crenilabris (Forsskål) differ from other species of the genus in the structure of the male copulatory organ, which has a simple accessory piece and a wide copulatory tube that arises from a large, single-chambered, expanded base. Ligophorus simpliciformis n. sp., L. bipartitus n. sp., L. campanulatus n. sp., L. mamaevi n. sp., L. lebedevi n. sp. and L. surianoae n. sp. from Liza carinata (Valenciennes) are differentiated on the basis of the morphometrics of the hard parts of the haptor and male copulatory organ. The eight species represent the first records of species directly attributed to Ligophorus from the Red Sea. Measurements of the haptoral hard-parts and the male copulatory organ of the new species are analysed with the aid of Principal Component Analysis. Three morphological types of male copulatory organ, five types of anchor, and two types of ventral and three types of dorsal bars were distinguished among these species. L. bykhowskyi and L. zhangi from C. crenilabris have the same type of male copulatory organ and anchors. Those species from Liza carinata have only one common morphological character, a thick copulatory tube, but have two types of accessory piece, four types of anchors and three types of bars. All species of Ligophorus found on mullets in the Red Sea have an accessory piece without a distal bifurcation and thus differ from most species of this genus from other regions of the world’s oceans.     

The Hemiuroidea (Digenea) of pomacentrid fishes (Perciformes) from Heron Island,Queensland, Australia

The following species are described, figured and/or recorded from pomacentrid fishes from the vicinity of the southern Great Barrier Reef coral cay Heron Island, with some mention of comparative material from other host families and locations: Derogenes pearsoni n. sp. from Amblyglyphidodon curacao, Amphiprion akindynos, Plectroglyphidodon lacrymatus (type-host), Pomacentrus chrysurus, P. moluccensis, P. tripunctatus and Pomacentrus sp.; Derogenes pharyngicola n. sp. from Abudefduf whitleyi (type-host) and Plectroglyphidodon dickii; Lecithaster stellatus from Abudefduf sexfasciatus, A. whitleyi, Acanthochromis polyacanthus, Amblyglyphidodon curacao, Chrysiptera flavipinnis, Parma polylepis, Pomacentrus chrysurus, P. moluccensis, P. cf. nagasakiensis, P. cf. pavo, P. vaiuli, P. wardi, Seriola lalandi, Cheilinus diagrammus, Lethrinus miniatus and Choerodon cyanodus from Heron Island plus Acanthopagrus australis and Rhabdosargus sarba from Moreton Bay; Aponurus laguncula from Pomacentrus moluccensis plus Callionymus limiceps, Platycephalus endrachtensis and P. fuscus from Moreton Bay; Hysterolecitha nahaensis from Abudefduf bengalensis, A. sexfasciatus, A. whitleyi, Acanthochromis polyacanthus, Amblyglyphidodon curacao, A. leucogaster, Amphiprion akindynos, A. perideraion, Chromis atripectoralis, C. nitida, C. viridis, Chrysiptera flavipinnis, C. cf. rollandi, Dascyllus aruanus, D. reticulatus, Parma polylepis, Pomacentrus chrysurus, P. moluccensis, P. cf. nagasakiensis, P. nigromarginatus, P. cf. pavo, P. tripunctatus, P. wardi and Pomacentrus sp.; Hysterolecitha heronensis n. sp. from Pomacentrus philippinus (type-host), P. amboinensis, P. moluccensis, P. nigromarginatus and Pomacentrus sp.; Hysterolecitha sp. innom. from Parma polylepis; Thulinia microrchis n. comb. (new syns Hysterolecitha microrchis, H. xesuri, H. tinkeri, Thulinia tinkeri, H. sigani) from Abudefduf bengalensis, A. sexfasciatus, A. whitleyi, Acanthochromis polyacanthus, Amphiprion perideraion, Dascyllus aruanus, D. reticulatus, Dischistodus melanotus, Parma polylepis, Plectroglyphidodon dickii, Pomacentrus amboinensis, P. moluccensis, P. philippinus, P. taeniometopon, Pomacentrus sp. and Stegastes apicalis, plus Chaetodon citrinellus, C. kleinii, Chaetodontoplus meredithi, Lethrinus miniatus, Plectropomus leopardus, Siganus doliatus, S. lineatus and S. vulpinus; Leclthocladium sp. juv from Abudefduf whitleyi, Lecithochirium sp. (? ghanense-group) from Dascyllus aruanus; Lecithochirium sp. juv. from Abudefduf whitleyi; unidentified non-ecsomate hemiuroids from Chrysiptera cf. rollandi, Parma polylepis, Pomacentrus chrysurus, P. wardi and Stegastes apicalis.     

Three species of opisthomonorchiine monorchiids (Digenea) in Carangoides spp. (Perciformes: Carangidae) from off New Caledonia, with a description of Opisthomonorchis dinema n. sp.

Three opisthomonorchiinae species are described from fishes obtained at the Fish Market in Nouméa, New Caledonia. Opisthomonorchis dinema n. sp. from Carangoides dinema Bleeker differs from the other recognised species in the genus by the long recurved genital atrium, arcing anteriorly. Also described are Opisthomonorchis carangis Yamaguti, 1952 from Carangoides sp. and Pseudopisthomonorchis thapari (Varma & Singh, 1979) n. comb. for Opisthomonorchis thapari Varma & Singh, 1979 from Carangoides chrysophrys (Cuvier). The features distinguishing Opisthomonorchis Yamaguti, 1952 and Pseudopisthomonorchis Madhavi, 1974 are discussed.     

Monorchiid trematodes of the painted sweetlips,Diagramma labiosum (Perciformes: Haemulidae), from the southern Great Barrier Reef,including a new genus and three new species

Five monorchiid species are reported from Diagramma labiosum Macleay (Perciformes: Haemulidae) collected from Heron Island on the southern Great Barrier Reef (GBR): two described species, Helicometroides longicollis Yamaguti, 1934 and Diplomonorchis kureh Machida, 2005 and three new species, including one new genus, Asymmetrostoma heronensis n. g., n. sp., Lasiotocus arrhichostoma n. sp. and Proctotrema addisoni n. sp. Helicometroides longicollis and D. kureh were previously reported from the closely related species Diagramma pictum (Thunberg) from Japan. Two further monorchiid species known from D. pictum, Genolopa plectorhynchi (Yamaguti, 1934) and Paraproctotrema fusiforme Yamaguti, 1934, appear to be absent from the southern Great Barrier Reef. Previous reports of two other monorchiids from D. labiosum from the GBR, Paramonorcheides pseudocaranxi Dove & Cribb, 1998 and Helicometroides vitellosus (Durio & Manter, 1968), are shown to have been made in error. The high richness of monorchiids and other trematode families in D. labiosum is consistent with that seen in other haemulids elsewhere.     

Species of Monogenoidea infecting the gill lamellae of the common silver-biddy <Emphasis Type="Italic">Gerres oyena</Emphasis> (Forsskål) and the common silver belly <Emphasis Type="Italic">Gerres subfasciatus</Emphasis> Cuvier (Perciformes: Gerreidae) in Moreton Bay,Queensland, Australia

As part of a survey of the parasites infecting the fishes of Moreton Bay, Queensland, Australia, the gill lamellae of two species, the common silver-biddy Gerres oyena (Forsskål) and the common silver belly Gerres subfasciatus Cuvier (both Gerreidae), were found infected with monogenoids as follows: Metahaliotrema filamentosum Venkatanarasaiah, 1981 (Dactylogyridae) was redescribed from G. oyena and recorded from G. subfasciatus (both new host records); Metahaliotrema imparilis n. sp., Protogyrodactylus monacanthus n. sp., Protogyrodactylus vulgaris n. sp. (all Dactylogyridae), Gyrodactylus xynus n. sp. (Gyrodactylidae), and Polylabris gerres (Sanders, 1944) Mamaev & Parukin, 1976 (Microcotylidae) were reported from G. subfasciatus; and Protogyrodactylus scalmophorus n. sp., Protogyrodactylus ichthyocercus n. sp., and Protogyrodactylus similis n. sp. were recorded from G. oyena. The new species are described, and the finding of M. filamentosum and P. gerres from Moreton Bay represent new geographic records. Haliotrema digyroides Zhang, 2001 and Haliotrema subancistroides Zhang, 2001 are transferred to Metahaliotrema Yamaguti, 1953 as Metahaliotrema digyroides (Zhang, 2001) n. comb. and Metahaliotrema subancistroides (Zhang, 2001) n. comb., respectively.     

New species and new records of Ergasilus Nordmann (Copepoda: Ergasilidae) from the gills of grey mullet (Mugilidae)

Four new Ergasilus species are described from five host species of grey mullet, family Mugilidae, held in the fish collections of The Natural History Museum, London. Ergasilus extensus n. sp. was found on Myxus petardi (Castelnau) from Australia, E. sittangenesis n. sp. on Sicamugil hamiltoni (Day) from Burma, E. piriformis n. sp. on Sicamugil cascasia (Hamilton Buchanan) from India, and E. ecuadorensis n. sp. on Mugil curema Valenciennes and M. hospes Jordan & Culver from Ecuador. New records of E. cyanopictus Caravalho, E. magnicornis Yin, E. orientalis Yamaguti and E. rostralis Ho, Jayarajian & Radhakrishnan on grey mullet are also given.     

Faustulid trematodes (Digenea) from marine fishes of Australia

Twelve species of faustulid trematode are described or redescribed from Australian marine fishes. Bacciger lesteri Bray, 1982 and B. sprenti Bray, 1982 are redescribed from Selenotoca multifasciata from Moreton Bay. It is suggested that the original host record for these species, Mugil sp., was incorrect. The genera Discogastroides, Odontocotyle and Pseudodiscogasteroides are synonymised with Paradiscogaster. The new combinations Paradiscogaster arabi (Hafeezullah & Siddiqi, 1970), P. hainanensis (Shen, 1970), P. indicus (Srivastava, 1939), P. macrostomus (Shimazu & Kamegai, 1990), P. ostracii (Yamaguti, 1934) and P. pritchardae (Gupta & Ahmad, 1978) are proposed. Discogasteroides hawaiensis Hanson, 1955 is synonymised with P. ostracii. P. macrostomus and P. ostracii are redescribed from Ostracion meleagris and O. cubicus from the Great Barrier Reef. P. farooqii Hafeezullah & Siddiqi, 1970 is redescribed from Monodactylus argenteus from Moreton Bay. The following new species are described: P. machidai n. sp. from Pomacanthus semicirculatus and P. sexstriatus from the Great Barrier Reef, P. dweorg n. sp. from Meuschenia galii, P. lobomyzon n. sp. from Tilodon sexfasciatus and P. habilis n. sp. from Pelates octolineatus, all from Western Australia. Antorchis pomacanthi (Hafeezullah & Siddiqi, 1970) Machida, 1975 is redescribed from Pomacanthus semicirculatus and P. sexstriatus from the Great Barrier Reef. The new combination Antorchis intermedius (Madhavi, 1975) is proposed for Parantorchis intermedius. Parayamagutia ostracionis is redescribed from O. cubicus from the Great Barrier Reef. Trigonocryptus conus is redescribed from Arothron hispidus from South-east Queensland and from A. nigropunctatus from the Great Barrier Reef. The new combination Trigonocryptus australiensis (Kurochkin, 1970) is proposed for Pseudodiscogasteroides australiensis. The Echinobrevicecinae is reduced to synonymy with the Faustulidae.     

Four new species of <Emphasis Type="Italic">Paradiscogaster</Emphasis> Yamaguti, 1934 (Digenea: Faustulidae) from batfishes (Perciformes: Ephippidae) on the Great Barrier Reef,Australia

Examination of three species of batfishes (Teleostei: Epphippidae) from off Lizard and Heron Islands on the Great Barrier Reef led to the discovery of specimens of the trematode genus Paradiscogaster Yamaguti, 1934 (Digenea: Faustulidae). Morphological analysis demonstrated that the new specimens represented four morphotypes which we interpret to be new species: Paradiscogaster martini n. sp., P. vichovae n. sp. and P. brayi n. sp. from Platax orbicularis (Forsskål) and P. pinnatus (Linnaeus) off Lizard Island, and P. nitschkei n. sp. from P. teira (Forsskål) off Heron Island. Published material was re-examined and the specimens identified as P. chaetodontis okinawensis Yamaguti, 1971 from P. pinnatus from Okinawa, Japan, actually represent the new species P. brayi n. sp., demonstrating that some species of Paradiscogaster have wide geographical distributions. ITS2 rDNA data for the four morphotypes differ by 4–39 base pairs confirming the delineation of the four species proposed. A feature of this study is the recognition of Platax spp. as an important host group for Paradiscogaster, with the new species placing them as the second richest host group for these parasites after the Chaetodontidae.     

Two new opecoelids (Digenea) in the flatfish Pseudorhombus jenynsi (Bleeker) from Shark Bay,Western Australia

The first marine fish digeneans recorded from Shark Bay, Western Australia are described from the flatfish Pseudorhombus jenynsi. Macvicaria dampieri n. sp. differs from the other members of the genus in its undivided, straight, saccular seminal vesicle, and the definition of the genus is extended to include this feature. The following new combinations are made: Macvicaria branchiostegi (Yamaguti, 1937) [originally Plagioporus] and M. cynoglossi (Madhavi, 1975) [originally P.]. Cainocreadium alanwilliamsi n. sp. is distinguished by the variable anterior extent of its excretory vesicle, which reaches to a level ranging between the posterior margin of the ventral sucker and just into the forebody, and by its relatively short forebody.     

Taxonomic revision and molecular phylogeny of the fig wasp genus AnidarnesBouček, 1993 (Hymenoptera: Sycophaginae)

Besides the pollinators (Agaonidae), several chalcidoid lineages of nonpollinating fig wasps are strictly dependent on Ficus (Moraceae) for reproduction. Overall, nonpollinating fig wasps have not received much consideration. Reliable phylogenetic and taxonomic frameworks are lacking for most groups, which hampers progress in our understanding of the evolution and functioning of fig wasp communities. Here we focus on Anidarnes Bou?ek (Sycophaginae), a member of the Neotropical fig wasp community. We present a detailed morphological analysis as well as the first molecular phylogeny of the genus inferred from two nuclear and two mitochondrial genes (Cytb, COI, EF‐1α and 28S rRNA, 3937 bp). Twelve species are recognised, illustrated and a key to their identification is provided. Of those, only three were previously described and are redescribed here: A. bicolor (Ashmead); A. globiceps (Mayr) and A. brevicauda Bou?ek. In addition, nine new species are described: Anidarnes brevior sp.n . Farache & Rasplus (Costa Rica); A. dissidens sp.n. Farache & Rasplus (Brazil); A. gracilis sp.n. Farache & Rasplus (Costa Rica); A. isophlebiae sp.n. Farache & Rasplus (Costa Rica); A. jimeneziae sp.n. Farache & Rasplus (Costa Rica); A. longiscutellum sp.n. Farache & Rasplus (Brazil); A. martinae sp.n. Farache & Rasplus (U.S.A., Florida); A. nigrus sp.n. Farache & Rasplus (Colombia) and A. rugosus sp.n. Farache & Rasplus (Brazil). Finally, phylogenetic relationships inferred using parsimony, bayesian and maximum likelihood methods are discussed in the light of our morphological observations and the host fig tree taxonomy.     

A new species of Plagioporus (Caudotestis) tyrrhenicus sp.n. and its 2 new parasitologic findings in Blennius pavo Risso, 1810]

In a survey of the helminth parasites of Blennius pavo Risso, 1810 three different species of digenea were collected. Plagioporus (Caudotestis) tyrrhenicus sp.n. is described, figured and compared with other species of the subgenus Plagioporus (Caudotestis) Issaitchikov, 1928. Plagioporus (Caudotestis) tyrrhenicus differs from P. (Caudotestis) azurionis Yamaguti, 1951 in the position of cirrus sac, in sucker ratio and size of the eggs; from P. (Caudotestis) sinitzini Mueller, 1934 for extent of excretory bladder and size of the eggs; from P. (Caudotestis) synagris Yamaguti, 1952 for size of the pharynx and oesophagus, extent of the vitellaria and size of the eggs. Lepocreadium album (Stossich, 1890) Stossich, 1904 is redescribed, figured and recorded for the first time in Blennius pavo. Deretrema sp. is figured and recorded for the first time in the same host.     

Pseudobacciger cheneyae n. sp. (Digenea: Gymnophalloidea) from Weber’s chromis (Chromis weberi Fowler & Bean) (Perciformes: Pomacentridae) at Lizard Island,Great Barrier Reef,Australia

A new species of digenean, Pseudobacciger cheneyae n. sp., is described from the intestines of Weber’s chromis (Chromis weberi Fowler & Bean) from off Lizard Island, Great Barrier Reef, Australia. This species differs from the three described species of Pseudobacciger Nahhas & Cable, 1964 [P. cablei Madhavi, 1975, P. harengulae Yamaguti, 1938 and P. manteri Nahhas & Cable, 1964] in combinations of the size of the suckers and the length of the caeca. The host of the present species is a perciform (Family Pomacentridae) which contrasts with previous records of the genus which are almost exclusively from clupeiform fishes. The genus Pseudobacciger is presently recognised within the family Faustulidae (Poche, 1926) but phylogenetic analyses of 28S and ITS2 rDNA show that the new species bears no relationship to species of four other faustulid genera (Antorchis Linton, 1911, Bacciger Nicoll, 1924, Paradiscogaster Yamaguti, 1934 and Trigonocryptus Martin, 1958) but that instead it is nested within the Gymnophalloidea (Odhner, 1905) as sister to the Tandanicolidae (Johnston, 1927). This result suggests that the Faustulidae is polyphyletic.     

A revision of the species of <Emphasis Type="Italic">Saturnius</Emphasis> Manter, 1969 (Digenea: Hemiuridae), parasites of mullets (Teleostei: Mugilidae)

The genus Saturnius Manter, 1969 is defined, its species re-examined and a key to the species presented. S. overstreeti n. sp. is described from Mugil soiuy Basilewsky and M. cephalus L. from the Russian coast of the Sea of Japan and distinguished from the morphologically related S. papernai Overstreet, 1977 and S. maurepasi Overstreet, 1977. S. segmentatus Manter, 1969 is redescribed on the basis of the type- and newly collected material from M. cephalus on the Russian coast of the Sea of Japan. The morphometric variation of S. papernai is studied based on newly collected material from Liza aurata (Risso) in the Ebro Delta and off Santa Pola, Spain. The comparisons reveal lower ranges of most metrical features than previously known. A principal component analysis, carried out after adding the new data to those of Blasco-Costa et al. (2006), confirms the species identification. Other valid species recognised are S. mugilis (Yamaguti, 1970), S. maurepasi, S. belizensis Fischthal, 1977, S. dimitrovi Blasco-Costa et al., 2006 and S. minutus Blasco-Costa et al., 2006. Forms considered species inquirendae are S. valamugilis Rekharani & Madhavi, 1984, Bunocotyle constrictus Domnich & Sarabeev, 1999 [=S. papernai of Domnich & Sarabeev (2000a, b, c, d)], B. mugilis Yamaguti, 1970 of Solonchenko (1976) and S. mugilis of Dmitrieva & Gaevskaya (2001). Host and locality information is given in detail for all species. Lisa ramado (Risso) and Chelon labrosus (Cuvier) are new host records for S. papernai (sensu stricto) and S. dimitrovi. L. aurata is a new host record for S. dimitrovi and S. minutus, and L. saliens (Risso) is a new host record for S. minutus.     

Three species of Pycnadenoides Yamaguti, 1938 (Digenea: Opecoelidae), including two new species from temperate marine fishes of Australia

Pycnadenoides pagrosomi Yamaguti, 1938 and P. reversati n. sp. from Pagrus auratus (Sparidae) and P. invenustus n. sp. from Nemadactylus valenciennesi (Cheilodactylidae) are described from the temperate marine waters off south-west Western Australia and south-east Queensland. The difference in the anterior extent of the vitelline follicles observed in P. reversati n. sp. recovered from off south-east Queensland waters and the material from off Western Australia is discussed. P. reversati n. sp. is distinguished from P. pagrosomi mainly in the position of the genital pore and in the arrangement of the testes, and from P. invenustus n. sp. in the posterior extent of the cirrus-sac. P. reversati belongs to the group of species with a short cirrus-sac and P. invenustus to the group with the cirrus-sac reaching into the anterior hindbody.     

Dactylosoma hannesi n. sp. (Dactylosomatidae,Piroplasmia) Found in the Blood of Grey Mullets (Mugilidae) from South Africa1

ABSTRACT. A new species of Dactylosoma (Dactylosomatidae, Piroplasmia), for which the name Dactylosoma hannesi n. sp. is proposed, was discovered in blood erythrocytes of Mugil cephalus, Liza richardsoni, and L. dumerili (Mugilidae) from Swartkops estuary, located east of Port Elizabeth, South Africa. The life cycle of this species differs in some respects from that described for all other known species of Dactylosoma and Babesiosoma. Mature schizonts contain eight nuclei but undergo division only to two to four daughter cells. During cytoplasmic cleavage, schizonts assume triad, rosette, or cruciform shapes. Merozoites are finally produced through a series of binary fissions of these daughter cells which may also be involved in additional nuclear divisions.     

The brachylaimidae (Trematoda: Digenea) of Australian native mammals and birds,including descriptions of Dasyurotrema n. g. and four new species of Brachylaima

The Brachylaimidae of Australian native animals are revised. Brachylaima dasyuri (Johnston, 1913) is redescribed from Dasyurus viverrinus, Phascogale tapoatafa and Isoodon macrourus. B. simile (Johnston, 1913) is removed from synonymy with B. dasyuri, reinstated as a valid species and redescribed from Perameles nasuta, Isoodon obesulus and Antechinus stuartii. B. antechini Peisley & Howell, 1975 is reduced to synonymy with B. simile. B. brindabellensis n. sp. is described from Rattus fuscipes. B. walterae n. sp. is described from Antechinus swainsonii and A. stuartii. B. delecta n. sp. is described from Antechinus flavipes. B. sandarsae n. sp. is described from Antechinus godmani. B. pulchellum (Johnston, 1917) is redescribed from Leucosarcia melanoleuca. An unnamed Brachylaima species is described from Isoodon macrourus. New host records are Brachylaima dasyuri from Phascogale tapoatafa and B. simile from Perameles nasuta. Dasyurotrema mascomai n. g., n. sp. is described from Antechinus swainsonii. The new genus is placed in the Panopistinae. It differs from the existing genera by having a single loop of the uterus passing anterior to the ventral sucker and the genital pore posterior to the posterior testis but still distinctly ventral. A second species of Dasyurotrema is recorded, but not described, from Antechinus stuartii. Brachylaimid metacercariae are described from Rhytida capillacea, Helicarion virens, H. mastersi and Vercularion strangei. In no case was a host species found to harbour more than one species from any brachylaimid genus at a single geographical site.