First report of a species of Folliculovarium Gu & Shen, 1983 (Bucephalidae: Prosorhynchinae) from European marine waters,with the description of F. mediterraneum n. sp.

Folliculovarium mediterraneum n. sp. is described and figured in detail from the intestine of the Mediterranean moray eel Muraena helena (Muraenidae) in the Scandola Nature Reserve, off Corsica in the Western Mediterranean. This new species closely resembles F. gymnothoracis Gu and Shen, 1983 and F. xishaense Gu and Shen, 1983 from marine fishes off China, but it may differ from both in not having specialised circum-rynchal spines. It differs from the former by having slightly larger eggs and a longer oesophagus, and from F. xishaense by having tegumental spines, a longer oesophagus and a non-related host (an eel rather than a serranid). The status of Folliculovarium, which was recently treated as a genus inquirendum by Overstreet and Curran (2002), is clarified by its multilobed rather than follicular ovary and other features, and remains in the Prosorhynchinae (Bucephalidae).     

Three new species of Prosorhynchoides (Digenea: Bucephalidae) from Tylosurus gavialoides (Belonidae) in Moreton Bay,Queensland, Australia

We surveyed 30 individuals of Tylosurus gavialoides (Castelnau) (Belonidae) collected from Moreton Bay, Queensland, Australia, and describe three new species of Prosorhynchoides Dollfus, 1929 from them. The new species are morphologically distinct from existing Prosorhynchoides spp. and 28S and ITS-2 ribosomal DNA data further supports our morphological findings. We also conduct the first mitochondrial DNA analysis of species of Prosorhynchoides. The new species from T. gavialoides form a strongly supported clade on the basis of the two ribosomal markers, further supporting the emerging hypothesis that bucephaline clades are strongly associated with host groups. We have not observed any of the new species reported here in over 3500 surveyed individuals of other piscivorous fish in Australia, suggesting that these species are host-specific at least to belonids, if not to only T. gavialoides. Our findings support previous reports that suggest that belonids are exceptional hosts for bucephalids. We predict that further sampling of the numerous other belonid species present in Australian waters, for which nothing is known of the bucephalid fauna, will uncover further bucephalid richness.     

Two new species of bucephalids (Digenea: Bucephalidae) parasitic in freshwater fishes of Argentina

Two new species of bucephalids (Digenea: Bucephalidae) were found parasitizing freshwater fishes of Argentina. Prosorhynchoides cambapuntaensis sp. n. from Salminus maxillosus (Characidae) is characterised by the tegument covered with two kinds of spines, scale-like spines anteriorly and fine spines posteriorly; uterine loops reaching the vitelline arch in the pre-oral region; and the Laurer's canal short, opening dorsally immediately posterior to the ovary. Rhipidocotyle santanaensis sp. n. from Acestrorhynchus pantaneiro (Acestrorhynchidae) is characterised by the rhynchus with two lateral projections; the testes arranged in tandem or slightly diagonal; and the vitelline follicles forming an arch in the pre-oral region.     

Prosorhynchine trematodes (Digenea: Bucephalidae) from epinephelines (Perciformes: Serranidae) on the Great Barrier Reef,Australia

Six new species of bucephalid trematodes from the prosorhynchine bucephalid genera Prosorhynchus Odhner, 1905 and Neidhartia Nagaty, 1937 are reported from the epinepheline genera Cephalopholis, Cromileptes, Epinephelus and Variola on the Great Barrier Reef, Australia. Two species of Prosorhynchus and one of Neidhartia are reported from Epinephelus spp., P. jexi n. sp. from E. quoyanus, P. lafii n. sp. from E. fuscoguttatus and N. epinepheli n. sp. from E. maculatus. The other three new species are P. robertsthomsoni n. sp. from Cephalopholis argus, C. cyanostigma and C. miniata, P. conorjonesi n. sp. from Cromileptes altivelis, and P. milleri n. sp. from Variola louti. Extensive examinations of other piscivorous fish species from the Great Barrier Reef have not revealed these six bucephalid species, which appear to be restricted at least to the host genera from which they are reported here.     

Two species ofCoitocaecum Nicoll, 1915 (Digenea: Opecoelidae) from Moreton Bay,Queensland, Australia

Two species ofCoitocaecum Nicoll, 1915,C. gymnophallum Nicoll, 1915 andC. michaeli n. sp., are recorded, described and figured from the intestine ofAcanthopagrus australis from Moreton Bay, off south east Queensland. The holotype ofC. gymnophallum Nicoll, 1915 is examined, measured and figured for comparison.C. glandulosum Yamaguti, 1934 andC. robustum Wang, 1984 are reduced to synonymy withC. gymnophallum. The host specificity ofCoitocaecum spp. is discussed.     

Two species of Prodistomum Linton, 1910 (Digenea: Lepocreadiidae) from marine fishes of Australia

Prodistomum angelae (Kruse, 1981) n. comb. [originally Lepocreadium] is redescribed from the type-host, Scorpis georgiana, from off southwestern Western Australia. P. keyam n. sp. is described from Monodactylus argenteus from off southeastern Queensland. It differs from other members of the genus in its short ejaculatory duct. The genus Prodistomum Linton is discussed and redefined, and an updated key and record list of the nine recognised species are given.     

Gymnothorax eurygnathos, a new moray from the Gulf of California (Anguilliformes: Muraenidae)

A new species of moray eel from deep water in the Gulf of California is described. It is dark brownish-black with an overall pattern of pale irregular blotches; a short, broad head; wide, triangular jaws; deeply serrate and partially biserial teeth; dorsal-fin origin above and behind gill opening; and 10 predorsal, 66 preanal, and 134 total vertebrae. This combination of characters is not shared by any other moray species.     

Cavichia, a replacement generic name for Caragonia takiya, Cavichioli & Mejdalani (Hemiptera: Cicadellidae)

Cavichia nom. nov. is proposed for Caragonia Takiya, Cavichioli & Mejdalani, 2003 (Hemiptera: Cicadellidae), preoccupied by Caragonia Gemminger & Harold, 1870 (Coleoptera: Tenebrionidae).     

Diplobulbus brayi n. sp. (Digenea: Opecoelidae) from Odax acroptilus (Perciformes: Odacidae) off Western Australia

Diplobulbus brayi n. sp. is described from the small intestine of Odax acroptilus (Perciformes: Odacidae) from Point Peron in southern Western Australia. One of the five previously described species of Diplobulbus, D. vitellosus Bilqees, 1972 from Tetraodon lunaris (now Lagocephalus lunaris), is synonymised with Alloheterolebes indicus (Gupta, 1968) Hafeezullah, 1971, which is known from the same host in the Indian Ocean. D. brayi n. sp. can be distinguished from the remaining four species of Diplobulbus by the distinct interruption of the vitelline follicles at the ventral sucker, its more elongate form and its long post-testicular space. Diplobulbus is so far restricted to the Indo-Pacific region and appears to be stenoxenic to labroid fishes. This is the first record of a trematode from an odacid fish.     

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.     

Four closely related but forgotten species of Rhipidocotyle Diesing, 1858 (Digenea: Bucephalidae) in fishes from European seas

The following species of Rhipidocotyle are described: R. minima (Wagener, 1852) from Chelidonichthys gurnardus, C. lastoviza and Aspitrigla cuculus at various localities off the British Isles; R. nicolli n. sp. from A. cuculus off Plymouth, SW England; R. triglae (van Beneden, 1870) from C. lucernus in the Gulf of Marseilles, western Mediterranean; and R. viperae (van Beneden, 1870) from Echiichthys vipera at various localities off the British Isles. The distinguishing features of the species are discussed in detail. A list of the bucephalid species reported from the Mediterranean Sea is appended.     

Hintoniella,a replacement name for the preoccupied generic name Helonastes Hinton, 1968 (Coleoptera: Byrrhoidea: Elmidae)

Abstract

A replacement name, Hintoniella is proposed for the generic name Helonastes Hinton, 1968 in the family Elmidae (Coleoptera: Byrrhoidea).     

Dactylomyza gibsoni n. g., n. sp. (Digenea: Opecoelidae) from Schuettea woodwardi (Waite) (Monodactylidae) from off Western Australia

An opecoelid digenean, Dactylomyza gibsoni n. g., n. sp. is described and figured from Schuettea woodwardi (Waite), a monodactylid from off the coast of Western Australia. The new genus conforms to the concept of the opecoelid subfamily Opecoelinae. The resemblance of the new genus to three other opecoelid genera, Pseudopecoeloides Yamaguti, 1940, Opecoeloides Odhner, 1928 and Poracanthium Dollfus, 1948, is discussed. Dactylomyza n. g. is distinguished from these morphologically similar worms on the basis of its median genital pore, ventral sucker appendages, uroproct and the absence of an accessory sucker. Pseudopecoeloides equesi Manter, 1947 is transferred to the new genus as Dactylomyza equesi (Manter, 1947) n. comb.     

A new species of Pseudopecoelus von Wicklen, 1946 (Digenea: Opecoelidae) from the orange roughy Hoplostethus atlanticus Collett, 1889 (Trachichthyidae) from off southeastern Australia

A new species, Pseudopecoelus sewelli, is described from the deep-sea fish Hoplostethus atlanticus from off southeastern Australia. It is an elongate form with considerable variation in such important characters as the anterior vitelline extent, the sucker ratio and the egg-size. The features distinguishing this species from five related forms are combinations of the sucker ratio, egg-size, lobation of gonads, presence or absence of a cirrus-sac and the position of the genital pore.     

Heterobucephalopsine and prosorhynchine trematodes (Digenea: Bucephalidae) from teleost fishes of Moreton Bay,Queensland, Australia,with the description of two new species

Eight species of the trematode family Bucephalidae Poche, 1907 are reported from teleost fishes in Moreton Bay, Queensland, Australia. Heterobucephalopsis yongi n. sp. is described from Gymnothorax eurostus (Muraenidae); the new form is distinguished from its congeners in the possession of a tiny cirrus-sac relative to body length, the length of the caecum, the position of the mouth and pharynx, and the position of the testes and ovary. Two known species of Dollfustrema Eckmann, 1934, D. durum Nolan, Curran, Miller, Cutmore, Cantacessi & Cribb, 2015 and D. gibsoni Nolan & Cribb, 2010, are reported from Gymnothorax pseudothyrsoideus (Bleeker) (Muraenidae); although both species were described from Australian waters, this represents the first reports from Moreton Bay and G. pseudothyrsoideus. Four species of Prosorhynchus Odhner, 1905 are reported, including one new, P. brayi n. sp., which is described from Epinephelus coioides (Hamilton) (Serranidae); P. brayi n. sp. is distinguished from its congeners in the possession of vitelline follicles in a confluent arc distinctly posterior to a conical rhynchus, uterine coils that do not extend anterior to the vitelline arc, contiguous testes, a cirrus-sac that reaches anteriorly to at least the level of the posterior testis and a short excretory vesicle. Three known species of Prosorhynchus are reported from Australia, for the first time: P. luzonicus Velasquez, 1959 and P. maternus Bray & Justine, 2006 from E. coioides and Prosorhynchus platycephali (Yamaguti, 1934) Srivastava, 1938 from Ambiserrula jugosa (McCulloch) and Inegocia japonica (Cuvier) (Platycephalidae). Skrjabiniella Issaitschikow, 1928 is re-recognised for new specimens of Skrjabiniella uniporus (Ozaki, 1924) n. comb. collected from Conger cinereus Rüppell (Congridae); three additional species of Prosorhynchus are considered members of this genus, two of which are synonymised with S. uniporus.     

Description of three species of Holorchis Stossich, 1901 (Digenea: Lepocreadiidae) from marine fishes off Corsica

Three species of Holorchis are redescribed from marine fishes from off Corsica. They are: Holorchis pycnoporus from Diplodus vulgaris, D. sargus, Lithognathus mormyrus, Pagellus erythrinus, Sparus pagrus and Symphodus roissali; H. micracanthum from Sparus pagrus and Pagellus erythrinus; and H. legendrei from Mullus surmuletus. The characteristics differentiating these species are discussed, in particular those separating H. pycnoporus and H. legendrei, species which previously have been considered synonyms. The internal morphology of the cirrus-sac differs distinctly between these forms, which also have microhabitat and host differences.     

A new species of the genus <Emphasis Type="Italic">Diaphenchelys</Emphasis> (Anguilliformes: Muraenidae) from Thailand

A new species of moray eel, Diaphenchelys dalmatian is described based on five specimens [289.8–503.0 mm total length (TL)] collected from the western coast of peninsular Thailand and the Gulf of Thailand. It can be easily distinguished from Diaphenchelys pelonates McCosker and Randall 2007, another species of the genus Diaphenchelys McCosker and Randall 2007, by its coloration (ground color white with brown dalmatian-like spots vs. brown with pale vermiculate pattern). The present new species also differs from D. pelonates in its longer tail (62.0–64.6% TL vs. 59.6–61.5%), fewer infraorbital pores along upper lip (three vs. four), fewer mandibular pores (five vs. six or seven), and fewer vertebral counts (preanal vertebrae 43–46 vs. 55–58; total 126–131 vs. 153–155). Diaphenchelys is closely similar to the genus Strophidon McClelland 1844 in the shape of neurocranium, the elongate body, low vertical fins, eye location, jaw shape, and presence of inner mandibular teeth. However, both differ in the vertebral counts (126–155 in Diaphenchelys vs. 164–208 in Strophidon) and coloration (prominent pattern vs. uniform).     

Navia, a replacement generic name for Euterpia Navia & Flechtmann (Prostigmata: Eriophyoidea: Eriophyidae)

Navia nom. nov. is proposed for Euterpia Navia & Flechtmann, 2005 (Prostigmata: Eriophyoidea), preoccupied by Euterpia Bondar, 1942 (Insecta: Coleoptera: Curculionidae).     

Urogonimus macrostomus (Digenea: Leucochloridiidae) from the rustic bunting, Emberiza rustica, in Japan

Some trematodes were found in the cloaca of a rustic bunting (Emberiza rustica) captured in Tsushima Islands, Japan. From their morphological characters and distribution, the flukes were identified as Urogonimus macrostomus. The phylogenetic relationship between this fluke and related species was inferred from the 28S rRNA gene sequences, and the gene sequence of the fluke was found to differ at only 4 nucleotide positions from that of U. macrostomus reported from Ukraine. This is the first report of this species in Japan.