The erection of Pelecanema n. g. (Nematoda: Spirurida: Acuariidae), with redescriptions of P. sirry (Khalil, 1931) n. comb. and P. pelecani (Johnston & Mawson, 1942) n. comb.

Pelecanema n. g. is erected for P. sirry (Khalil, 1931) n. comb., syn. Synhimantus sirry Khalil, 1931 (type-species) and P. pelecani (Johnston & Mawson, 1942) n. comb., syn. Dispharynx pelecani Johnston & Mawson, 1942. In the structure of its cordons, consisting of two rows of delicate cuticular plates, the new genus is similar to Synhimantus Railliet, Henry & Sisoff, 1912, Dispharynx Railliet, Henry & Sisoff, 1912, Chordatortilis Machado de Mendon?a & Olivera de Rodrigues, 1965 and Parachordatortilis Mutafchiev, Santoro & Georgiev, 2010. Pelecanema sirry, a parasite of Pelecanus onocrotalus L. and P. crispus Bruch (Pelecaniformes, Pelecanidae) in Africa (Egypt and Senegal) and Europe (Ukraine and Bulgaria), is redescribed using light and scanning electron microscopy on the basis of specimens from P. crispus from Bulgaria. Pelecanema pelecani, a parasite of Pelecanus conspicillatus Temminck in Australia, is also redescribed using light microscopy on the basis of specimens from its type-host and type-locality. In contrast to a previous opinion recognising Pelecanema sirry and P. pelecani as synonyms, the two species are considered distinct and P. pelecani is validated.     

<Emphasis Type="Italic">Parapharyngodon hugoi</Emphasis> n. sp., a new nematode (Oxyuroidea: Pharyngodonidae) of the tree frog <Emphasis Type="Italic">Trachycephalus typhonius</Emphasis> (Linnaeus) from the Brazilian Pantanal,including a key to the congeners from amphibians of the American continent

A new nematode Parapharyngodon hugoi n. sp. (Oxyuroidea: Pharyngodonidae) is described parasitising the large intestine of the tree frog Trachycephalus typhonius (Linnaeus) (Anura: Hylidae) from the wetlands of Pantanal, State of Mato Grosso do Sul, Brazil. The new species exhibits a unique structure of the posterior cloacal lip in males, which is supported by a rigid V-shaped structure. Parapharyngodon hylidae parasitic in hylid frogs, including T. typhonius, from Mexico, is the most similar congener to P. hugoi n. sp. but is distinguished from the new species by the presence of a gubernaculum (vs absence), by the lateral alae in males ending far anterior to cloacal opening (vs near to it) and because in gravid females the ovaries encircle the oesophageal corpus. Additionally, the new species differs from its congeners as well as from species of Thelandros Wedl, 1862, a very closely related genus, by the combination of features such as spicule length, number of caudal papillae, morphology of the anterior cloacal lip, which is echinate, and position of ovaries. The geographical distribution of hosts seems to play an important role in the speciation process of Parapharyngodon spp.; however, due the lack of molecular data this issue along with the validity of both Thelandros and Parapharyngodon are still questions to be solved in the future, after improvement of the genetic database. A key to the species of Parapharyngodon parasitic in amphibians from the American continent is provided.     

A morphological and electrophoretic study of Rugopharynx zeta (Johnston & Mawson, 1939) (Nematoda: Strongyloidea), with the description of a new species,R. mawsonae,from the black-striped wallaby Macropus dorsalis (Marsupialia: Macropodidae)

Rugopharynx zeta (Johnston & Mawson) (Nematoda: Strongyloidea) is redescribed from the rock wallabies Petrogale penicillata penicillata, P. p. herberti, P. inornata and P. assimilis from Queensland and New South Wales, Australia. Specimens formerly assigned to this nematode taxon from the wallabies Macropus dorsalis and M. parma are treated as a new species, R. mawsonae. R. mawsonae n. sp. differs from R. zeta in the shape of the dorsal ray, length of spicules, morphology of spicule tip, length of female tail and position of deirid. The morphological differences are supported by electrophoretic data. R. zeta and R. mawsonae n. sp. had fixed genetic differences at 45.0% of the 21 enzyme loci examined, while each differed at 38.1% and 45.0% of loci respectively from the morphologically distinct R. delta (Johnston & Mawson). The known host and geographical distributions of R. zeta and R. mawsonae n. sp. are reviewed.     

Etude morphologique de Austroxyuris finlaysoni (Oxyuridae,Nematoda), parasite de Petauroides volans (Petauridae,Marsupiala)

Résumé Austroxyuris finlaysoni Johnston & Mawson, 1938, un oxyure parasite du caecum et du gros intestin d'un marsupial pétauridé australien, Petauroides volans Kerr, est redécrit à partir d'un matériel nouveau. Les caractéristiques du genre Austroxyuris Johnston & Mawson, 1938 sont ensuite discutées. Ces oxyures pratiquent de manière facultative une forme d'insémination traumatique que l'on peut considérer comme relativement primitive.

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Austroxyuris finlaysoni Johnston & Mawson, 1938, a pinworm parasite of an Australian marsupial, Petauroides volans Kerr, is redescribed. Morphological study of this species reveals: (i) the presence of very specialized oesophageal teeth in both sexes, (ii) the presence of an area rugosa and of a differentiated caudal bursa in the males, and (iii) the presence of a vagina vera modified into a spermatic pouch used during traumatic insemination. The morphological and biological characteristics of the genus Austroxyuris Johnston & Mawson, 1938 are discussed. The members of this genus occasionally use a form of traumatic insemination which can be considered relatively primitive.

     

A new and a rare parasitic copepod from fishes of Kuwait

Summary A new lernaeopodid copepod, Sparidicola papilliferens n.g., n. sp., is described from Acanthopagrus latus (Pisces: Teleostei) taken in Kuwait. This species is designated as a type of its genus, to which is transferred a second species, originally described as Brachiella lithognathae Kensley & Grindley, 1973, renamed Sparidicola lithognathae (Kensley & Grindley 1973) n. comb. A new name, Neobrachiella pillaii nom. nov., is proposed for Brachiella indica Pillai, 1968. The original name is preoccupied by Brachiella indica Tripathi, 1962, which is also transferred to the genus Neobrachiella Kabata, 1979, as N. indica (Tripathi, 1962) n. comb.     

Dactylogyridean monogeneans of the siluriform fishes of the Old World

This is a catalogue and discussion of the known dactylogyridean monogenean genera of siluriform fishes of the Old World. Of a total of 38 nominal genera, only 19 are considered valid. Seventeen of these 19 genera are currently in the Ancyrocephalidae (containing the Ancyrocephalinae and Ancylodiscoidinae), whilst the other two (Neocalceostoma and Neocalceostomoides) are in the Neocalceostomatidae. The 17 genera are Anchylodiscus, Ancylodiscoides, Bagrobdella, Bifurcohaptor, Bychowskyella, Chauhanellus, Cornudiscoides, Hamatopeduncularia, Mizelleus, Paraquadriacanthus, Pseudancylodiscoides, Protoancylodiscoides, Quadriacanthus, Schilbetrema, Schilbetrematoides, Synodontella and Thaparocleidus. Clariotrema Long, 1981 and Neobychowskyella Ma, Wang & Li, 1983 are considered synonyms of Bychowskyella Akhmerov, 1952, Anacornuatus Dubey, Gupta & Agarwal, 1992 is considered a synonym of Quadriacanthus Paperna, 1961, Mizellebychowskia Gupta & Sachdeva, 1990 is considered a synonym of Neocalceostoma Tripathi, 1959 and Hargitrema Tripathi, 1959 is treated as a synonym of Hamatopeduncularia Yamaguti, 1953. It is proposed that the Ancylodiscoidinae be raised to family status within the order Dactylogyridea to accommodate these 17 `ancyrocephalid' genera from siluriforms, together with Malayanodiscoides and Notopterodiscoides from notopterids. A key and the diagnostic characteristics of the 19 recognised dactylogyridean genera from catfishes plus two from notopterids, together with a list of species and synonyms, are included. New combinations made in this work are Thaparocleidus avicularia (Chen, 1987) n. comb., T. calyciflorus (Chen, 1987) n. comb., T. choanovagina (Luo & Lang, 1981) n. comb., T. dissimilis (Chen, 1988) n. comb., T. leiocassis (Reichenbach-Klinke, 1959) n. comb., T. meticulosa (Chen, 1987) n. comb., T. parasoti (Zhao & Ma, 1999) n. comb., T. persculpus (Chen, 1987) n. comb., T. valga (Chen, 1987) n. comb. and T. wulingensis (Yao & Wang, 1997) n. comb. [all from Silurodiscoides] and Bychowskyella glyptothoraci (Ma, Wang & Li, 1983) n. comb. [from Neobychowskyella].     

The taxonomy of Tylenchorhynchinae (Nematoda: Tylenchida) with longitudinal lines and ridges

Summary The taxonomy of those Tylenchorynchinae which have longitudinal lines or ridges on the cuticle is discussed. Dolichorhynchus is restricted to species with four incisures in the lateral field, lateral vulval flaps and a terminally notched bursa. D. prophasmis n. sp. is described. Neodolichorhynchus n. g. is erected for those species previously in Dolichorhynchus which have no lateral vulval flaps and a normal bursa, including: N. microphasmis (Loof, 1959) n.comb., N. judithae (Andrássy, 1962) n.comb., N. sulcatus (de Guiran, 1967) n.comb., and N. gladiolatus (Fortuner & Amougou, 1973) n.comb. Tessellus n.g. is proposed for T. claytoni (Steiner, 1937) n.comb. and T. pachys (Thorne & Malek, 1968) n.comb. the only remaining Tylenchorhynchus species with longitudinal cuticular lines. They are characterized by a rounded non-offset lip region, four incisures in the lateral field and a cuticular annulation divided into prominent blocks by deep longitudinal cuticular lines.     

A phylogenetic analysis and revised classification of the Monocotylidae Taschenberg, 1879 (Monogenea)

The Monocotylidae Taschenberg, 1879 is revised based on a cladistic analysis of relationships between the constituent species and genera. The monophyly of the family is supported by three apomorphic character states: division of the haptor into one central and eight peripheral loculi; the ovary looping the right intestinal caecum; and tetrahedral eggs. The family is divided into six subfamilies: Calicotylinae Monticelli, 1903 (comprising Calicotyle Diesing, 1850, Dictyocotyle Nybelin, 1941); Dasybatotreminae Bychowsky, 1957 (comprising Anoplocotyloides Young, 1967, Dasybatotrema Price, 1938, Timofeevia n. g., Troglocephalus Young, 1967); Decacotylinae n. subfam. (comprising Decacotyle Young, 1967, Papillicotyle Young, 1967); Heterocotylinae n. subfam. (comprising Heterocotyle Scott, 1904, Neoheterocotyle Hargis, 1955, Nonacotyle Ogawa, 1991, Potamotrygonocotyle Mayes, Brooks & Thorson, 1981, Spinuris Doran, 1953); Merizocotylinae Johnston & Tiegs, 1922 (comprising Cathariotrema Johnston & Tiegs, 1922, Empruthotrema Johnston & Tiegs, 1922, Merizocotyle Cerfontaine, 1894, Squalotrema Kearn & Green, 1983, Triloculotrema Kearn, 1993); and Monocotylinae Taschenberg, 1879 (comprising Clemacotyle Young, 1967, Dendromonocotyle Hargis, 1955, Monocotyle Taschenberg, 1878). The Dendromonocotylinae Hargis, 1955 is removed from subfamilial status and the two genera previously assigned to the subfamily are reassigned to the Monocotylinae. Timofeevia is proposed for Timofeevia rajae (Timofeeva, 1983) n. comb. (formerly Dasybatotrema rajae). Mycteronastes Kearn & Beverley-Burton, 1990 and Thaumatocotyle Scott, 1904 are synonymised with Merizocotyle. Gymnocalicotyle Nybelin, 1941 is not considered a distinct taxon. Revised diagnoses and keys for subfamilies and genera of the Monocotylidae are provided.     

Diplectanids infesting the gills of the barramundi Lates calcarifer (Bloch) (Perciformes: Centropomidae), with the proposal of Laticola n. g. (Monogenoidea: Diplectanidae)

Four species of the Monogenoidea, Laticola lingaoensis n. sp., L. latesi (Tripathi, 1957) n. comb. [previously Pseudorhabdosynochus latesi (Tripathi, 1957) Kritsky & Beverley-Burton, 1986], L. paralatesi (Nagibina, 1976) n. comb. [previously Diplectanum paralatesi Nagibina, 1976] and Diplectanum penangi Liang & Leong, 1991, are reported from the gills of Lates calcarifer (Centropomidae) from the South China Sea (new geographical records for L. latesi and D. penangi). Collections from off Bathurst Island, Northern Territory, Australia, represent a new geographic record for L. paralatesi; Chilka Lake, Orissa, India, is established as the type-locality for L. latesi. Laticola n. g. (Diplectanidae) is proposed for species with a spoon-shaped copulatory organ with two to four concentric incomplete ridges in the base. Laticola lingaoensis, the type-species of Laticola, is described, and L. latesi and L. paralatesi are redescribed based on specimens from the South China Sea. Pseudorhabdosynochus monosquamodiscusi Balasuriya & Leong, 1995 and Pseudorhabdosynochus yangjiangenesis Wu & Li, 2005 are considered junior subjective synonyms of L. latesi and L. paralatesi, respectively.     

The Lepocreadiidae (Digenea) of fishes of the north-east Atlantic: review of the genera Opechona Looss, 1907 and Prodistomum Linton, 1910

The genera Opechona Looss and Prodistomum Linton are redefined: the latter is re-established, its diagnostic character being the lack of a uroproct. Pharyngora Lebour and Neopechona Stunkard are considered synonyms of Opechona, and Acanthocolpoides Travassos, Freitas & Bührnheim is considered a synonym of Prodistomum. Opechona bacillaris (Molin) and Prodistomum [originally Distomum] polonii (Molin) n. comb. are described from the NE Atlantic Ocean. Separate revisions with keys to Opechona, Prodistomum and ‘Opechona-like’ species incertae sedis are presented. Opechona is considered to contain: O. bacillaris (type-species), O. alaskensis Ward & Fillingham, O. [originally Neopechona] cablei (Stunkard) n. comb., O. chloroscombri Nahhas & Cable, O. occidentalis Montgomery, O. parvasoma Ching sp. inq., O. pharyngodactyla Manter, O. [originally Distomum] pyriforme (Linton) n. comb. and O. sebastodis (Yamaguti). Prodistomum includes: P. gracile Linton (type-species), P. [originally Opechona] girellae (Yamaguti) n. comb., P. [originally Opechona] hynnodi (Yamaguti) n. comb., P. [originally Opechona] menidiae (Manter) n. comb., P. [originally Pharyngora] orientalis (Layman) n. comb., P. polonii and P. [originally Opechona] waltairensis (Madhavi) n. comb. Some species are considered ‘Opechona-like’ species incertae sedis: O. formiae Oshmarin, O. siddiqii Ahmad, 1986 nec 1984, O. mohsini Ahmad, O. magnatestis Gaevskaya & Kovaleva, O. vinodae Ahmad, O. travassosi Ahmad, ‘Lepidapedon’ nelsoni Gupta & Mehrotra and O. siddiqi Ahmad, 1984 nec 1986. The related genera Cephalolepidapedon Yamaguti and Clavogalea Bray and the synonymies of their constituent species are discussed, and further comments are made on related genera and misplaced species. The new combination Clavogalea [originally Stephanostomum] trachinoti (Fischthal & Thomas) is made. The taxonomy, life-history, host-specificity and zoogeography of the genera are briefly discussed.     

Isthmiophora Lühe, 1909 and Euparyphium Dietz, 1909 (Digenea: Echinostomatidae) re-defined,with comments on their nominal species

The validity of Isthmiophora Lühe, 1909 in relation to Euparyphium Dietz, 1909 is discussed and confirmed. Isthmiophora melis Schrank, 1788) [the type-species] and I. inermis (Fuhrmann, 1904) n. comb. are redescribed, and diagnoses are given for both genera, along with lists of their presently-accepted constituent species which are commented upon where necessary. A similar list of species previously allocated to these genera is also presented with comments on their current status. A key to the species of Isthmiophora is included. New combinations for species previously attributed to Euparyphium are: Isthmiophora inermis (Fuhrmann, 1904) n. comb., I. beaveri (Yamaguti, 1958) n. comb., I. lukjanovi (Chertkova, 1971) n. comb., I. citellicola (Kadenatsii in Skrjabin & Bashkirova, 1956) n. comb., I. hortensis (Asada, 1926) n. comb., Echinostoma pindchi (Khan & Chishti, 1985) n. comb., Echinoparyphium tripathii (Gupta & Gupta, 1982) n. comb., E. hirundonis (Fischthal & Kuntz, 1976) n. comb., and Hypoderaeum longitestis (Verma, 1936) n. comb. Species attributed to Euparyphium which are here considered species inquirendae are: E. lobata Farooq & Yousuf, 1986 sp. inq., E. ochoterenai Cerecero, 1943 sp. inq., E. sobolevi Ryzhikov, 1965 sp. inq., and E. taiwanense Fischthal & Kuntz, 1976 sp. inq.     

Redescription of Mymarilla Westwood,new synonymies under Cremnomymar Ogloblin (Hymenoptera,Mymaridae) and discussion of unusual wings

The monotypic genus Mymarilla Westwood is known only from St. Helena, a remote island in the South Atlantic Ocean. The peculiar species M. wollastoni Westwood (Mymaridae) is redescribed and illustrated from non-type material. Mymarilla is compared with Cremnomymar Ogloblinspp. from the Juan Fernández Islands in the South Pacific Ocean. Stephanodes Enock is shown to be the most likely sister genus to Mymarilla. Nesopolynema Ogloblin, syn. n., Oncomymar Ogloblin, syn. n., Scolopsopteron Ogloblin, syn. n., are placed in synonymy under Cremnomymar and their species transferred as Cremnomymar caudatum (Ogloblin 1952), comb. n., C. dipteron (Ogloblin 1957), comb. n., and C. kuscheli (Ogloblin 1952), comb. n. Wing shape and wing reductions in Mymaridae are discussed in relation to biogeography, particularly with respect island faunas and to four genera, Cremnomymar, Mymarilla, Parapolynema Fidalgo, and Richteria Girault, some or all of whose species have more or less convex fore wings.     

A taxonomic revision of the Nematotaeniidae Lühe, 1910 (Cestoda: Cyclophyllidea)

A taxonomic revision of the Nematotaeniidae, involving the examination of over 400 specimens, was undertaken. Some new taxonomic characters have been introduced to allow distinction of the various species. The family contains 18 recognized species in four genera. The genusNematotaenia Lühe, 1910 contains four species, namelyN. chantalae Dollfus, 1957,N. dispar (Goeze, 1782) Lühe, 1910,N. hylae Hickman, 1960, andN. tarentolae Lopez-Neyra, 1944.N. kashmirensis Fotedar, 1966,N. dollfusi, Yuen & Fernando, 1974 andN. viride Mokhtar-Maamouri & Chakroun, 1984 are considered junior synonyms ofN. dispar. N. aurangabadensis Chincholikar & Shinde, 1975,N. lopezneyrai Soler, 1945 andN. mabuiae Shinde, 1968 are consideredspecies inquirendae: the latter species probably belongs in the genusOochoristica Lühe, 1898 (Anoplocephalidae: Linstowiinae). The genusCylindrotaenia Jewell, 1916 is shown to possess two testes per segment and not one as originally proposed:Baerietta Hsü, 1935 is consequently synonymized withCylindrotaenia. Cylindrotaenia is divided into five species-groups on the basis of adult morphology. The first group contains two American species, namelyC. americana Jewell, 1916 andC. idahoensis (Waitz & Mehra, 1961) n. comb. The second group contains species from Australia and New Zealand, namelyC. allisonae (Schmidt, 1980), n. comb.,C. criniae (Hickman, 1960) n. comb.,C. decidua (Ainsworth, 1985) n. comb.,C. hickmani (Jones, 1985) n. comb. andC. minor (Hickman, 1960) n. comb. A third species group consists ofC. jaegerskioeldi (Janicki, 1926) n. comb.,C. magna n. sp. andC. philauti Crusz & Sanmugasunderam, 1971 and occurs in Africa, Sri Lanka and Japan. The fourth group, apparently restricted to Japan, contains a single species,C. japonica (Yamaguti, 1938) n. comb. The fifth group containsC. montana (Yamaguti, 1954) n. comb. and occurs in Japan and Tibet.C. quadrijugosa Lawler, 1939 is synonymized withC. americana, andBaerietta claviformis Yamaguti, 1954 is synonymized withC. japonica. C. baeri (Hsü, 1935) n. comb.,C. chilensis (Puga & Franjola, 1983) n. comb.,C. diana (Helfer, 1948) Lehmann, 1960,C. malayi (Yuen & Fernando, 1974) n. comb. andC. roonwali Nama, 1972 arespecies inquirendae. The genusDistoichometra, Dickey 1921 contains a single species, namelyD. bufonis Dickey, 1921.D. kozloffi Douglas, 1958 andBaerietta enteraneides (Helfer, 1948) Yamaguti, 1959 are reduced to synonymy withD. bufonis. Bitegmen n. g. is proposed to accomodate a single species,B. gerrhonoti (Telford, 1965) n. comb., which was previously included in the genusBaerietta. The present distribution of the Nematotaeniidae is largely related to that of their anuran hosts. Nematotaeniids probably arose in Gondwanaland.     

Two new species ofOdilia (Nematoda: Heligmonellidae) from Australian rodents,with comments onO. bainae Beveridge & Durette-Desset, 1992

Odilia tasmaniensis n. sp.,O. praeputialis n. sp. andO. bainae Beveridge & Durette-Desset, 1992 from the small intestine of Australian murids are described and illustrated. The two new species are distinguished from the other eight species in the genus, namelyO. mackerrasae (Mawson, 1961),O. brachybursa (Mawson, 1961),O. emanuelae (Mawson, 1961),O. melomyos (Mawson, 1961),O. polyrhabdote (Mawson, 1961),O. uromyos (Mawson, 1961),O. mawsonae (Durette-Desset, 1969) andO. bainae Beveridge & Durette-Desset, 1992.O. tasmaniensis n. sp. fromRattus lutreolus is characterised by the longitudinal cuticular ridges being continuous, the presence of 18 ridges in cross-section in the middle region of the body, the joined distal ends of the spicules forming a curved bluntly rounded tip, a short genital cone with a single ventral papilla and a pair of laterally curving dorsal raylets and the posterior end of the female tapering sharply.O. praeputialis n. sp. fromZyzomys woodwardi is characterised by continuous longitudinal cuticular ridges, the presence of 22–35 ridges in cross-section in the middle of the body, the sharply pointed joined distal tips of the spicules, a complex genital cone with a flat membraneous proconus, a ventral papilla projecting from an extension of the body wall, a pair of short straight dorsal raylets and the presence of a praepuce on the posterior end of the female.O. bainae is characterised by the longitudinal cuticular ridges being continuous, the presence of 17–22 ridges in cross-section in the middle region of the body, the joined distal ends of the spicules surrounded in an oval transparent cap, a long genital cone with a single ventral papilla and a pair of laterally curving dorsal raylets, and the absence of a praepuce on the posterior end of the female.Rattus lutreolus and the pseudomyine rodentsPseudomys higginsi andMastacomys fuscus are new host records for this species.     

Two anisakid nematodes from marine fishes off New Caledonia, including Raphidascaris (Ichthyascaris) nemipteri n. sp. from Nemipterus furcosus

One new and one known species of the ascaridoid family Anisakidae are reported from marine fishes off the southwestern coast of New Caledonia: Raphidascaris (Ichthyascaris) nemipteri n. sp. from the intestine of the forked-tailed threadfin bream Nemipterus furcosus (Nemipteridae, Perciformes) and Hysterothylacium cenaticum (Bruce & Cannon, 1989) from the intestine of the striped marlin Tetrapturus audax (Istiophoridae, Perciformes). R. nemipteri is characterised mainly by the shape (wider than long) of the lips, the length of the spicules (225–399 μm, which represent 2.7–4.2% of the body length), the number (22–33) of caudal pre-anal papillae, the position of the vulva (at 16–20% of the body length), and the presence of cuticular spines on the tip of the female tail. Specimens of H. cenaticum from New Caledonia generally exhibited smaller body measurements than those originally described from Australian waters; the deirids and eggs are described for the first time. Maricostula Bruce & Cannon, 1989 is considered a junior synonym of Hysterothylacium, to which three species are transferred as H. cenaticum (Bruce & Cannon, 1989) n. comb., H. makairi (Bruce & Cannon, 1989) n. comb. and H. tetrapteri (Bruce & Cannon, 1989) n. comb.     

Revision of the genus Diclidophora Krøyer, 1838 (Monogenea: Diclidophoridae), with the proposal of Macrouridophora n. g.

The present study re-examines the detailed morphology of the type-species, Diclidophora merlangi (Kuhn, in Nordmann, 1832) Krøyer, 1838, and other Diclidophora species parasitic on gadid fishes: D. denticulata (Olsson, 1876) Price, 1943, D. esmarkii (Th. Scott, 1901) Sproston, 1946, D. luscae (van Beneden & Hesse, 1863) Price, 1943, D. minor (Olsson, 1868) Sproston, 1946, D. palmata (Leuckart, 1830) Diesing, 1850, D. phycidis (Parona & Perugia, 1889) Sproston, 1946, D. pollachii (van Beneden & Hesse, 1863) Price, 1943 and the recently described D. micromesisti Suriano & Martorelli, 1984. An amended generic diagnosis of Diclidophora Krøyer, 1838 (synonym Diclidophora Diesing, 1850) is provided, which includes the presence of a prostatic vesicle in the terminal male genitalia and the distal fusion of the median and peripheral sclerites, a₁ and c₁ in the clamp anterior jaw. Macrouridophora n. g. is herein proposed for species previously considered in Diclidophora, which are parasitic on macrourid and morid fishes. The clamp morphology in Macrouridophora n. g. has distinct lamellate extension attachments to peripheral sclerites c₁ and the distal portion of d₁, with no distal fusion between a₁ and c₁ in the anterior jaw. Macrouridophora macruri (Brinkmann, 1942) n. comb. is chosen as the type-species. Nine other species are herein transferred to Macrouridophora n. g.: M. coelorhynchi (Robinson, 1961) n. comb., M. lotella (Machida, 1972) n. comb., M. nezumiae (Munroe, Campbell & Zwerner, 1981) n. comb. and M. tubiformis (Rohde & Williams, 1987) n. comb. are redescribed, based on the re-examination of type or voucher specimens. Macrouridophora attenuata (Mamaev & Zubtschenko, 1979) n. comb., M. caudata (Mamaev & Zubtschenko, 1984) n. comb., M. papilio (Mamaev & Avdeev, 1981) n. comb., M. paracoelorhynchi (Mamaev & Paruchin, 1979) n. comb. and M. physiculi (Mamaev & Avdeev, 1981) n. comb. have adequately described haptoral clamps in the literature. The clamp morphology in Macrouridophora sp. from Lepidorhynchus denticulatus in Australia is also considered. Diclidophora whitsonii Suriano & Martorelli, 1984 is herein transferred to the genus Macruricotyle Mamaev & Ljadov, 1975, as M. whitsonii (Suriano & Martorelli, 1984) n. comb. D. embiotocae Hanson, 1979 is herein considered a species incertae sedis. D. caudospina Khan & Karyakarte, 1983 and D. paddiforma Deo & Karyakarte, 1979 are herein considered species inquirendae. D. aglandulosa Deo, 1977, D. glandulosa Das, 1972, D. minuta Das, 1972 and D. spindale Deo, 1977 are formally dismissed as nomina nuda. The systematic position of Diclidophora Krøyer, 1838 and Macrouridophora n. g. in the subfamily Diclidophorinae Cerfontaine, 1895 (sensu Mamaev, 1976) is discussed.     

The status of Acleotrema Johnston & Tiegs, 1922 and Heteroplectanum Rakotofiringa, Oliver & Lambert, 1987 (Monogenoidea: Diplectanidae), with the redescription of Acleotrema girellae Johnston & Tiegs, 1922

Acleotrema Johnston & Tiegs, 1922 is resurrected and its diagnosis amended. A. girellae Johnston & Tiegs, 1922 is redescribed based on the lectotype from the Australian Museum (Sydney, Australia). A. kyphosi Yamaguti, 1968 is considered a junior synonym of A. girellae. Heteroplectanum Rakotofiringa, Oliver & Lambert, 1987 is considered a junior synonym of Acleotrema. The nine species of the latter genus are transferred to Acleotrema as: A. diplobulbus (Yamaguti, 1968) n. comb., A. nenue (Yamaguti, 1968) n. comb., A. spiculare (Yamaguti, 1968) n. comb., A. yamagutii (Oliver, 1983) n. comb., A. nenuoides (Rakotofiringa, Oliver & Lambert, 1987) n. comb., A. parastromatei (Rakotofiringa, Oliver & Lambert, 1987) n. comb., A. serrulopenis (Rakotofiringa, Oliver & Lambert, 1987) n. comb., A. tamatavense (Rakotofiringa, Oliver & Lambert, 1987) n. comb. and A. oliveri (León-Règagnon, Pérez-Ponce de León & Garcia- Prieto, 1997) n. comb. An historical account of the species of Acleotrema is presented.     

Bucephaline digeneans (Bucephalidae) in <Emphasis Type="Italic">Sphyraena putnamae</Emphasis> Jordan &; Seale (Sphyraenidae) from the lagoon off New Caledonia

Lethrinitrema gibbus n. g., n. sp. and L. dossenus n. sp. are described from the fish Lethrinus rubrioperculatus Sato collected off New Caledonia, South Pacific. Members of Lethrinitrema n. g. (Ancyrocephalidae) are characterised by having two pyriform haptoral reservoirs and ventral anchors with lateral grooves. The elongate tubular distal end of each reservoir bifurcates, draining into a superficial lateral groove on each side of the ventral anchors. The haptoral reservoirs are postulated to store secretory products which assist in attachment to the host. Lethrinitrema spp. also possess tandem gonads, a male copulatory organ without an accessory piece or with thinly sclerotised accessory piece, and a dextrolateral, non-sclerotised vaginal bulb. The two new species have small, poorly demarcated haptors with small haptoral armament and a crown-like piece on the tip of the inner root of the ventral anchors. They differ from each other in the shape and size of the ventral bar and male copulatory organ (40–45 μm in length in L. gibbus vs 24–30 μm in L. dossenus). Three other species, previously included in Haliotrema Johnston & Tiegs, 1922, are transferred to Lethrinitrema, i.e. L. chrysostomi (Young, 1968) n. comb., L. fleti (Young, 1968) n. comb. (both briefly redescribed from paratypes) and L. lethrini (Yamaguti, 1937) n. comb. All species of Lethrinitrema parasitise Lethrinus spp. (Lethrinidae), and there is evidence for the existence of further Lethrinitrema spp. on Lethrinus spp. in the Indo-Pacific region.     

Description de Syphabulea mascomai n. sp. et analyse du genre Syphabulea

Syphabulea mascomai n. sp., parasite de Sciurus vulgaris (L.) en Espagne, est décrite. S. mascomai se distingue des autres espèces du genre par: (i) la grande taille de ses oeufs; (ii) la taille relativement réduite de l'opercule de ces oeufs; (iii) par les particularités de l'ornementation du crochet accessoire au gubernaculum. La systématique et la répartition géographique des espèces du genre Syphabulea Gubanov, 1964 sont discutées. L'espèce type du genre est Syphabulea tjanschani (Ablasov, 1962) n. comb. [= Syphacia sp. d'Ablasov in Skrjabin et al. (1960); =Syphacia tjanschani Ablasov, 1962; =S. toschevi Petrov & Bayanov, 1962; =S. thompsoni sensu Li (1933); =S. thompsoni sensu Gubanov (1964); = Syphabulea sobolevi Gubanov, 1964]. Le genre Syphabulea n'était jusqu'ici connu que dans le région orientale, la région néarctique, et l'Est de la région paléarctique. La découverte d'un nouveau Syphabulea dans la péninsule ibérique, dont la faune parasitaire présente des caractères endémiques et relictuels, montre que la présence de ce genre dans la région paléarctique est probablement ancienne. Le genre Syphabulea est sympatrique du genre Rodentoxyuris Quentin & Tenora, 1975, lui aussi spécifique de Rongeurs Sciuroidea, dans une partie importante de la région holarctique. Syphabulea mascomai n. sp., parasitic in the caecum and large intestine of Sciurus vulgaris (L.) in Spain, is described. S. mascomai is characterised by: (i) its very large eggs; (ii) a shorter operculum on the eggs; and (iii) by the peculiar shape of the ornamentation of the accessory piece of gubernaculum. The systematics and the zoogeographical range of the genus Syphabulea Gubanov, 1964 are discussed. The type-species of the genus is: Syphabulea tjanschani (Ablasov, 1962) n. comb. [=Syphacia sp. of Ablasov in Skrjabin et al. (1960); =Syphacia tjanschani Ablasov, 1962; =S. toschevi Petrov & Bayanov, 1962, = S. thompsoni sensu Li (1933); =S. thompsoni sensu Gubanov (1964); =Syphabulea sobolevi Gubanov, 1964]. Until now the genus Syphabulea was known only from the Oriental region, from the Nearctic region and from the asiatic part of the Palearctic region. The discovery of a new species from Spain, an area in which the parasitological fauna exhibits endemic and relictual characteristics, indicates that this genus has probably been present in this part of Europe for quite a long time. The zoogeographical range of genus Syphabulea involves most of the Holarctic region, where it is sympatric with Rodentoxyuris Quentin & Tenora, 1975, another genus parasitic in the Sciuroidea.Se describe a Syphabulea mascomai n. sp. como parásito de Sciurus vulgaris (L.) en España. S. mascomai se distingue de las otras especies del género por: (i) el gran tamaño del los huevos; (ii) el tamaño, relavitamente reducido, del operculo de los huevos; (iii) las características de la ornemantación del gancho accesorio del gubernáculo. Se discute la sistemática y la repartición geográfica de las especies del género Syphabulea Gubanov, 1964. La especie tipo es: Syphabulea tjanschani (Ablasov, 1962) n. comb. [= Syphacia sp. del Ablasov in Skrjabin et al. (1960); =Syphacia tjanschani Ablasov, 1962; =S. toschevi Petrov & Bayanov, 1962; =S. thompsoni sensu Li (1933); =S. thompsoni sensu Gubanov (1964); = Syphabulea sobolevi Gubanov, 1964]. Hasta el presente se tenían datos del género Syphabulea en la Región Oriental, la Región Neártica y en el este de la Región Paleártica. El hallazgo de Syphabulea en la Península Ibérica, donde las parasitofaunas presentan características endémicas y relictuales, viene a sugerir que la presencia del género en la Región Paleártica es muy antigua. El género Syphabulea es simpátrico del género Rodentoxyuris Quentin & Tenora, 1975, tambien específico de Roedores Sciuroidea en la mayor parte de la Región Holártica.