Metacercariae of new trematode species of the genus Diplostomum (Trematoda,Diplostomidae) from fishes of Lake Tana,Ethiopia

Four new species of trematodes of the genus Diplostomum are described from metacercariae found in fishes from Lake Tana in Ethiopia: Diplostomum garrae sp. n. from the lens of Garra dembecha, D. longicollis sp. n. from the lens of Barbus humilis, D. montanum sp. n. from the lens of Barbus humilis, and D. tilapiae sp. n. from the vitreous body of Oreochromis niloticus. The metacercariae of the new species considerably differ in morphology and size from those of all known Holarctic species. It is the first African record of metacercariae of the genus Diplostomum in fish.     

Primulina elegans (Gesneriaceae), a new species from North Vietnam

Primulina elegans (Gesneriaceae), a new species from Vietnam is described. This species is similar to P. gemella and P. diffusa in having stolons and papillose-hispid leaves, but is easily distinguished from them by having 9–15 cymes and corollas with two brown stripes on the adaxial lip and nine purplish lines on the abaxial lip. Furthermore, Primulina elegans differs from P. gemmella by its broadly infundibuliform corollas with purplish glandular pubescent filaments, and from P. diffusa by having three slightly purplish glandular pubescent staminodes.     

A new genus and a new species of the planthopper tribe Eucarpiini (Homoptera,Cixiidae) from Southern Vietnam

A new genus, Pterolophus gen. n., was erected for the single species P. anichkini sp. n. from southern Vietnam. The new genus belongs to the tribe Eucarpiini and differs in a characteristic position of the wings at rest: they are obliquely raised over the abdomen and their inner (= ventral) surfaces are in contact.     

A new lumbriculid genus and species from North America (Clitellata,Lumbriculidae)

Secubelmis limpida n. sp., n. gen., is described from Montana, U.S.A. The monotypic genus resembles the lumbriculid genera Rhynchelmis and Tatriella in having atria in X, spermathecae in VIII, and semi-prosoporous male ducts. It differs from Tatriella in having paired atria and spermathecae, and from Rhynchelmis in having petiolate atria. The single prostate gland is unique within the Lumbriculidae. The new species appears to have a restricted range in the northern Rocky Mountains.     

A new oribatid mite species of the genus Sphaerozetes (Acari,Ceratozetidae) from Vietnam

A new oribatid mite species, Sphaerozetes bugiamapensis sp. n., is described from the Bu Gia Map National Park (Vietnam). The genus Sphaerozetes is recorded from Vietnam for the first time.     

A new species of Metacyclops from a hyporheic habitat in North Vietnam (Crustacea,Copepoda, Cyclopidae)

A new species of Metacyclops is described from hyporheic waters and small rock depression with leaf litter in North Vietnam, the Tam Đao Mountains). Metacyclops amicitiae sp. n. can be distinguished from its congeners by the unique combination of the following characters: 12-segmented antennule, distal segment of P4 endopodite bearing a single apical spine, and the surface ornamentation of the intercoxal sclerites in P1–P4 (pilose on the distal margin of P1-P4 and spinulose on the caudal surface of P4). The latter character separates the new Metacyclops from its closest relative, Metacyclops ryukyuensis, known only from the Ryukyu Islands (Ishigaki). The genus Metacyclops with the new species described herein is also for the first time recorded from Vietnam. An identification key is provided to the south and east Asian species of the genus.     

One new species of the genus Belisana Thorell, 1898 (Araneae,Pholcidae) from northern Vietnam

One new species Belisanadenticulatasp. n. (♂) is reported from northern Vietnam based on material collected by fogging the forest canopy. This species resembles Belisanascharffi Huber, 2005, but can be distinguished by relatively long distance between proximal parts of proximo-lateral apophysis and distal apophysis on male chelicerae, by presence of a nearly saddle-shaped prolateral sclerite on procursus, and by different shape of retrolateral membranous flap on procursus. Type specimens are deposited in the Vietnam Academy of Science and Technology in Hanoi.     

Six new species of the genus Dicranosepsis Duda (Diptera, Sepsidae) from Vietnam, with a revised key to the species

The flies of the genus Dicranosepsis from Vietnam were investigated and classified taxonomically. Six new species (D. longa sp. nov., D. kurahashii sp. nov., D. monoseta sp. nov., D. sinuosa sp. nov., D. barbata sp. nov., and D. vietnamensis sp. nov.) are described and illustrated. Dicranosepsis is redefined and a revised key to the species is also provided.     

Chimonocalamus bidoupensis,a new temperate bamboo species (Poaceae: Bambusoideae) from Bidoup National Park,southern Vietnam

A new temperate wood bamboo endemic to Vietnam is described and illustrated as Chimonocalamus bidoupensis N.H.Nghia & V.T.Tran. The new species is similar to C. baviensis in general appearance, but differs by its densely ciliate culms, culm sheaths that are concave at the apex with dense, white hairs on the abaxial surface of the sheath, and perfect florets 7–8 mm long.     

A new species of the genus Leptolalax(Anura:Megophryidae) from southern Vietnam

We describe a new species of megophryid frog from Phu Yen Province in southern Vietnam. Leptolalax macrops sp. nov. is distinguished from its congeners by a combination of the following morphological attributes:(1) body size medium(SVL 28.0–29.3 mm in three adult males, 30.3 mm in single adult female);(2) supra-axillary glands present, creamy white; ventrolateral glands indistinct;(3) tympanum externally distinct;(4) dorsal skin roughly granular with larger tubercles, dermal ridges on dorsum absent;(5) rudimentary webbing present between fingers Ⅰ–Ⅱ and Ⅱ–Ⅲ; rudimentary webbing between all toes; fingers and toes without dermal fringes;(6) in life ventral surface greyish-violet with white speckling;(7) supratympanic fold distinct, dark brown in life;(8) iris bicolored, typically golden in upper half, fading to golden green in lower half;(9) tibia short(TbL/SVL 0.44–0.45 in males); and(10) eyes large and protuberant(ED/SVL 0.15–0.16 in males).From all congeners for which comparable sequences are available, the new species differs markedly in the 16 S rRNA mitochondrial gene sequence(P-distance5.7%). The new species is currently known only from montane evergreen tropical forests of Song Hinh District, Phu Yen Province, and M'Drak District of Dak Lak Province at elevations of 470–630 m a.s.l.. We suggest the new species should be considered as Data Deficient following the IUCN's Red List categories. We also report a previously unknown Leptolalax mt DNA lineage from an evergreen tropical forest in the Hoa Thinh District of Phu Yen Province,which may also represent an undescribed species.     

Aschistanthera, a monotypic new genus for Vietnam (Melastomataceae)

The new genus Aschistanthera and its only species, Aschistanthera cristanthera , are described. Characteristics additional to the diagnosis are emphasized and parts of flowers and fruits and its distribution are illustrated.     

Two new species of fishes from families Muraenidae (Anguilliformes) and Mugiloididae (Perciformes) from the Waters of Vietnam

New species of the genera Gymnothorax (fam. Muraenidae) and Parapercis (fam. Mugiloididae) are described from coastal waters of central Vietnam. G. emmae sp. n. is a common species all along the coast from the Van Phong Bay to the Phan Thiet Bay and differs from other species of this genus in characters of coloration, dentition, and the vertebral formula. P. bicoloripes sp. n. is common in the Phan Thiet Bay and is also know from one specimen from the Nha Trang Bay; from other species of the genus, it differs in coloration and meristic characters.     

Two new species of rhabdochonids (Nematoda: Rhabdochonidae) from freshwater fishes in Mexico, with a description of a new genus

Two new nematode species, Beaninema nayaritense n. gen., n. sp. and Rhabdochona xiphophori n. sp., are described on the basis of the specimens recovered from the gall bladder and intestine of 2 fishes, Cichlasoma beani (Jordan) (Cichlidae, Perciformes) and Xiphophorus sp. (Poeciliidae, Cyprinodontiformes), respectively, from Mexico. The monotypic genus Beaninema differs from other rhabdochonid genera mainly in the presence of large conical teeth in the middle of the prostom. Rhabdochona xiphophori is characterized mainly by a unique structure of the prostom (presence of 6 anterior teeth; dorsal and ventral teeth unusually broad, with 2 lateral horns) and the shape of the deirids (bifurcated, with markedly long base).     

Species affiliation of metacercaria of the genus Metorchis (Trematoda, Opisthorchidae) from fishes in Western Siberia

Two larval species of the genus Metorchis, M. bilis and M. xanthosomus, are reported from fishes of West Siberia. Larvae of the first species can develop into adult forms in birds (terns, gulls, ducks) and in mammals (cats, golden hamsters, white mice). Larvae of the second species developed only in ducks. Experimental infection of golden hamsters, white mice and black terns with M. xanthosomus failed. On the results of the experimental infection and literary data the synonyms, M. bilis and M. xanthosomus, are given.     

A new genus and two new species of gobiid fishes (Perciformes) from the Chagos Archipelago,Central Indian Ocean

Synopsis A recent (1979) expedition to the Chagos Archipelago resulted in the collection of about 40 new taxa of fishes. A new genus,Trimmatom, and two new species,T. nanus andT. offucius, are described here. The new genus is characterized by having all pelvic-fin rays simple (unbranched), a scaleless body, no head pores, a wide gill opening extending anteroventrally to below the eye, and hypurals 1 and 2 fused to the complex formed by the fusion of the ural centrum and hypurals 3 and 4.T. nanuss andT. offucius are differentiated on the basis of fin ray counts and colour pattern.T. nanus is the smallest vertebrate yet to be described. Mature females with ovaries full of eggs are 8–10 mm in standard length.     

Notes on planthoppers of the tribe Hemisphaeriini (Homoptera, Fulgoroidea, Issidae) from Vietnam with a description of a new genus and a new species

A new genus and a new species of the tribe Hemisphaeriini Melichar of the family Issidae Spinola are described from Northern Vietnam. Lectotype of Hemisphaerius interclusus Noualhier, 1896 is designated. New data on the distribution and ecology of H. interclusus and H. hippocrepis Constant et Pham, 2011 in Southern Vietnam are provided.     

中国水生跳虫新种及新记录种记述 (弹尾目)

自Uchida(1948)从山西东冶县发现中国第1种水生Podura aquatica Linnaeus, 1785以来,中国弹尾目水生种类再未见报道。该文记述了采自上海植物园水塘静水表面的弹尾目5新种,水生原Podura aquatica, 尹氏球角Hypogastrura yinae sp. Nov., 沼生陷等Isotomurus palustris, 水生握角圆Sminthurides aquaticus 及刺拟勃氏圆Pseudobourletiella spinata。 其中水生握角圆和刺拟勃氏圆为中国新记录种,尹氏球角为新种。新种的模式标本及观察的其它种的标本存放在中国科学院上海昆虫研究所标本馆。     

On the Brazilian species of halipegine genera (Trematoda: Derogenidae) from fishes,with new morphological data,hosts and synonyms

The genus Genarchella Travassos, Artigas & Pereira, 1928 is reinstated for some species from South American fishes previously attributed to Halipegus Looss, 1899. Aspects of the morphology of G. genarchella Travassos, Artigas & Pereira, 1928 and G. parva Travassos, Artigas & Pereira, 1928 are redescribed. Astyanax bimaculatus, Moenkhausia doceana, Oligosarcus robustus and Salminus maxillosus are recorded as new hosts of G. parva, and H. cryptorchis Mané-Garzon & Gascón, 1973 and H. szidati Yamaguti, 1971 [= G. tropica of Szidat (1954)] are listed amongst new synonyms of this species. Aspects of the morphology of Thometrema magnifica (Szidat, 1954) and T. overstreeti (Brooks, Mayes & Thorson, 1979) are redescribed. T. rioplatense Lunaschi, 1989 is considered a synonym of T. overstreeti. New host-records of T. overstreeti are Pimelodus maculatus and Rhamdia sp. G. genarchella of Hamann (1986) is considered as synonym of T. overstreeti. Paravitellotrema Watson, 1976, Caballeroiella Lamothe-Argumedo, 1977 and Quadripaludus Jimenez, Guajardo & Briseno, 1981 are considered synonyms of Genarchella. The features distinguishing Halipegus, Genarchella and Thometrema Amato, 1968 are discussed.