1 - 9 of 9
Number of results to display per page
Search Results
2. A redescription of Arostrilepis horrida (Linstow, 1901) and descriptions of two new species from Palaearctic microtine rodents, Arostrilepis macrocirrosa sp. n. and A. tenuicirrosa sp. n. (Cestoda: Hymenolepididae)
- Creator:
- Makarikov, Arseny A., Gulyaev, Vladimir D., and Kontrimavichus, Vytautas L.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Cestoda, Hymenolepididae, Arostrilepis horrida, redescription, Arostrilepis macrocirrosa, Arostrilepis tenuicirrosa, new species, morphology, and microtine rodents
- Language:
- English
- Description:
- The type species of the cestode genus Arostrilepis Mas-Coma et Tenora, 1997, Arostrilepis horrida (Linstow, 1901), is redescribed on the basis of the syntype material from the brown rat (Rattus norvegicus) deposited in the collection of the Museum für Naturkunde, Berlin. Arostrilepis horrida (sensu lato), reported from a wide range of rodents throughout the Holarctic Region, is shown to be a species complex. The proposed host range and geographical distribution of A. horrida (sensu stricto) are limited to the data reported in the original description. The previously proposed synonymy of A. horrida is examined and the following species are excluded from the list of its synonyms: Hymenolepis procera Janicki, 1904, H. arvicolina Cholodkowsky, 1913, H. sciurina Cholodkowsky, 1913 and H. mathevossianae Akhumyan, 1946; these are considered species inquirendae. Specimens previously identified as A. horrida from voles from the Asian part of Russia are revised and newly collected materials are worked out. Two new species, A. macrocirrosa sp. n. and A. tenuicirrosa sp. n., are described. The main differentiating characters used to distinguish Arostrilepis spp. are the form and size of cirrus and its armature as well as the type of arrangement for the testes. The new species can also be distinguished from one another on the basis of sequences of the ITS2 rRNA gene. The generic diagnosis of Arostrilepis is emended. Hymenolepis neurotrichi Rausch, 1962, which had been placed in Arostrilepis by Mas-Coma and Tenora (1997), does not correspond to the generic diagnosis and is considered a species incertae sedis.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
3. A redescription of the adult male and praniza of Gnathia africana Barnard, 1914 (Crustacea, Isopoda, Gnathiidae) from southern Africa
- Creator:
- Smit, Nico J., Van As, Jo G. , and Basson, Linda
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Gnathia africana, redescription, taxonomy, and morphology
- Language:
- English
- Description:
- A redescription of the adult male and praniza of Gnathia africana Barnard, 1914 is provided from material collected at three localities along the South African coast and from syntypes and other material deposited by the original author. This redescription is based on light and scanning electron microscopy.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
4. A redescription of the adult male of Caecognathia cryptopais (Barnard, 1925) (Crustacea: Isopoda: Gnathiidae) from southern Africa
- Creator:
- Smit, Nico J., Basson, Linda, and Van As, Jo G.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Caecognathia cryptopais, redescription, taxonomy, and morphology
- Language:
- English
- Description:
- A redescription of the adult male of Caecognathia cryptopais (Barnard, 1925) is provided from syntypes and other material deposited in the South African Museum. The generic status of Caecognathia cryptopais is also revised. This redescriplion is based on light and scanning electron microscopy.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
5. Redescription of cystacanths of Corynosoma pseudohamanni Zdzitowiecki, 1984 (Acanthocephala: Polymorphidae) from paratenic fish hosts
- Creator:
- Mašová, Šárka and Baruš, Vlastimil
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Acanthocephala, Corynosoma pseudohamanni, redescription, morphology, James Ross Island, and Antarctica
- Language:
- English
- Description:
- Cystacanths of Corynosoma pseudohamanni Zdzitowiecki, 1984 (Palaeacanthocephala: Polymorphidae) are redescribed on the basis of specimens recovered from three species of Antarctic notothenioid fish, Trematomus bernacchii Boulenger, Gobionotothen gibberifrons (Lönnberg) and Notothenia coriiceps Richardson, collected from the Prince Gustav Channel, Antarctica. The cystacanths' morphometry and their internal anatomy including trunk muscles were studied using light and scanning electron microscopy (SEM). The characteristic features of this species such as the length of proboscis and the number of hooks (i.e. 260 hooks arranged in 20 rows with 13 hooks each, including two basal hooks) were confirmed and the intraspecific variability was evaluated. Sexual dimorphism was manifested in the shape of the hindtrunk, and the distribution and extent of the somatic armature only. SEM observations of internal anatomy revealed the detailed organization of trunk musculature.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
6. Redescription of Eubothrium fragile (Rudolphi, 1802) and E. rugosum (Batsch, 1786) (Cestoda: Pseudophyllidea), parasites of fish in the Holarctic Region
- Creator:
- Kuchta, Roman, Hanzelová, Vladimíra, Shinn, Andy P., Poddubnaya, Larisa G., and Scholz, Tomáš
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Eubothrium fragile, Eubothrium rugosum, redescription, fish cestodes, Lota lota, Alosa fallax, and morphology
- Language:
- English
- Description:
- Two fish cestodes, the little-known Eubothrium fragile (Rudolphi, 1802) and E. rugosum (Batsch, 1786), the type species of the genus Eubothrium Nybelin, 1922, are redescribed on the basis of new material from twaite shad, Alosa fallax (Lacépède, 1803), from England and burbot, Lota lota (Linnaeus, 1758), from Russia, respectively. The tapeworms are compared with two other species of the genus, E. crassum (Bloch, 1779) and E. salvelini (Schrank, 1790), common parasites of salmonid fish in the Holarctic. The most notable differential characters are the size and the shape of the scolex (smaller and oval in E. fragile), the shape of the apical disc (four or more indentations in E. crassum), the number and size of the testes (the largest and least numerous in E. rugosum), and the position and size of the vitelline follicles (almost entirely cortical in distribution in E. fragile and E. crassum versus largely medullary in E. rugosum and E. salvelini). A comparison of species has also shown the morphological similarity of the freshwater species (E. rugosum and E. salvelini) on one hand and those of marine origin, E. fragile and E. crassum, on the other, with the latter species occurring also in fresh waters. A key to the identification of the species studied is also provided.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
7. Redescription of the female of Gnathia africana (Crustacea: Isopoda: Gnathiidae) from southern Africa
- Creator:
- Smit, Nico J., Van As, Jo G., and Basson, Linda
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Gnathiidae, Gnathia africana, female, redescription, taxonomy, and morphology
- Language:
- English
- Description:
- A redescription of the female of the temporary fish parasite, Gnathia africana Barnard, 1914 is provided from specimens reared from final-stage G. africana praniza larvae collected from their intertidal fish hosts along the south coast of southern Africa. It differs from other known gnathiid females in the shape of the frontal border and the number and basic form of pylopod articles. This redescription aims to establish a format for future descriptions and redescriptions of gnathiid females.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
8. Rediscovery, redescription and reclassification of Beludzhia phylloteliptera (Diptera: Sarcophagidae: Miltogramminae)
- Creator:
- Szpila, Krzysztof and Pape, Thomas
- Type:
- article, model:article, and TEXT
- Subject:
- Sarcophagidae, Miltogramminae, redescription, systematics, larva, adult, morphology, SEM, Beludzhia, Dolichotachina, and Phylloteles
- Language:
- English
- Description:
- The species Beludzhia phylloteliptera Rohdendorf is redescribed from adult males and females as well as all larval instars collected in the United Arab Emirates. The morphology of the first instar larva is strikingly similar to that of Dolichotachina marginella (Wiedemann) and Phylloteles pictipennis Loew, all of which are here documented for the first time. These three generic representatives share several character states, which are probably plesiomorphic relative to the condition observed in other miltogrammine larvae, but the uniquely shaped, slender mouthhook, a cushion- or pad-like lobe behind the maxillary palpus (cheek organ), the antero-ventral segmental prolegs of the first instar larva, and the integumental warts of the third instar larvae, are shared character states not known from any other species of Sarcophagidae. Beludzhia Rohdendorf is therefore placed with Dolichotachina Villeneuve and Phylloteles Loew in the tribe Phyllotelini.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
9. Subulura halli (Ascaridida: Subuluridae) from the endangered great bustard Otis tarda Linnaeus (Aves: Gruiformes) in China
- Creator:
- Du, Li-Qiang, Xu, Zhen, Li, Shun-Cai, and Li, Liang
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Nematoda, redescription, morphology, taxonomy, scanning electron microscopy, Otididae, endangered birds, and Palaearctic Region
- Language:
- English
- Description:
- Subulurid nematodes identified as Subulura halli Barreto, 1918 were collected from the endangered bird Otis tarda Linnaeus (Gruiformes: Otididae) in China. A detailed redescription of the hitherto poorly known species is presented using both light and, for the first time, scanning electron microscopy. Previously unreported and erroneous morphological features of taxonomic significance are revealed. This species can be readily distinguished from its congeners by the relatively long oesophagus (1.47-1.92 mm long, representing 10.6-16.9% of body length), the number and arrangement of male caudal papillae (11 pairs in total, arranged as five pairs of precloacal and six pairs of postcloacal papillae), the equal length of spicules (1.35-1.52 mm long, representing 10.7-13.7% of body length) and the presence of a small medioventral, precloacal papilla in the male.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public