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| Registros recuperados: 92 | |
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| Horst, R.. |
| Deze worm, het eerst waargenomen in den mond van de Thames, de Liffey en andere rivieren in Engeland, werd door dr. G. Romijn op verschillende plaatsen in N. Holland verzameld: in het Noordhollandsch kanaal bij Schoorldam en in kanaal P. (een verbindingskanaal tusschen het Noordzee-kanaal en de Haarlemmer ringvaart). Terwijl de exemplaren van Engeland 4 à 6 mm. lang worden, bereiken de onze slechts een lengte van 2 mm. Het zijn primitieve Sabelliden (Fam. Amphicorinidae) met 5 onvertakte kieuwen aan weerszijde, waarvan alleen de middelste een bloedvat vertoonen. Zij bestaan uit 12 segmenten: 1 borstelloos kopsegment met een paar oogen, 8 thoracaal segmenten en 3 abdominaal segmenten. De haakvormige borstels van thoracaal en abdominaal segmenten verschillen... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1921 |
URL: http://www.repository.naturalis.nl/record/319317 |
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| Land, J. van der. |
| INTRODUCTION Flatworms living as commensals on parasitic copepods from marine fishes were known already as- early as 1835, when Johnston described Udonella caligorum from Caligus spec., a parasite of Hippoglossus hippoglossus (L.). Since then a number of similar genera and species have been described, but none of these is clearly different from Udonella caligorum, as far as can be judged from the descriptions. Therefore only one valid species is recognized by most modern authors (Price, 1938; Sproston, 1946; Ivanov, 1952b). Calinella ophiodontis Kay, 1945, a species not listed by these authors, probably is another synonym to be added to the long list, but Kay's material should be re-examined before a final decision can be made. In Yamaguti's compilation... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1967 |
URL: http://www.repository.naturalis.nl/record/318129 |
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| Delgado Blas, V.H.. |
| Five Scolelepis species from the Gulf of Mexico and Western Atlantic Ocean are reported and certain species previously synonymized with Scolelepis (S.) squamata are revised. Four species are reinstated: S. (S.) goodbodyi (Jones, 1962), S. (S.) minuta (Treadwell, 1939), S. (S.) acuta (Treadwell, 1914), and S. (S.) agilis (Verrill, 1873); and two are described as new: S. (S.) lighti n. sp., and S. (S.) vossae n. sp. Scolelepis (Scolelepis) goodbodyi (Jones, 1962) n. comb., S. (S.) minuta (Treadwell, 1939) n. comb., S. (S.) acuta (Treadwell, 1914), and S. (S.) agilis (Verrill, 1873) are removed from synonymy with S. (S.) squamata Müller, 1806. The record of Scolelepis (P.) texana Foster, 1971 from the Grand Caribbean region is confirmed. A key to all... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Systematics; Morphology; Spionidae; Scolelepis; Gulf of Mexico; 42.76. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/210770 |
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| Horst, R.. |
| Lycastis meraukensis n. sp. Dr. J. W. R. Koch, member of the New-Guinea expedition of the Kon. Nederl. Aardrijkskundig Genootschap in 1904, found at Merauke in decayed wood of the Sago-palm 9 specimens of this worm, viz. 2 large ones, one of which is incomplete and 7 smaller ones. Unfortunately it is not mentioned whether the tree was met with in fresh or brackish water of the river or in salt water at the sea-shore. The dorsal side of some of the worms is dark flesh-coloured, whereas a red brown ring occurs around the anal segment. The largest specimen measures about 150 mm. in length and has a breadth of 7 mm. in the median body-region (without the parapodia); the number of its segments amounts to 170. One of the smaller specimens has a length of 60 mm.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1918 |
URL: http://www.repository.naturalis.nl/record/319388 |
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| Lax, P.; Rondan Dueñas, J.C.; Franco-Ponce, J.; Gardenal, C.N.; Doucet, M.E.. |
| Potato cyst nematodes, G. rostochiensis and G. pallida, are the most economically important nematode pests of potatoes worldwide and are subject to strict quarantine regulations in many countries. Globodera ellingtonae was recently described from Oregon (USA), with its host-plant in the field being still unknown. Roots of Andean potatoes from the North of Argentina have been found attacked by this nematode, providing further evidence that this is a potato cyst nematode species, along with G. pallida and G. rostochiensis. New information about morphological, biological and molecular aspects of G. ellingtonae is provided for diagnostic purposes. The Argentine population showed morphological differences from specimens from Oregon; therefore, new diagnostic... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Andean potato; Argentina; Diagnosis; Hsp90 gene; Morphology; Potato cyst nematode; 42.76; 42.64. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/506790 |
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| Righi, G.. |
| The genus Meroscolex Černosvitov, 1934, comprised only two species: M. guianicus Černosvitov and M. longissimus Černosvitov, both known only from French Guiana (Černosvitov, 1934: 56; 1935: 29). A third species, from Suriname, is described in the present paper. Meroscolex hoogmoedi n. sp. Material: Suriname, valley of Coeroeni River, approximately 3°2o'N 57°2o'W, leg. Dienst Bodemkartering Suriname, 24/25 June 1967 (2 clitellate specimens: holotype, coll. no. 5946, paratype, coll. no. 5947). — Suriname, Post Tigrie, New River, 3°2o'N 57°3o'W, leg. M.S. Hoogmoed, 28/29 June 1968 (5 clitellate specimens, 4 without posterior end, and 1 large aclitellate specimen, coll. no. 6055). Material in Rijksmuseum van Natuurlijke Historie, Leiden. The type specimens... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1969 |
URL: http://www.repository.naturalis.nl/record/318993 |
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| Loof, P.A.A.. |
| CONTENTS Introduction .................. 3 List of samples with species found............. 4 Some ecological remarks............... 5 Systematic part.................. 7 Subclass Secernentes ............... 7 Panagrolaimidae................ 7 Subclass Adenophori ............... 8 Plectidae.................. 8 Leptolaimidae................. 12 Monhysteridae................. 12 Alaimidae.................. 13 Oncholaimidae................. 13 Tripylidae.................. 15 Onchulidae.................. 20 Ironidae .................. 22 Mononchidae................. 22 Mononchulidae................. 23 Bathyodontidae ................ 24 Dorylaimidae................. 24 Nygolaimidae...... ............ 38 Aporcelaimidae ...... .......... 38 Belondiridae ......... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/317708 |
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| Horst, R.. |
| Te midden van een tiental exemplaren van Nereis succinea Leuck., door dr. Redeke gedregd in de Zuiderzee, boven Enkhuizen, 15 Juni 1921, trof ik een geslachtsrijp ♂ aan, in heteronereis-toestand. Het exemplaar heeft een lengte van circa 30 mm., maar is niet geheel compleet. De oogen zijn vergroot en de bewapening van de slurp is normaal; alleen ontbreken de paragnathen van groep V. Slechts de voetjes van het middengedeelte van het lichaam vertoonen een epitoke wijziging. Deze begint met het 15e parapodium en strekt zich uit tot het 52e segment; de achterste parapodia stemmen geheel overeen met die van den atoken vorm (loc. cit. p. 146, fig. 3). Zooals gewoonlijk is de dorsale cirrus van de voorste 7 segmenten aan de basis aangezwollen. Bij het epitoke... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1922 |
URL: http://www.repository.naturalis.nl/record/319333 |
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| Dörjes, J.; Young, J.O.. |
| The only hitherto known freshwater acoelan, Oligochoerus limnophilus, has been fully described by Ax & Dörjes (1966). It has been recorded from habitats of different European rivers: Elbe, Ilmenau, Lahn, Main, Mosel and Donau (Kothé, 1961, 1962; Kothé & Sturz, 1963; An der Lan, 1964) where it prefers to settle on artificial stone embankments and is absent from typical lenitic regions and in river parts with a high organic pollution. The species has also been recorded from irrigation canals of rice fields in the Camargue (leg. U. Graefe). Ax & Dörjes (1966) suppose that O. limnophilus emigrated during postglacial periods out of the ponto-caspian area into their new environments because all the other species of the genus have been found in the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/317230 |
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| Registros recuperados: 92 | |
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