Amoeba hugonis n.sp.: Life-history

1952 ◽  
Vol s3-93 (24) ◽  
pp. 427-434
Author(s):  
MONICA TAYLOR
Keyword(s):  
Life History ◽  
New Species ◽  
Nuclear Membrane ◽  
Euglena Gracilis ◽  
Adult Specimen ◽  
History Of ◽  
A New Species ◽  
Average Adult

Material collected in Loch Tannoch was allowed to macerate in a chemical nutrient. A rich crop of Euglena gracilis as well as other infusoria resulted. Eight months later, when the Euglena had encysted, many amoebae were found at the bottom of the receptacle. They constitute a new species, here named Amoeba hugonis. An average adult specimen, when extended, measures about 104x52·2µ. The nucleus consists of a central karyosome lying in the nuclear sap, separated from the cytoplasm by a wellmarked nuclear membrane. Between the latter and the karyosome is situated an achromatic ‘collar’ with chromatin particles embedded in it. Fission is described, but a study of mitosis has been deferred. The life-history of this small amoeba is very similar to that of the large A. proteus, &c. The cycle occupies two months. Chromidia begin to appear in the cytoplasm of the early adult. They give rise to spores, out of which amoebulae hatch.

On the Morphology and Life History of Fasciola nyanzae Leiper, 1910 from the Hippopotamus

1961 ◽  
Vol 35 (S1) ◽  
pp. 53-62 ◽  
Author(s):  
J. A. Dinnik ◽  
N. N. Dinnik
Keyword(s):  
Life History ◽  
New Species ◽  
Bile Ducts ◽  
The Body ◽  
Characteristic Shape ◽  
History Of ◽  
Liver Flukes ◽  
A New Species

A half a century ago, R. T. Leiper described a new species belonging to the genus Fasciola from specimens which he collected from hippopotami at the Murchison Falls, on the Victoria Nile in Uganda, in the summer of 1907. This species, Fasciola nyanzae, was found in the bile ducts of the liver, and in most instances the specimens were somewhat macerated owing to the length of time that had elapsed before the animal could be recovered from the water. Nevertheless, the characteristic shape of these liver flukes and the restriction of the branched testes to the anterior third of the body made it possible to recognise them as being different from all other species of the genus known at that time.

scholarly journals NEPTICULA POMIVORELLA, Packard; ALIAS MICROPTERYX POMIVORELLA, Packard

1901 ◽  
Vol 33 (2) ◽  
pp. 52-52 ◽  
Author(s):  
August Busck
Keyword(s):  
Life History ◽  
New Species ◽  
History Of ◽  
A New Species ◽  
Definite Proof

During a visit to Professor Fernald, in Amherst, Mass., last spring, he showed me a Nepticula, bred from Apple, which he had described in manuscript as a new species, but which he afterwards had suspected to be Micropteryx pomivorella, Packard.From reading the description and life-history of packard's species, I felt sure that it was a Nepticula and presumably the same as Professor Fernald's species, and a week after, while studying the collection in the Agassiz Museum, Cambridge, I obtained definite proof that we were right.

scholarly journals Larval morphology and life history of Eutrichosoma mirabile Ashmead and description of a new species of Eutrichosoma (Hymenoptera, Chalcidoidea)

2020 ◽  
Vol 75 ◽  
pp. 67-85
Author(s):  
Austin J. Baker ◽  
John M. Heraty
Keyword(s):  
Life History ◽  
New Species ◽  
Morphological Characters ◽  
Larval Morphology ◽  
Phylogenetic Placement ◽  
History Of ◽  
A New Species

The larval morphology and life history of the weevil parasitoid Eutrichosoma mirabile Ashmead (Hymenoptera, Chalcidoidea, Pteromalidae) are described, and the phylogenetic placement of the subfamily Eutrichosomatinae within Chalcidoidea is determined using larval morphological characters. A description of Eutrichosoma burskisp. nov. and key to the species of Eutrichosoma are provided.

scholarly journals A new species of Neocarus (Opilioacaridae) from a Brazilian ferruginous geosystem and notes on natural history

2020 ◽  
Vol 36 ◽  
pp. 11-33
Author(s):  
Leopoldo Ferreira de Oliveira Bernardi ◽  
Robson de Almeida Zampaulo ◽  
Marcus Paulo Alves de Oliveira
Keyword(s):  
Life History ◽  
New Species ◽  
Natural History ◽  
Adult Female ◽  
Southeast Brazil ◽  
History Of ◽  
A New Species ◽  
Female Genital

A new species of Neocarus is described from adult female and male specimens collected from an epigean and hypogean ferruginous geosystem located in southeast Brazil. The new species, Neocarus simmonsisp. nov., possesses 15–17 ch-type palp setae, nude female pregenital Sternitogenital region, cylindrical ovipositor without setae, and a peculiar variation of setae in the genital and pregenital Sternitogenital region of the male, with smooth and tapering setae and/or barbed and tapering setae and/or stout and ribbed setae. Female genital setae are barbed, tapering and with a thin tip. Aspects of the ecology and life history of these mites are also presented.

The biology and host range of Neoaplectana leucaniae, a new species of insect-parasitic nematode

Parasitology ◽  
1954 ◽  
Vol 44 (3-4) ◽  
pp. 392-399 ◽  
Author(s):  
J. M. Hoy
Keyword(s):  
Biological Control ◽  
Life History ◽  
New Species ◽  
New Zealand ◽  
Host Range ◽  
Parasitic Nematode ◽  
Pest Insects ◽  
History Of ◽  
A New Species

The morphology and life history of a new species of insect-parasitic nematode, Neoplectana leucaniae are described. This nematode, which may be cultured on a veal pulp medium, was used in a number of experiments against larvae and adults of New Zealand Melolonthinae, and was found capable of parasitizing all test hosts used. Lack of persistence of the nematode in soil makes it unsuitable for use in the biological control of soil-inhabiting pest insects.

The Life History of Echinostoma londonensis n.sp., the Adult of Cercaria londonensis Khan, 1960

1961 ◽  
Vol 35 (1-2) ◽  
pp. 119-132 ◽  
Author(s):  
D. Khan
Keyword(s):  
Life History ◽  
New Species ◽  
History Of ◽  
A New Species

Cercaria londonensisKhan, 1900 is shown to develop into a new species ofEchinosloma. The stages in the life history are described.

Description of a new Corythucha Stål from Argentina (Hemiptera: Heteroptera: Tingidae), with a description of its life cycle

Zootaxa ◽  
2009 ◽  
Vol 2170 (1) ◽  
pp. 61-68 ◽  
Author(s):  
SARA I. MONTEMAYOR
Keyword(s):  
Life History ◽  
New Species ◽  
Quercus Robur ◽  
Buenos Aires ◽  
The Other ◽  
South American ◽  
Immature Stages ◽  
South American Species ◽  
History Of ◽  
A New Species

A new species of the genus Corythucha, C. bonaerensis n. sp., is described along with its egg and all immature stages. It was found in the province of Buenos Aires (Argentina) feeding on Quercus robur, its host plant. Comments on the life history of C. bonaerensis are provided together with photographs, and illustrations. The main differences with the other South American species, and other Corythucha species that feed on Quercus worldwide, are also discussed.

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