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

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.

1952 ◽  
Vol s3-93 (24) ◽  
pp. 427-434
Author(s):  
MONICA TAYLOR

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.


2014 ◽  
Vol 59 (2) ◽  
Author(s):  
Jacek Dabert

AbstractNeumannella skorackii, a new species of the feather mite family Dermoglyphidae (Acari, Astigmata) is described from the Red-winged Tinamou Rhynchotus rufescens (Temminck, 1815) (Aves, Tinamiformes) from Paraguay and a key to all known species of the genus is provided. The phylogenetic relationships (MP analysis of 25 morphological characters) between Neumannella species along with the evolutionary history of host-parasite associations revealed by Jungle reconciliation method are reconstructed. Relatively low cospeciation contribution to the recent host-parasite associations is discovered.


1961 ◽  
Vol 35 (S1) ◽  
pp. 53-62 ◽  
Author(s):  
J. A. Dinnik ◽  
N. N. Dinnik

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.


1901 ◽  
Vol 33 (2) ◽  
pp. 52-52 ◽  
Author(s):  
August Busck

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.


Zootaxa ◽  
2009 ◽  
Vol 2087 (1) ◽  
pp. 1-36
Author(s):  
HAO HUANG ◽  
CHANG-CHIN CHEN

A checklist of the genus Platycerus Geoffroy is updated. A method for the observation of endophallus is introduced and used for the study of four species of Platycerus from China. The morphology of Chinese species of Platycerus is reviewed, and all the useful morphological characters are clarified. A character matrix is made to accumulate all the current information on morphology of Chinese species. Platycerus yingqii sp. nov. is described from the northern slope of Mount Taibaishan, southern Shaanxi, China. This new species is similar to Platycerus rugosus, but can be distinguished by male with a browner dorsal surface, remarkably shorter tarsi, lighter and redder ventrites, shorter gap between incisor teeth and mola, male genitalia with different endophallus, female with shorter metatarsi, and female genitalia with the inner apex of hemisternite not protruding beyond the outer apex. The morphological characters of the other three species from China are also studied. A key to the geographical species groups of Platycerus is presented. Keys to the Chinese species are provided for both males and females. Finally some natural history notes are given for some species of Platycerus from China.


Zootaxa ◽  
2017 ◽  
Vol 4341 (2) ◽  
pp. 193 ◽  
Author(s):  
MUSTAFA ÜNAL ◽  
GEORGE W. BECCALONI

The endemic Madagascan genera Oncodopus Brongniart and Colossopus Saussure are revised using museum specimens, including the types, and recently collected material. A new genus, Malagasopus gen. nov., and seven new species, Malagasopus desutterae sp. nov., Malagasopus meridianus sp. nov., Oncodopus janetae sp. nov., Oncodopus brongniarti sp. nov., Oncodopus saussurei sp. nov., Oncodopus soalalaensis sp. nov. and Colossopus parvicavus sp. nov. are described. Lectotypes are designated for Oncodopus zonatus Brongniart, 1897 and Colossopus redtenbacheri (Brongniart, 1897). A new term, mesothoracic auricle, is proposed for a structure on the episternum of the mesothorax. A tabulated key to the genera and keys to the species are presented. All species are described and diagnosed, and their phylogenetic relationships, geographical distributions, habitat preferences and phenologies are documented. The life history of Colossopus grandidieri is described, and the unusual possible mate-guarding behaviour of several species is discussed. Maps showing the distribution of the species are presented, as too are 57 photographs of museum specimens, 51 drawings of morphological characters, 17 photographs of living specimens and one habitat photograph. 


1992 ◽  
Vol 70 (12) ◽  
pp. 2430-2445 ◽  
Author(s):  
María Eliana Ramírez ◽  
Akira F. Peters

The South American species of Desmarestia are revised using morphological features of field sporophytes and reproductive and ontogenetic characters obtained from laboratory culture of gametophytes and young sporophytes. Ten entities including a new species are recognized: D. chordalis, D. confervoides comb.nov., D. distans, D. firma, D. gayana, D. ligulata, D. muelleri sp.nov., D. patagonica, D. peruviana, and D. tropica. Although the taxa were distinguished in part using features of the life history in culture, most field thalli can be identified using morphological characters. A key to the South American species of Desmarestia is provided. Key words: culture study, Desmarestia, Desmarestia confervoides comb.nov., Desmarestia muelleri sp.nov., Phaeophyceae, South America, taxonomy.


2011 ◽  
Vol 24 (1) ◽  
pp. 19 ◽  
Author(s):  
Elizabeth Maciunas ◽  
John G. Conran ◽  
Jennifer M. Bannister ◽  
Rosemary Paull ◽  
Daphne E. Lee

The discovery of Early Miocene Asteliaceae fossils at Foulden Maar in southern New Zealand provided a good opportunity to assess the usefulness of cuticular information for identifying members in this family. On the basis of cuticular morphology, the Foulden specimens are assigned to Astelia Banks & Sol. ex R.Br. and described as a new species, A. antiquua Maciunas et al. They are shown to have some affinities with A. alpina, A. linearis and also an apparently unnamed Astelia taxon from southern Westland, New Zealand. Although cuticular characteristics alone were of help in identifying individual species, the addition of gross morphological characters facilitated the differentiation between Asteliaceae genera, greatly improving the phylogenetic placement of the fossil. On the basis of analysis of the combined data, Astelia and Collospermum formed a clade and were sister to a Milligania and Neoastelia clade, albeit with most branches showing little overall bootstrap support.


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