Some observations on the bionomics of Tabanus par, Walker, and Tabanus tæniola, Pal. de Beauv

Notwithstanding the work which has been conducted during the last few years on blood-sucking flies, and particularly on those which occur in Tropical Africa, owing to their connection, whether proved or merely suspected, with the spread of various diseases of man and animals, nothing has hitherto been published on the life-history of any African species of the large family Tabanidæ, except in the case of Tabanus biguttatus, Wied.* It is hoped, therefore, that the following notes on the bionomics of two of the more common Tabanids, though incomplete, may nevertheless be of some interest.

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On the blood-sucking midge Culicoides vexans Stager, including the description of its eggs and the first-stage larva

Parasitology ◽

10.1017/s0031182000018436 ◽

1953 ◽

Vol 43 (1-2) ◽

pp. 148-159 ◽

Cited By ~ 14

Author(s):

B. Jobling

Keyword(s):

Life History ◽

Royal Society ◽

Short Communication ◽

Tropical Medicine ◽

Stage Larva ◽

The North ◽

Blood Sucking ◽

History Of ◽

North Western

At one of the meetings of the Royal Society of Tropical Medicine and Hygiene, I made a very short communication on the three blood-sucking midges (Jobling, 1929). My particular reference was to Culicoides vexans, which is the most troublesome and commonestspecies in spring, in the northern and the north-western suburbs of London. At that time I had been studying the life history of this midge, including the morphology of its eggs, larvae and the pupa, but this work was not completed.

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Revision of the African species of Monanthotaxis (Annonaceae)

Blumea - Biodiversity Evolution and Biogeography of Plants ◽

10.3767/blumea.2021.66.02.01 ◽

2021 ◽

Author(s):

P.H. Hoekstra ◽

J.J. Wieringa ◽

P.J.M. Maas ◽

L.W. Chatrou

Keyword(s):

Conservation Status ◽

Taxonomic Revision ◽

Floral Biology ◽

New Combinations ◽

Rain Forests ◽

Tropical Africa ◽

African Species ◽

Distribution Maps ◽

Vernacular Names ◽

History Of

This taxonomic revision of the continental African species of Monanthotaxis (Annonaceae) includes 79 species and one variety. Thirteen new species (M. aestuaria, M. bidaultii, M. confusa, M. glabra, M. hexamera, M. mcphersonii, M. quasilanceolata, M. sterilis, M. submontana, M. suffruticosa, M. ursus, M. vulcanica and M. wieringae) are described and 5 new combinations (M. biglandulosa, M. kenyensis, M. ochroleuca, M. pynaertii and M. seretii) are made. The genus Monanthotaxis consists of lianas or lianescent shrubs. It occurs throughout forests in tropical Africa and the highest species diversity is found in the Western Central African rain forests. A key for flowering material is provided, just like a synoptic key including 45 characters. Topics included in the revision are the history of the taxonomy of Monanthotaxis, morphology, leaf anatomy, floral biology, distribution and habitat, phylogeny and finally ethnobotany and phytochemistry. Each species is fully described including synonymy, notes on distribution, habitat & ecology, vernacular names, uses and a preliminary IUCN conservation status. Distribution maps are provided for all species, illustrations for 48 species and photographs of 22 species. An index of exsiccatae and an index of the scientific names are included at the end.

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On the Life History of Neottiophilum praeustum (Meigen 1826) (Diptera-Acalyptera) Parasitic on Birds, with some general considerations on the Problem of Myiasis in Plants, Animals and Man

Parasitology ◽

10.1017/s0031182000019946 ◽

1924 ◽

Vol 16 (1) ◽

pp. 113-126 ◽

Cited By ~ 14

Author(s):

D. Keilin

Keyword(s):

Life History ◽

Bacterial Infection ◽

Feeding Habits ◽

Early Stages ◽

New Family ◽

Blood Sucking ◽

History Of ◽

First Time

1. Neottiophilum praeustum (Meigen 1826) is an Acalypterate fly, the larva of which inhabits the nests of various birds, e.g. Greenfinches, Chaffinches, Linnets, Thrushes and Blackbirds.2. The structure of the early stages of this fly namely eggs, larva and pupa is here described for the first time.3. Hendel's view that Neottiophilum should be separated into a new family is confirmed.4. The larvae of Neottiophilum live as intermittent blood-sucking parasites upon the birds. Their feeding habits are similar to those of Phormia and Passeromyia.5. The structure of the pharynx in Cyclorhaphous Dipterous larvae gives important indications as to the mode of feeding. Those larvae which are provided with longitudinal ridges are saprophagous or living upon decomposed vegetable or animal substances, while those which are devoid of ridges are biontophagous or feeding upon living substances (parasites in plants and in animals, predaceous or living in the uterus of the mother).6. This generalisation, when applied to the study of myiasis in plants, animals and man, enables us to separate them into two categories: (1) primary or parasitic myiasis and (2) secondary or pseudoparasitic myiasis, these being either accidental (intestinal) or following upon bacterial infection.

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The Haemogregarines of Mammals and Reptiles

Parasitology ◽

10.1017/s0031182000003620 ◽

1908 ◽

Vol 1 (4) ◽

pp. 318-321 ◽

Cited By ~ 20

Author(s):

W. S. Patton

Keyword(s):

Life History ◽

New Species ◽

Sexual Reproduction ◽

Life Histories ◽

Sexual Cycle ◽

Blood Sucking ◽

Intracellular Parasites ◽

Asexual Multiplication ◽

History Of ◽

Vegetative Cycle

In two recent papersm Sambon and Seligmann (1907, 1908) have recorded some observations on the intracellular parasites of snakes, and have described no less than ten new species. The authors, in discussing the life histories of these parasites, have made the startling discovery that, “the life history of the haemogregarines like that of the haemoprotozoa is divided into two cycles: a schizogonic or ‘vegetative’ cycle spent in the blood of vertebrates and characterised by asexual multiplication, and a sporogonic or sexual cycle spent in the digestive organs of blood-sucking invertebrates and characterised by sexual reproduction.” The authors then go on to speak quite familiarly of young merozoites, adult schizonts, adult sporonts, and so on.

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Crystal chemistry of high-Tc superconductors

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100178720 ◽

1990 ◽

Vol 48 (4) ◽

pp. 1118-1119

Author(s):

Maryvonne Hervieu

Keyword(s):

Oxygen Deficiency ◽

Large Family ◽

Copper Oxides ◽

High Tc Superconductors ◽

High Tc ◽

Single Mechanism ◽

Square Planar ◽

History Of ◽

Bismuth Cuprates ◽

New Compounds

Four years after the discovery of superconductivity at high temperature in the Ba-La-Cu-O system, more than thirty new compounds have been synthesized, which can be classified in six series of copper oxides: La2CuO4 - type oxides, bismuth cuprates, YBa2Cu3O7 family, thallium cuprates, lead cuprates and Nd2CuO4 - type oxides. Despite their quite different specific natures, close relationships allow their structures to be simply described through a single mechanism. The fifth first families can indeed be described as intergrowths of multiple oxygen deficient perovskite slabs with multiple rock salt-type slabs, according to the representation [ACuO3-x]m [AO]n.The n and m values are integer in the parent structures, n varying from 0 to 3 and m from 1 to 4; every member of this large family can thus be symbolized by [m,n]. The oxygen deficient character of the perovskite slabs involves the existence or the co-existence of several types of copper environment: octahedral, pyramidal and square planar.Both mechanisms, oxygen deficiency and intergrowth, are well known to give rise easily to nonstoichiometry phenomena. Numerous and various phenomena have actually been characterized in these cuprates, strongly depending on the thermal history of the samples.

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