Comparative epidermal morphology of West African species of Jatropha L. (Euphorbiaceae)

In describing the following new species from West Africa, some words of explanation are needed as to the generic names used. In the first place, it is necessary to say that the writer follows Messrs. Dyar and Knab in considering that most of the genera into which Meigen's genus Anopheles has recently been split up are not genera in any accepted sense, and should sink under the old name Anopheles. Provisionally, however, Stethomyia, Chagasia, Calvertina and Bironella are considered as distinct; as none of these genera are African, this will not affect the present paper. Lieut.-Col. A. Alcock, of the London School of Tropical Medicine, has kindly allowed me to see the manuscript of a paper on the classification of Anopheles, which he is about to publish in the Annals and Magazine of Natural History, and I have been able to concur entirely with his views; he recognises only five sub-genera of Anopheles, the sub-genus Nyssorhynchus including all those species with flat scales on thorax and abdomen, i.e., the genera Nyssorhynchus, Cellia and Neocellia of Theobald's Monograph.

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Studies in Diurnal Rhythms

Journal of Experimental Biology ◽

10.1242/jeb.28.2.165 ◽

1951 ◽

Vol 28 (2) ◽

pp. 165-172

Author(s):

J. L. CLOUDSLEY-THOMPSON

Keyword(s):

Diurnal Rhythm ◽

Rhythmic Activity ◽

Temperature Fluctuations ◽

West African ◽

Diurnal Rhythms ◽

Locomotory Activity ◽

Depressing Effect ◽

African Species ◽

Fluctuating Light ◽

Effect Of Light

Visual experiments on two small British species of millipedes have demonstrated that the diurnal cycle of rhythmic activity as represented by the number of animals on the surface is primarily a response to light and darkness, but is also correlated with the stimulus of falling temperature in the evening. Aktograph experiments on two large West African species of millipedes have demonstrated an endogenous diurnal rhythm independent of fluctuating light and temperature, and persisting (in Ophistreptus) up to 19 days. Locomotory activity is stimulated both by increases and decreases of temperature; and it is probable that temperature fluctuations are of primary importance in the initiation of diurnal rhythms. The effect of light on activity is slight, but constant temperatures over long periods have, a depressing effect.

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Sylvan katydids (Orthoptera: Tettigoniidae: Pseudophyllinae) of the Guinean Forests of West Africa hotspot: an overview and descriptions of new species

Zootaxa ◽

10.11646/zootaxa.1712.1.1 ◽

2008 ◽

Vol 1712 (1) ◽

pp. 1

Author(s):

PIOTR NASKRECKI

Keyword(s):

New Species ◽

West Africa ◽

West African ◽

The State ◽

Published Data ◽

The West ◽

African Species ◽

Forest Coverage

The state of knowledge on sylvan katydids (Tettigoniidae, Pseudophyllinae) of Guinean Forests of West Africa hotspot is discussed. Based on published data on their distribution, and the extent of the current forest coverage of the region it is possible that some of the West African species of the Pseudophyllinae may be threatened or even extinct. Five new species are described (Adapantus affluens sp. nov., A. angulatus sp. nov., A. pragerorurm sp. nov., Tomias gerriesmithae sp. nov., and Mormotus alonsae sp. nov.), and 4 species of West African Pseudophyllinae are redescribed.

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