SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

It is an established fact that many insects which are now serious pests were once harmless species living on wild plants and other ”natural” sources of food. As soon as mankind provided their natural food, or at least an adequate substitute for their natural food, in bulk by cultivating plants, these animals were able to multiply to such an extent that they became a very serious problem. A well-known example is the Colorado Beetle (Leptinotarsa decemlineata) which originally lived in North America on a few wild species of Solanaceæ, but later attacked the introduced potato plants and thus became the worst insect pest of potato crops, not only in its native country, but also in Europe. Clothes Moths and Carpet Beetles are also serious pests because they are...

On the occurrence of Helicigona lapicida (L.) (Mollusca, Gastropoda) in the Netherlands

Ano: 1952

URL: http://www.repository.naturalis.nl/record/505095

Meeuse, A.D.J.; Vervoort, W..

During a visit to southern Limburg in the summer of 1942 several living specimens of Helicigona lapicida (L.) were discovered near Kamerig. In this locality the species was found in such large numbers that it seems almost astonishing that its occurrence in such abundance there had hitherto escaped attention. So far the occurrence of undoubtedly living specimens of this characteristic snail in the Netherlands has only been reported by Vervoort (1941), who recorded specimens from a couple of localities also situated in southern Limburg, where, however, the species had only been found in small numbers. Henrard and Koumans (1936) had previously drawn the attention to the occurrence of more or less fossilized specimens in various localities in the same region....

Notes on Javanese Verbenaceae

Palavras-chave: 42.73.

Ano: 1942

URL: http://www.repository.naturalis.nl/record/318716

On preparing the manuscript of the Verbenaceae for Dr C. A. Backer’s ”Flora van Java” it appeared to me that — in comparison with the monographic treatments of this family by Lam (5) and by Lam & Bakhuizen van den Brink (6) — several changes in the nomenclature and in the interpretation or delimitation of certain species are urgent. Although, considered in the light of more recent work on this family as it occurs in adjacent regions (2, 3, 8), a new critical revision of the Malaysian Verbenaceae seems desirable, we have to refrain from such a task, which would require a greater deal of investigation than the present author is able to afford at the time. Hence these notes are merely intended to account for the discrepancies between the treatment of the...

The early evolution of the Archegoniatae: a re-appraisal

Ano: 1942

URL: http://www.repository.naturalis.nl/record/524911

After a re-appraisal of the alternative hypotheses concerning the origin and the early evolution of the archegoniate land plants, the postulation of a thalassiophytic group of precursors with free isomorphic alternating generations by Church, Zimmermann, and several others is rejected. Several versions and modifications of this ‘homologous’ theory, such as Fritsch’s suggestion of diminutive filamentous algal being the progenitors of the vascular plants and Jeffrey’s idea of an advent of partly emerged (aerial) sporangiate extensions of an aquatic sporophyte, are equally untenable. In the present author’s opinion the old and reputedly almost obsolete ‘antithetic’ theory is much more compatible with the relevant evidence, provided this hypothesis is more...

The cleaning of Skeletons by means of larvae of Dermestid Beetles

Ano: 1966

URL: http://www.repository.naturalis.nl/record/535060

Skeletons are an essential part of every zoological collection. The cleaning of the carcasses or other crude skeletal material obtained from collected animals can be carried out by mechanical defleshing, by boiling in water with or without chemicals, or by a combination of mechanical cleaning and boiling, and these methods are employed in many musea as a routine treatment. In the case of small specimens this process of scraping and boiling almost invariably destroys some of het more delicate structures, so that the preparators are usually very careful when handling small carcasses for fear of damaging them, which often results in incomplete cleaning in spite of their tedious and time-devouring work. They must often feel between the devil and the deep sea,...

A new Vitex from Malaysia

Ano: 1965

URL: http://www.repository.naturalis.nl/record/504166

Lam, H.J.; Meeuse, A.D.J..

In 1919 Dr C. A. BACKER collected a plant in the Kangean Archipelago which had the appearance of a Cymaria so that the collector provisionally called it ”Cymaria triphylla BACKER“ (MS.). The same species was also collected by KARTA on the Island of Bawean in 1928. Some other sheets already extant in the Herbarium at Buitenzorg for a long time among the indeterminate specimens were recognized as identical with this ”Cymaria“ (TEYSMANN nr. 1750, Madoera and nr. 1768, Bawean). In 1937 Dr BACKER, when working up Javanese plants, had a closer examination of this plant and concluded that it could not be inserted in Cymaria, and even not in the Labiatae, but that it had rather to be put into the Verbenaceae. However, he found himself unable to identify the...

Different phenotypic variation of the snails Cepaea nemoralis and C. hortensis in a ‘mixed’ population in Southern Sweden

Ano: 1939

URL: http://www.repository.naturalis.nl/record/526106

Attention is drawn to the sympatric occurrence, in a small area in southern Sweden, of a population of Cepaea hortensis and one of C. nemoralis which show a striking difference in their phenotypic variation. The relative frequencies of the various morphs present in each population are reported. After a discussion of some possible explanations of the different variation patterns, the importance of additional records of such singular “mixed” populations of these species of snails is emphasized.

The possible origin of Cucumis anguria L

Ano: 1968

URL: http://www.repository.naturalis.nl/record/504912

Cucumis anguria L., the “West India Gherkin” or “Bur Gherkin”, is a cultigen known to have occurred in the West Indies in a cultivated or more or less adventitious state since before 1650 when the first accounts of this plant were published (1, 2). The occurrence of a single species of this old world genus — which is mainly African but extends through South West Asia to India — in America, combined with the fact that it is almost exclusively found in cultivation or as an escape, makes one feel suspicious about its being truly indigenous in the New World. Naudin (4) discussed the history of this plant and suggested that it was originally introduced from West Africa whence negro slaves were brought to the New World. However, he admittedly did not know any...

Miscellaneous ad bibliographical notes

Ano: 1958

URL: http://www.repository.naturalis.nl/record/526316

Lam, H.J.; Meeuse, A.D.J..

Referring to the identification of BRASS 5219 from Papua as a representative of the Verbenaceous Faradaya chrysoclada K. SCHUM. by E. BEER and H. J. LAM (Blumea 2, 1936, 225), Dr C. G. G. J. VAN STEENIS, the monographer of the Malaysian Bignoniaceae drew our attention to the possibility that this identification might be incorrect. It was suggested that the specimen and also all specimens hitherto known as Faradaya chrysoclada might be Bignoniaceous and might belong to Deplanchea tetraphylla (R. BR.) V. STEENIS, as all other Faradayas known are lianas, whereas F. chrysoclada was reported to possess the tree habit, as the Deplancheas. We therefore asked on loan the materials of both species from the Herbarea at Berlin (B) and Kew (K), that from Berlin...