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- Volume 20, Issue 1, 1957
Journal of the Entomological Society of Southern Africa - Volume 20, Issue 1, 1957
Volumes & issues
Volume 20, Issue 1, 1957
Author C.F. Jacot-GuillarmodSource: Journal of the Entomological Society of Southern Africa 20, pp 10 –13 (1957)More Less
To have been a naturalist in the days of Linnaeus must have been pleasing and satisfying. One could study all the known species of animal life in the world and have all the published literature in one small room. Today this sounds incredible, when entomologists cannot even cope with a few families, let alone orders, of insects. It becomes daily more impossible too, to keep abreast with the vast outpourings of literature on one's own particular subject, narrow though the field may be. This is specially true in South Africa where there are no large specialised libraries.
Author H.K. MunroSource: Journal of the Entomological Society of Southern Africa 20, pp 14 –57 (1957)More Less
It is with pleasure that this paper is included in the volume of the Journal of this Society that is dedicated to Dr. A. J. T. Janse. The author has known Dr. Janse for close on fifty years and owes him much for help and encouragement in the past. Having met him first while still a school boy, it may well be that one's feelings and attitude to such a person as Dr. Janse may change during the years from those of a youth to those of one who has also engaged in taxonomic research; from a pupil to a colleague. Dr. Janse has always been willing to help in the identification of moths and has been of great assistance to the Division of Entomology. The author has had the privilege from time to time of taking visitors from other countries to meet Dr. Janse and to inspect his remarkable collections of moths. Usually they were shown many of his working methods, including not only the collecting and study of moths, his library and extensive indexes, but also the making of insect drawers and cabinets and indeed of carpentry in general. In short, each visit was a demonstration of what one person can accomplish by himself.
Revisional notes on Lepidochrysops (Lycaenidae : Lampidinae) of Kenya and Uganda, with descriptions of new species and subspeciesAuthor V.G.L. Van SomerenSource: Journal of the Entomological Society of Southern Africa 20, pp 58 –78 (1957)More Less
It is a great honour to me to be asked to contribute a short paper to the special number in tribute to the outstanding work of that great Entomologist Prof. A. J. T. Janse, and I have much pleasure in naming one of the new species descriptionbed herein in his honour. The last comprehensive survey of the species falling within the African Genus Lepidochrysops Hedicke, as now defined and generally accepted, was that by Aurivillius, in Seitz, published in 1925, under the two groups Neochrysops and Euchrysops of his comprehensive Genus CUPIDO. This review included all the species mentioned by Bethune-Baker in his 'Monograph of the Genus Catochrysops Boisduval, Trans. ent. Soc. London, 1922, parts 3, 4 ..
Author J.C. FaureSource: Journal of the Entomological Society of Southern Africa 20, pp 79 –105 (1957)More Less
Caliothrips graminicola (Bagnall and Cameron) (Figs. 1-8) 1932 Ann. Mag. n. H. (10) 10 pp. 412-419. Female (macropterous). Length (distended) 1.2-1.3 mm. Colour light brown to blackish brown, with parts of appendages yellow or colourless; head yellowish brown between eyes in front of ocelli but with a narrow crescent-shaped dark line (? internal) on each side between anterior ocellus and base of antenna, slightly darker between ocelli and on median dorsal area, distinctly darker on cheeks behind eyes, ventral aspect yellowish brown medially, brown on each side behind eyes; eyes so deep red as to appear black, ocellar crescents bright red;
Author H.E. PatersonSource: Journal of the Entomological Society of Southern Africa 20, pp 106 –113 (1957)More Less
Musca (Biomyia) longipes n. sp. This species is closely related to M. conducens Walker (1859) and M. liberia Snyder (1951) but can be differentiated from them and all other African species by the presence of a submedian av seta on t2, together with a submedian p seta on t1 and a normal proboscis. Male. Length: 5.5 mm. Head: Parafrontalia, face and parafacialia white dusted; interfrontalia dark. Antennae dark except for the apex of the second segment which is narrowly red-brown. Palpi dark. Head 1.4 times higher and 1.6 times wider than long. Frons narrowest just in front of the ocelli where it is about 0.11 of the head width. Buccae 0.14 of an eye-height. Parafacialia slightly wider than the width of third antennal segment. 7-8 inclinate parafrontal bristles, none Strong but strongest in front; ocellars weak; 1 moderate vertical at each upper eye corner; postverticals small. Proboscis slender and short.
Source: Journal of the Entomological Society of Southern Africa 20, pp 114 –116 (1957)More Less
Now that the life-history of at least one species of South African Lepidochrysops has been followed in full detail, it is possible to give a complete record of the life-cycle, which is doubtless similar to that of a number of other species of the group. Credit must be given to Mr. H. E. Irving for the discovery, many years ago, of the food-plant and the rearing of the larva through the earlier part of its life; but the difficulty of finding the larva, once it had entered an ants' nest, precluded for a very considerable period any further progress being made in tracing the subsequent life-history of Lepidochrysops patricia *. If allowance is made for climatic differences, the life-cycle of this species much resembles that of the English Lycaenid Maculinea arion (L.), as originally recorded by Frohawk.
Author R.W. WellsSource: Journal of the Entomological Society of Southern Africa 20, pp 117 –119 (1957)More Less
In late September 1916 my son and I were on the banks of the Dorp Spruit, Pietermaritzburg, where it flows past the lower edge of a small patch of bush adjoining the Botanic Gardens, altitude 2200'. Before then we had only observed Papilio euphranor in flight along the upper margin of the bush on Zwartkop, altitude 4740', and we had no knowledge of the food-plant. We were not expecting to encounter euphranor so far from Zwartkop which we believed to be its nearest locality to Pietermaritzburg. A hot North wind had blown all day, the bush was dry and little was on the wing. By chance we were resting in the shade of the only specimen of Cryptocaria latifolia in that bush. Suddenly my son called to me that a tailed Papilio of some kind had fluttered into a nearby low-growing mulberry tree on the bank, and that it was not P. ophidicephalus which frequents that area.
Author W.M. TillSource: Journal of the Entomological Society of Southern Africa 20, pp 120 –143 (1957)More Less
Author M.C.A.** Joffe, A.* & NolteSource: Journal of the Entomological Society of Southern Africa 20, pp 144 –153 (1957)More Less
The terms ""horizontal"" or ""flat"" as applied to bulk grain structures have been generally used to descriptionbe an installation in which the horizontal dimension of the grain bulk exceeds that of the vertical dimension. In ""silo"" or ""vertical"" structures the height is greater than the width or diameter of floor-space. One of the principal advantages of storing bulk grain in horizontal structures is, undoubtedly, the lower capital expenditure involved in the construction of this type of installation. A serious disadvantage of the horizontal system is, however, the difficulty experienced in preventing and controlling insect infestations which may arise in the grain.
Author F. ZumptSource: Journal of the Entomological Society of Southern Africa 20, pp 154 –161 (1957)More Less
The classification of the Oestridae and the definition of this family have been under discussion for several decades. Brauer and Bergenstamm (1889) included in the Oestridae all calyptrate flies with rudimentary mouth-parts, and in this way they formed a uniform ecological group, the larval stages of all members living as endoparasites in mammals. But the morphological features of the adults as well as of the larvae show great differences and reveal that this family is most probably not of monophyletic origin. A more profound study of the imaginal features by later authors resulted in the finding that there were several taxonomic groups, each of which contains genera and species of undoubtedly close relationship.
Drosica abjectella Wlk. (Lepidoptera: Tineidae) a predator on pineapple mealybug, Dysmicoccus brevipes Ckll. (Homoptera: Coccidae)Author W.W.G. Bï¿½ttikerSource: Journal of the Entomological Society of Southern Africa 20, pp 162 –163 (1957)More Less
During recent investigations on pineapples, larvae of the tineid Drosica abjectella Wlk., were found to be feeding on pineapple mealybug (Dysmicoccus brevipes Ckll.) in the Eastern Transvaal, South Africa. This predatory habit was first observed in February, 1953 in a pinery of the Citrus and Sub-tropical Horticultural Research Station, Nelspruit.
Author A.J.M. CarnegieSource: Journal of the Entomological Society of Southern Africa 20, pp 164 –169 (1957)More Less
Citrus mussel scale, Lepidosaphes beckii Newm. (Diaspidinae), is common in citrus orchards in various parts of South Africa. It attacks all varieties of citrus, and in some places is now regarded as a major pest. During 1954 an opportunity was offered for studying this insect in orchards of the Eastern Cape Province, and in the course of this work the following observations on mussel scale crawlers were made. The distribution and spread of this scale is effected entirely by the crawlers which, apart from the winged males, are the only mobile stage in the insects's life-history. Attention was drawn to their behaviour and habits when attempts were made in the laboratory to rear mussel scale in large numbers.
Author G. De LottoSource: Journal of the Entomological Society of Southern Africa 20, pp 170 –182 (1957)More Less
Since the previous paper (De Lotto, 1956) was sent to the press, typical material of some species referable to the genus Saissetia descriptionbed by Newstead from Uganda became available for examination and these are treated in this paper together with five apparently new species collected in Kenya and Tanganyika. Recently Takahashi (1955) erected the genus Parasaissetia, with nigra (Nietner) as the type, for the inclusion of species whose tarsi are not freely-articulated and the dorsal dermis at maturity is marked by a reticulated pattern. In view of the still incomplete knowledge of the local fauna, which makes it premature to undertake any generic revision, the new genus is here omitted. A critical analysis of Saissetia and related genera may be made later. For the time being the species dealt with in the present series of papers are limited to those provided on the venter with a band of tubular ducts all along the marginal or submarginal area of the body. Altogether in this and the previous paper nineteen species or varieties have been reviewed or descriptionbed.
Africophilus jansei n.sp. A beetle of the family Dytiscidae from Swaziland and the Eastern Cape Province of South AfricaSource: Journal of the Entomological Society of Southern Africa 20, pp 183 –186 (1957)More Less
The genus Africophilus belonging to the Laccophilinae was descriptionbed by Guignot (1947) on a female from the Ivory Coast. Since then two more species have been descriptionbed from Madagascar; A. pauliani Legros (1950) and A. nesiotes Guignot (1951) and another is descriptionbed below. As a result the original generic diagnosis is in need of amendment.
Malathion versus Parathion for the chemical control of the mealybug, Planococcus citri (Risso) on vinesAuthor P.J. KrieglerSource: Journal of the Entomological Society of Southern Africa 20, pp 187 –188 (1957)More Less
It has been shown, (Myburgh, 1951; Myburgh & Kriegler, 1953; Kriegler, 1955), that excellent control of Planococcus citri (Risso) in tablegrape vineyards in the Western Cape Province can be obtained by two summer applications of parathion. However, parathion is extremely toxic to human beings and presents a real hazard to labourers applying sprays in the vineyards. Because toxicity of malathion to human beings is so very much lower than parathion, (Johnson et al, 1952) it can be used with greater safety to spray machine operators. For this reason a field experiment was carried out to ascertain the insecticidal efficiency of malathion relative to parathion for mealy bug control.