Biology of the Leaf Miners

Biology of the Leaf Miners

Author: E.M. Hering

Publisher: Springer Science & Business Media

Published: 2013-06-29

Total Pages: 431

ISBN-13: 9401571961

DOWNLOAD EBOOK

The development of specialised feeding habits during the course of time by human beings is paralleled in the majority of animals, in particular have developed special peculiarities, and insect larvae which in most cases are quite characteristic of the species concerned. This applies especially to phytophagous insect larvae, and anyone with the requisite experience can say with a fair degree of certainty which insect larva is responsible for any damage to be found on a plant. It leaves behind a definite "feeding pattern" which might be compared to a "visiting card" on which the genus and species are marked in runic characters. Whoever has learned to read the runes can readily determine who has been feeding on the affected spot, solely on the basic of the "visiting card" left behind. From the known factors - the name of the plant and the type of feeding patter- and after some study of the various types of plant infestation, both the genus and species of the larva producing the feeding pattern can be worked out without difficulty. The importance of "feeding pattern investigation" has now far outstripped the successes to be obtained by normal collecting. Previously, when wishing to list the species of insects present in any given locality they were caught with the net, by sugaring and other methods. This always resulted in a very defective "list" of the insects in fact existing in the locality concerned.


Tracks & Sign of Insects & Other Invertebrates

Tracks & Sign of Insects & Other Invertebrates

Author: Charley Eiseman

Publisher: Stackpole Books

Published: 2010

Total Pages: 594

ISBN-13: 0811736245

DOWNLOAD EBOOK

The first-ever reference to the sign left by insects and other North American invertebrates includes descriptions and almost 1,000 color photos of tracks, egg cases, nests, feeding signs, galls, webs, burrows, and signs of predation. Identification is made to the family level, sometimes to the genus or species. It's an invaluable guide for wildlife professionals, naturalists, students, and insect specialists.


Agromyzidae (Diptera) of Economic Importance

Agromyzidae (Diptera) of Economic Importance

Author: K.A. Spencer

Publisher: Springer Science & Business Media

Published: 2013-03-09

Total Pages: 426

ISBN-13: 9401706832

DOWNLOAD EBOOK

The original stimulus which started KENNETH SPENCER on a study of the Agro myzid flies was an invitation, which he accepted, to translate from the German the monograph on Leaf Miners by Professor E. M. HERING. From this developed nearly 20 years of collaboration until Professor HERING's death in 1967. Dr. SPENCER has himself described over 600 new species in the family, many of which he collected and reared from known host plants during his extensive travels to all the five main continents. Largely as a result of his work, the number of species known in Britain has increased from 90 in 1945 to 313 today. He is thus uniquely qualified to write this book about the hundred and fifty or so species which are regularly associated with cultivated plants. Much of the taxonomic detail provided here will be of value primarily to specialists; but with the help of a microscope and the botanical host list (Chapter 2) and the numerous illustrations (mostly prepared by ANN SPENCER) those in agri cultural institutes and elsewhere should now be able to identify the majority of species found attacking crops in any part of the world.


Trace

Trace

Author: Lauret Savoy

Publisher: Catapult

Published: 2015-11-01

Total Pages: 240

ISBN-13: 1619026686

DOWNLOAD EBOOK

With a New Preface by the Author Through personal journeys and historical inquiry, this PEN Literary Award finalist explores how America’s still unfolding history and ideas of “race” have marked its people and the land. Sand and stone are Earth’s fragmented memory. Each of us, too, is a landscape inscribed by memory and loss. One life–defining lesson Lauret Savoy learned as a young girl was this: the American land did not hate. As an educator and Earth historian, she has tracked the continent’s past from the relics of deep time; but the paths of ancestors toward her—paths of free and enslaved Africans, colonists from Europe, and peoples indigenous to this land—lie largely eroded and lost. A provocative and powerful mosaic that ranges across a continent and across time, from twisted terrain within the San Andreas Fault zone to a South Carolina plantation, from national parks to burial grounds, from “Indian Territory” and the U.S.–Mexico Border to the U.S. capital, Trace grapples with a searing national history to reveal the often unvoiced presence of the past. In distinctive and illuminating prose that is attentive to the rhythms of language and landscapes, she weaves together human stories of migration, silence, and displacement, as epic as the continent they survey, with uplifted mountains, braided streams, and eroded canyons. Gifted with this manifold vision, and graced by a scientific and lyrical diligence, she delves through fragmented histories—natural, personal, cultural—to find shadowy outlines of other stories of place in America. "Every landscape is an accumulation," reads one epigraph. "Life must be lived amidst that which was made before." Courageously and masterfully, Lauret Savoy does so in this beautiful book: she lives there, making sense of this land and its troubled past, reconciling what it means to inhabit terrains of memory—and to be one.


Marijuana Garden Saver

Marijuana Garden Saver

Author: J. C. Stitch

Publisher: Ed Rosenthal

Published: 2008

Total Pages: 188

ISBN-13: 9780932551917

DOWNLOAD EBOOK

Utilizing a handy, field guide style, this book on growing marijuana is divided into five sections by problem type: Pests, Diseases, Environmental Stresses, Nutrient Deficiencies and Controls. Problems are alphabetised within each section and identified in full-colour photographs. A quick overview of potential problems and their likely causes is followed by the author's recommendation of easy solutions.


Briefe über Blattminierer / Letters on Leaf Miners

Briefe über Blattminierer / Letters on Leaf Miners

Author: E.M. Hering

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 456

ISBN-13: 9401034826

DOWNLOAD EBOOK

My association with Prof. Hering extends over the past seventeen years, and during this period I have visited him at his home on more than forty occasions and received over 300 letters from him. These letters contain much detailed entomological information. They also throw considerable light on Prof. Hering's personality and character and the background against which he worked. The publication of at least part of these letters as a final tribute to Prof. Hering has been in my mind for many years. This original idea has now been somewhat extended by the inclusion of a number ofletters to Dr. H. Buhr, Dr. J. Klimesch, Dr. F. Groschke and G. C. D. Griffiths, all of whom shared Prof. Hering's interest in leaf-miners. Although Dr. Buhr is primarily a botanist, with Hering's encour agement he has taken an active interest in leaf-miners throughout his career and his remarkable collecting becomes apparent from Hering's letters to him. For many years Prof. Hering has written between two and three thousand letters annually. It has obviously been possible to consider here only a very small proportion of these. From many of the longer letters only isolated paragraphs have been included. Use of italics in the letters was not entirely consistent and has been reproduced as used by Prof. Hering. Selection of the letters has been based primarily on their entomolo gical interest but numerous passages have also been included illustra ting in some way Hering's personal qualities.