Download or read book A Review of Leafhoppers of the Genus Draeculacephala written by David A. Young and published by . This book was released on 1959 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Review of Leafhoppers of the Genus Draeculacephala written by David A. (Jr.) Young and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Review of Leafhoppers of the Genus Dreaeculacephale written by David A. Young and published by . This book was released on 1959 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Revision of the Leafhopper Genus Xyphon hemiptera Cicadellidae written by Therese A. Catanach and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The leafhopper genus Xyphon, included in the sharpshooters, is a widely distributed group of insects whose species are vectors for various plant diseases. Xyphon has historically contained up to 9 species. These species have been poorly delimited in the past and their identification has been difficult using published keys. The genus is revised here based on a new species level phylogenetic assessment that incorporates both morphological and molecular data. The genus Xyphon was erected to contain leafhoppers that possessed a reticulated forewing apex but lacked both a median sulcus on the crown and a carinate anterolateral crown-face margin both of which are present in the closely related genus Draeculacephala. Young (1977) revised most of the genera included in Xyphon's containing subfamily. He did not attempt a revision of Carneocephala (the genus that formerly contained most Xyphon species), but noted the need for a revision of its species. This revision of the genus Xyphon is based on the examination of approximately 8,000 specimens and includes a phylogenetic analysis of the genus that includes data from one gene (NDI) and 47 morphological characters. A generalized model of each preliminary taxonomic unit was used to test the monophyly of each species. These tests resulted in the synonomization of 4 former species: Xyphon gillettei to include X. balli; and X. reticulatum to include X. diductum, X. dyeri, and X. sagittiferum. Parsimony and Bayesian techniques were used to infer relationships among species. These analyses resulted in almost identical tree topologies. In all analyses Xyphon was monophyletic and Draeculacephala was its sister genus although clade support for the genus was generally low. The analyses found that X. flaviceps and X. fulgidum form a basal clade within Xyphon, above which X. gillettei and X. n. sp. 1 (new species 1) form a clade that is sister to a third clade containing X. triguttatum, X. nudum, and X. reticulatum.

Download or read book A Review of the Leafhoppers of the Genus Gypona written by Edmund Harrison Gibson and published by . This book was released on 1919 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Review of the Leafhoppers of the Genus Gypona North of Mexico written by Edmund Harrison Gibson and published by . This book was released on 1920 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Bulletin written by Mervin William Nielson and published by . This book was released on 1968 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Available Publications of the United States Department of Agriculture written by United States. Dept. of Agriculture and published by . This book was released on 1960 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Available Publications of the United States Department of Agriculture written by United States. Department of Agriculture and published by . This book was released on 1963 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Index to USDA Technical Bulletins Numbers 1 1802 written by Ellen Kay Miller and published by . This book was released on 1993 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1959 with total page 1196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hard Red Winter Wheat Improvement in the Plains written by Clarence Walter Langston and published by . This book was released on 1959 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Catalogue of the Homoptera written by United States. Agricultural Research Service and published by . This book was released on 1964 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of the Cicadelloidea written by Zeno Payne Metcalf and published by . This book was released on 1964 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1959 with total page 2106 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.

Download or read book Checklist of Major United States Government Series written by and published by . This book was released on 1972-10 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Leafhoppers Cicadellidae written by P. W. Oman and published by Oxford University Press, USA. This book was released on 1990 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: