Download or read book Phylogenetic treatment and taxonomic revision of the trapdoor spider genus Aptostichus Simon Araneae Mygalomorphae Euctenizidae written by Jason E. Bond and published by PenSoft Publishers LTD. This book was released on 2012-12-19 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Californian Floristic Province, located on the Pacific Coast of North America, is a region recognized as a ?biodiversity hotspot?.ÿ The area?s rich floristic diversity is also reflected in its remarkable diversity of mygalomorph spiders ? the group that includes trapdoor spiders, tarantulas, funnel spiders, and their other close relatives.ÿ This monograph documents the species diversity currently attributed to the euctenizid genus Aptostichus Simon distributed primarily throughout California, but also found in the habitats of Arizona and Nevada.ÿ Based on the examination of approximately 2000 specimens from museum and field collections, 40 species are assessed, 33 of which are new to science ? A. dantrippi, A. cabrillo, A. pennjillettei, A. asmodaeus, A. nateevansi, A. chiricahua, A. icenoglei, A. isabella, A. muiri, A. barackobamai, A. sinnombre, A. hedinorum, A. aguacaliente, A. chemehuevi, A. sarlacc, A. derhamgiulianii, A. anzaborrego, A. serrano, A. mikeradtkei, A. edwardabbeyi, A. killerdana, A. cahuilla, A. satleri, A. elisabethae, A. fornax, A. lucerne, A. fisheri, A. bonoi, A. cajalco, A. sierra, A. huntington, A. dorothealangeae, and A. chavezi.
Download or read book A Revision of the American Funnel web Mygalomorph Spider Genus Euagrus Araneae Dipluridae written by Frederick A. Coyle and published by . This book was released on 1988 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The American diplurid genus Euagrus, distributed from Arizona south to Costa Rica, is revised for the first time. Euagrus is defined to include those euagrine diplurids with the following character states: no australotheline crescent; terminal cymbial spines; interlocking spinule patches on male femora I and II; a ventral, proximal, nonspatulate, tibia II mating apophysis with one or more large apical spines; two or three ventral mating keels on metatarsus II; no macrosetae brush on the prolateral surface of male tibia II; and two or more sclerotized stalks with unsclerotized bulbs on each (unsclerotized) spermathecal trunk. The relationships of Euagrus to other euagrine genera are discussed. A cladogram (based on outgroup comparison with the sister genus, Phyxioschema), a key, diagnoses, descriptions, tables of quantitative character values, illustrations, analyses of variation, natural history information, locality records, and distribution maps are provided for the 20 recognized species of Euagrus. Eight of these species are newly described: E. carlos, E. charcus, E. garnicus, E. gertschi, E. gus, E. leones, E. rothi, and E. zacus. Six specific names are newly synonymized: E. ravenus Gertsch and Mulaik, E. apacheus Gertsch and Mulaik, and E. ritaensis Chamberlin and Ivie with E. chisoseus Gertsch; E. empiricus Chamberlin and E. scepticus Chamberlin with E. josephus Chamberlin; and E. pragmaticus Chamberlin with E. rubrigularis Simon"--Page 205
Download or read book Behaviour and Ecology of Spiders written by Carmen Viera and published by Springer. This book was released on 2017-11-02 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within the last few decades, arachnology in the Neotropical region has experienced a great development filling the knowledge gap in one of the most diverse regions of the world. Nevertheless, large geographical areas remain poorly sampled, especially within the Amazon, and new genera and species have been continuously discovered, even in urban areas. In congruence with the recent improvements in research, several aspects of the ecology, behaviour and natural history of spiders, such as interactions with other predators and parasitoids, social interactions, dispersal patterns, habitat requirements, mating behaviors, among others, are being carefully investigated. These recent contributions incorporate substantial information on the preexisting knowledge on these subjects every year. Our main objective with this book is to present a summary on these new researches and on the currently knowledge on the main subjects involved in the general theme, emphasizing the contribution of the rich fauna of the Neotropical region to the research of behaviour and ecology of the spiders.
Download or read book Spider Webs written by William Eberhard and published by University of Chicago Press. This book was released on 2020-12-22 with total page 679 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this lavishly illustrated, first-ever book on how spider webs are built, function, and evolved, William Eberhard provides a comprehensive overview of spider functional morphology and behavior related to web building, and of the surprising physical agility and mental abilities of orb weavers. For instance, one spider spins more than three precisely spaced, morphologically complex spiral attachments per second for up to fifteen minutes at a time. Spiders even adjust the mechanical properties of their famously strong silken lines to different parts of their webs and different environments, and make dramatic modifications in orb designs to adapt to available spaces. This extensive adaptive flexibility, involving decisions influenced by up to sixteen different cues, is unexpected in such small, supposedly simple animals. As Eberhard reveals, the extraordinary diversity of webs includes ingenious solutions to gain access to prey in esoteric habitats, from blazing hot and shifting sand dunes (to capture ants) to the surfaces of tropical lakes (to capture water striders). Some webs are nets that are cast onto prey, while others form baskets into which the spider flicks prey. Some aerial webs are tramways used by spiders searching for chemical cues from their prey below, while others feature landing sites for flying insects and spiders where the spider then stalks its prey. In some webs, long trip lines are delicately sustained just above the ground by tiny rigid silk poles. Stemming from the author’s more than five decades observing spider webs, this book will be the definitive reference for years to come.
Download or read book Dominican Amber Spiders written by David Penney and published by Siri Scientific Press. This book was released on 2008 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Focus on Biodiversity Research written by Jan Schwartz and published by Nova Publishers. This book was released on 2007 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological diversity, or "biodiversity," refers to the variety of all life on earth, and the complex relationships among living things, and between living things and their environment. Biodiversity includes genetic variety, species diversity, and variability in communities, ecosystems and landscapes. Biodiversity sustains the environments in which we live and on which our lives and those of every other living creature on Earth depend. Thanks to biodiversity, we are able to obtain such necessary goods as food, clothing, medicine, and fuel. Equally important are the ecosystem services that biodiversity provides, such as clean air and drinkable water. Conservation scientists have identified a number of universal threats to biodiversity: habitat loss and degradation, invasive species, pollution, overpopulation, overexploitation and consumption, and global climate change. This book examines critical issues in this field from researchers around the globe.
Download or read book Spiders of India written by P. A. Sebastian and published by Universities Press. This book was released on 2009 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arachnida Mygalomorphae Araneomorphae Pseudoscorpionida Amblypygi Palpigradi written by Main and published by BRILL. This book was released on 1985-12 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amazonian Arachnida and Myriapoda written by Joachim Adis and published by . This book was released on 2001-12-31 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: An "Identification Manual" on the Amazonian Entomofauna for beginners and non-specialists has been demanded for many years. Most taxonomic literature on Neotropical Arachnida and Myriapoda is strictly descriptive, keys in translated and accepted textbooks are restricted to the higher taxa and first introductions to Amazonian arthropods refer to specific sampling sites and are mainly devoted to insects. And the other hand, taxonomical knowledge on Amazonian Arthropoda was much improved due to investigations for the last two decades, cooperatively between the National Institute for Amazonian Research and the Tropical Ecology Working Group at the Max-Planck-Institute for Limnology in Ploen/Germany
Download or read book Bulletin of the American Museum of Natural History written by Joel Asaph Allen and published by . This book was released on 1995 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises articles on geology, paleontology, mammalogy, ornithology, entomology and anthropology.
Download or read book Biogeography written by Mihails Gailis and published by . This book was released on 2010 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biogeography is the study of the geographic distribution of taxa and their attributes in space and time. Investigating biogeographic patterns and processes requires considerable amounts of data collected over large spatial and/or temporal scales. Evolutionary biogeography integrates distributional, phylogenetic, molecular and paleontological data in order to discover biogeographic patterns and assess the historical changes that have shaped them, following a step-wise approach. This book aims to understand the biogeography of the Drosophilidae in Africa and in other regions. This book also examines the development of preventive and educational components of conservation biogeography. The relevance of biogeographical evolutionary analyses for conservation science is discussed as well. In addition, the general methods that can be applied to prioritise areas for protection at regional global scales are also briefly commented on and exemplified with Mexico as a case study.
Download or read book Tropical Rainforests written by Eldredge Bermingham and published by University of Chicago Press. This book was released on 2005-08 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthesizing theoretical & empirical analyses of the processes that help shape these unique ecosystems, 'Tropical Rainforests' looks at the effects of evolutionary histories, past climate change, & ecological dynamics on the origin & maintenance of tropical rainforest communities.
Download or read book New Zealand Journal of Zoology written by and published by . This book was released on 1990 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cumulative Book Index written by and published by . This book was released on 1996 with total page 2230 pages. Available in PDF, EPUB and Kindle. Book excerpt: A world list of books in the English language.
Download or read book Zoological Catalogue of Australia Arachnida written by and published by Australian Government Publishing Service. This book was released on 1983 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The published works are derived from the Zoological catalogue of Australia database. Taxa in the Australian fauna are divided among volumes to form sets of about 1800-2000 species available names, such that each volume comprises the whole or part of one or more major groups.
Download or read book Memoirs of the Queensland Museum written by and published by . This book was released on 1995 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book African Spiders written by Anna Sophia Dippenaar-Schoeman and published by . This book was released on 1997 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
