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Species Sitalcina californica

 
 
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Order Opiliones Sundevall, 1833. In: Zhang Z.-Q. (ed.) Animal biodiversity: An outline of higher-level classification...
By Kury A.B.
Zootaxa 3703: 27–33, 2013

Catalogue of the Cyphopalpatores and Bibliography of the Harvestmen (Arachnida, Opiliones) of Greenland, Canada, USA, and Mexico
By James C. Cokendolpher & Vincent F. Lee
Privately Published, Vintage Press, Lubbock, Texas, iii + 82 pp., 1993

Harvestmen: The Biology of Opiliones
By Ricardo Pinto-Da-Rocha, Glauco Machado, and Gonzalo Giribet (eds.)
Harvard University Press, 2007
An excerpt, as well as the index, can be downloaded from the Harvard University Press website.

World Arachnida Catalogue
Western Australian Museum, Leibniz Institute for the Analysis of Biodiversity Change, & Natural History Museum Bern
Online here

Spiders of North America
By Sarah Rose
Princeton University Press, 2022
Substantial guide with 624 pages with 2,830 color illustrations and 508 maps. Foreword by Bug Eric (Eric Eaton).
Update 13 May 2023. Having used this book for a while now, am very impressed. Photos are excellent, and plentiful.

Amazing Arachnids
By Jillian Cowles
Princeton University Press, 2018
“This engaging book is beautifully written and illustrated, and should appeal to anyone interested in natural history. I enjoyed reading Amazing Arachnids.” —Paula Cushing, Denver Museum of Nature and Science

“Cowles has assembled a fascinating collection of phenomena pertaining to arachnids and presented it with a narrative that is simply a joy to read.” —W. David Sissom, West Texas A&M University

Death comes on two wings: a review of dipteran natural enemies of arachnids
By Gillung J.P., Borkent C.J.
J. Arachnol. 45: 1–19, 2017

Catalogue of the Smaller Arachnid Orders of the World: Amblypygi, Uropygi, Schizomida, Palpigradi, Ricinulei and Solifugae
By Mark S. Harvey
CSIRO Publishing, Australia, 2003

 
 
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