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Richard Arnold
104 Mountain View Court
Pleasant Hill, CA 94523-2188
Phone: (925) 825-3784
bugdctr@comcast.net

Company Information

Entomological Consulting Services, Ltd. was founded in California in 1977 by Richard A. Arnold, Ph.D., a professional entomologist, to assist government agencies and private industry in environmental, forestry, and technical matters that deal with insects and other types of invertebrates, such as crustaceans, arachnids, and snails. Since then, we have consulted on a wide variety of projects, both as a prime contractor and as a subcontractor, and have completed over 1,200 projects to date.

A special area of expertise for Entomological Consulting Services, Ltd. is rare and endangered insects and invertebrates. During the past 27 years, we have worked with all of the West Coast insects and other invertebrates recognized by the U.S. Fish and Wildlife Service (USFWS) as endangered or threatened species. Dr. Arnold is the author of USFWS recovery plans for eight of the endangered or threatened California insects. In addition, we have completed contracted studies on many of the rare and candidate insects, crustaceans, arachnids, snails, and other invertebrates in California and other portions of the United States.

Educational background for Richard A. Arnold, Ph.D., President and Principal of Entomological Consulting Services, Ltd.:

  • Ph.D. in Entomology, University of California, Berkeley
  • M.S. in Entomology, Michigan State University
  • B.S. in Biology, Cornell University




Photo by: R.Arnold
Lange's Metalmark Butterfly


Photo by: R.Arnold
Smith's Blue Butterfly


Photo by: R.Arnold
Karner Blue Butterfly