— This glossary was compiled and edited by volunteer scientists from multiple scientific disciplines using reputable sources, including the references listed at the bottom of this page. If you don’t find the scientific word, term, or expression you are looking for, let us know in the comment section below, and we will research the word for you, and add it to the glossary. We desperately need editors to flesh this glossary out. If you are interested, please contact jerry.cates@entomobiotics.com:


  • scape (= scapus); Gr. σκαπος “scapos” = a stem, staff; 1. arach. — an elongated process of the epigyna, in some species of spiders, usually directed posteriorly.
  • sclerite (SKLER-eyte); Gr. σκληρος “skleros” = hard, dry; 1. arach. — sclerotized plate.
  • sclerotized (SKLER-oh-teyzd); Gr. σκληρος “skleros” = hard, dry; 1. arach. —thickened and hardened.
  • scopula (SKAWP-yoo-lah) (pl. scopulae); L. scopula = a small broom; arach. — a. a brush of hairs, such as along the ventroapical surface of the legs, where they may occur with or without claw tufts; b. a loose fringe of hairs on the anterior edge of the endite and labium.
  • scutum (SKOO-tehm) (pl. scuta) (= scute); L. scutum = an oblong shield; 1. arach. — sclerotized abdominal plate, usually dorsal, of some Araneomorphae.


anat. = anatomy; arach. = arachnid; behav. = behavioral; biol. = biological (inclusive of all animals and plants); bot. = botanical (inclusive of all plants); Gr. = Greek; L. = Latin; q.v. = L. quod vide = which see; pl. = plural; taxon. = taxonomy; zool. = zoological (inclusive of all animals).


Allaby, Michael, Ed. 1991. The Concise Oxford Dictionary of Zoology. Oxford Press.
Beccaloni, Jan. 2009. Arachnids; Glossary, p. 319. University of California Press, p. 56.
Gertsch, Willis J., 1979. American Spiders, 2nd Edition: Glossary, pp. 255-260. Von Nostrand Reinhold Company.
Howell, W. Mike, and Ronald L. Jenkins. 2004. Spiders of the Eastern United States; Glossary, Chapter X, pp. 341-348. Pearson Education.
Jackman, John A. 1997. A Field Guide to Spiders & Scorpions of Texas: Glossary pp. 173-177. Texas Monthly.
Kaston, B. J. 1978. How to know the spiders: Index and Pictured Glossary, pp. 267-272. McGraw Hill Company.
Preston-Mafham, Rod. 1996. The Book of Spiders and Scorpions; Glossary, pp. 140-141. Barnes & Noble Books, New York.
Ubick, D., P. Paquin, P.E. Cushing and V. Roth, editors, 2005. Spiders of North America, Chapter 72: Glossary — pronunciation guide. Published by the American Arachnological Society.
Venes, Donald, Ed. 2009. Taber’s Cyclopedic Medical Dictionary, 21st Ed. F.A. Davis Company, Philadelphia.
Williams, Tim. 2005. A Dictionary of the Roots and Combining Forms of Scientific Words. Squirrox Press, Norfolk, England.

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