Willis John Gertsch (October 4, 1906 – December 12, 1998) was an American arachnologist. He described over 1,000 species of spiders, scorpions, and other...
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species of spiders from the family Atypidae. It was described by Willis J. Gertsch and Norman I. Platnick in 1980. The species was described from specimens...
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Tooth Cave spider (category Taxa named by Willis J. Gertsch)
endangered species. The Tooth Cave spider was first described in 1974 by Willis J. Gertsch, as Leptoneta myopica. At the time it was only known from Tooth Cave...
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Neoantistea is a genus of dwarf sheet spiders that was first described by Willis J. Gertsch in 1934. As of May 2019[update] it contains twenty-five species: Neoantistea...
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of araneomorph spiders in the family Anapidae, first described by Willis J. Gertsch in 1941. As of April 2019[update] it contains thirteen species, found...
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Loxosceles laeta (Nicolet) (Araneae)". Entomology News. 91 (4): 130–132. Willis John Gertsch (1967). "The spider genus Loxosceles in South America (Araneae: Scytodidae)"...
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V. Chamberlin & Willis J. Gertsch in 1929. As of April 2019[update] it contains thirty species: Hololena adnexa (Chamberlin & Gertsch, 1929) – USA Hololena...
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Araneus illaudatus (category Taxa named by Willis J. Gertsch)
Family: Araneidae Genus: Araneus Species: A. illaudatus Binomial name Araneus illaudatus (Gertsch & Mulaik, 1936) Synonyms Aranea illaudata Araneus pima...
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Brown recluse spider (category Taxa named by Willis J. Gertsch)
cool, thermally stable environment. "Taxon details Loxosceles reclusa Gertsch & Mulaik, 1940", World Spider Catalog, Natural History Museum Bern, retrieved...
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Agelenopsis aperta (category Taxa named by Willis J. Gertsch)
are found in many different types of spider venoms. "Agelenopsis aperta (Gertsch, 1934)". Discover Life. The Polistes Corporation. Retrieved 2020-12-14...
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this species was first published in 1958 by Ralph Vary Chamberlin & Willis J. Gertsch Platnick, Norman I. (2010): The world spider catalog, version 10.5...
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Selenyphantes is a genus of sheet weavers. It was first described by Willis J. Gertsch & L. I. Davis in 1946. As of August 2021[update] it contains six species...
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abalonea Gertsch, 1961 — USA Lutica clementea Gertsch, 1961 — USA Lutica maculata Marx, 1891 — USA Lutica nicolasia Gertsch, 1961 — USA Gertsch, Willis J. (1961)...
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maya. It was first described by Willis J. Gertsch in 1977, and has only been found in Mexico. "Gen. Tixcocoba Gertsch, 1977". World Spider Catalog Version...
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Neonella (category Taxa named by Willis J. Gertsch)
Neonella vinnula Gertsch, 1936 (type) – USA Gloor, Daniel; Nentwig, Wolfgang; Blick, Theo; Kropf, Christian (2019). "Gen. Neonella Gertsch, 1936". World...
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known in a small area of California. The species was named after Willis J. Gertsch who described many species of North American arachnids. "Archoleptoneta...
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Hickmania (category Taxa named by Willis J. Gertsch)
spider (Hickmania troglodytes). The genus was first described by Willis J. Gertsch in 1958, and has been found only in Tasmania. It is the last of an...
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Kauaʻi cave wolf spider (category Taxa named by Willis J. Gertsch)
2014. "ECOS: Species Profile". ecos.fws.gov. Retrieved 2022-04-26. Gertsch, Willis J. (20 May 1973). "The Cavernicolous Fauna of Hawaiian Lava Tubes,...
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of the family Scytodidae. It was raised to the rank of family by Willis J. Gertsch using the spelling "Diguetidae". Pickard-Cambridge's use of double...
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Torreya trap-door spider (category Taxa named by Willis J. Gertsch)
T6008A12230159.en. Retrieved 16 November 2021. "Taxon details Cyclocosmia torreya Gertsch & Platnick, 1975". World Spider Catalog. Natural History Museum Bern. Retrieved...
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containing the single species, Argennina unica. It was first described by Willis J. Gertsch & S. Mulaik in 1936, and has only been found in Texas. Individuals...
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genus of North American crevice weavers that was first described by Willis J. Gertsch & Wilton Ivie in 1936. They are 1.5 to 3.5 millimetres (0.059 to 0...
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araneomorph spiders in the family Phrurolithidae. It was first described by Willis J. Gertsch and Louie Irby Davis in 1940, and placed with the Liocranidae. It...
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year 1852. Washington: A.O.P. Nicholson. doi:10.5962/bhl.title.47030. Gertsch, Willis J.; Soleglad, Michael (1966). "The scorpions of the Vejovis boreus...
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Sonora. They are also found in the neighboring state of Sinaloa. Gertsch/Ennik, Willis/Franklin. "The spider genus Loxosceles in North America, Central...
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Uroctonus mordax (Western Forest Scorpion)". CCGP. Retrieved 2022-06-03. Gertsch, Willis John (1972). "Studies of North American scorpions of the genera Uroctonus...
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Berlin, DE: de Gruyter. Retrieved 2016-02-05 – via Perseus / Tufts U. Gertsch, Willis John & Platnick, Norman I. (1976). "The suborders of spiders: A cladistic...
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Antrodiaetidae (category Taxa named by Willis J. Gertsch)
fold the door. List of Antrodiaetidae species "Family: Antrodiaetidae Gertsch, 1940". World Spider Catalog. Natural History Museum Bern. Retrieved 2020-07-24...
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Castianeira variata (category Taxa named by Willis J. Gertsch)
hairs, darker on the sides. New American spiders of the Clubionidae, W.J. Gertsch. 1942. The American Museum of Natural History; No. 1195. The Spider Subfamily...
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3-4". Google Books. MacMillian Company. Retrieved 24 October 2022. Gertsch, Willis. "The spider genus Loxosceles in South America (Araneae, Scytodidae)...
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