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Species Steatoda grandis

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The spider genera Steatoda and Enoplognatha in America (Araneae, Theridiidae)
By Herbert Levi
Psyche, Cambridge 69: 11-36, 1962

The fulva Group of the Spider Genus Steatoda
By W.J. Gertsch
American Museum novitates ; no. 1982, 1960

American spiders of the genera Audifia, Euryopis, and Dipoena (Araneae: Theridiidae)
By H.W. Levi
Bulletin of the Museum of Comparative Zoology, 129 (2): 121-185, 1963
Online here.

A revision of the genus Achaearanea (Araneae: Theridiidae)
By Hajime Yoshida
Acta Arachnologica 57(1): 37-40, 2008
This is the publication in which all North American Achaearanea were moved into Cryptachaea, Hentziectypus, and Parasteatoda... thus we no longer have genus Achaearanea in BugGuide's range.

PDF available online for free from publisher's website: https://www.jstage.jst.go.jp/article/asjaa/57/1/57_1_37/_pdf

American spiders of the genus Argyrodes (Araneae, Theridiidae)
By Harriet Exline & Herbert W. Levi
Bulletin of the Museum of Comparative Zoology Harvard 127(2):75-204, 1962
Online version available from the Biodiversity Heritage Library: http://biodiversitylibrary.org/page/4248118

The spider genera Enoplognatha, Theridion, and Paidisca in America north of Mexico (Araneae, Theridiidae)
By H.W. Levi
Bulletin of the American Museum of Natural History 112, article 1, 123 p., 1957
Full text (47Mb)

Combining genomic, phenotypic and sanger sequencing data to elucidate the phylogeny of the two-clawed spiders (Dionycha)
By Azevedo et al., 2022
Molecular Phylogenetics and Evolution 166(107327): 1-14, 2022
https://wsc.nmbe.ch/reference/16099

Systematics and evolution of ground spiders revisited (Araneae, Dionycha, Gnaphosidae). Cladistics
By Azevedo, G. H. F, Griswold, C. E. & Santos, A. J.
Cladistics 34(6): 579-626, 2018
https://wsc.nmbe.ch/reference/14218

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