Included taxa

Purcell, W. F. (1910). The phylogeny of the tracheae in Araneae. Quarterly Journal of Microscopical Science 54: 519-564. download pdf

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Species
Species Family Page / figures published as
Calculus bicolor Orsolobidae 527 (Df) Calculus bicolor
Genera
Genus Family Page
Calculus Purcell, 1910 Orsolobidae 527