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3 December 2019 Leaf webs of Emblyna sp. and Mallos hesperius (Araneae: Dictynidae)
William G. Eberhard
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The prey capture webs of Emblyna sp. and Mallos hesperius (Chamberlin, 1916) span gentle curves in the surfaces of single, rigid leaves. They share several traits with orb webs: geometrically regular and approximately planar arrangements of strong, non-sticky lines; geometrically regular arrays of sticky lines laid on these non-sticky lines; and frequent renewal (webs are routinely damaged by rain, and are often largely renewed daily). They generally differ from orbs in that neither the sticky nor the non-sticky lines are organized radially. Comparisons with the webs of 22 other dictynid species in seven other genera reveal little phylogenetic pattern. Comparisons with the orb-like para-orbs of six, distantly related species reveal variable combinations of orb-like traits in different groups, suggesting widespread convergence. New details of possible taxonomic interest concerning how silk is combed from the cribellum are described.

William G. Eberhard "Leaf webs of Emblyna sp. and Mallos hesperius (Araneae: Dictynidae)," Arachnology 18(3), 260-269, (3 December 2019).
Published: 3 December 2019

flexible design
leaf form effects on web design
non-orb webs
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