PREDATION BY ARGYRODES TRIGONUM ON LINYPHIA TRIANGULARIS, AN INVASIVE SHEET-WEB WEAVER IN COASTAL MAINE

Jeremy D. Houser; Daniel T. Jennings; Elizabeth M. Jakob

doi:10.1636/S03-15

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Jeremy D. Houser,¹ Daniel T. Jennings,² Elizabeth M. Jakob³

¹Neuroscience & Behavior Program, Tobin Hall, University of Massachusetts, Amherst, Massachusetts 01003 USA
²USDA, Forest Service. Northeastern Research Station, 686 Government Road, Bradley, Maine 04411 USA
³Psychology Department, Tobin Hall, University of Massachusetts, Amherst, Massachusetts 01003 USA

Abstract

A female Argyrodes trigonum (Theridiidae) was observed feeding on a female Linyphia triangularis (Linyphiidae), a recently established European immigrant in Maine. Multiple observations of Argyrodes spiders inhabiting L. triangularis webs suggest that this invasive sheet-web weaver is not immune to web invasions, kleptoparasitism or predation by A. trigonum. The potential impacts of A. trigonum on the invasion dynamics of L. triangularis are unknown, but likely to be minimal.

Citation Download Citation

Jeremy D. Houser, Daniel T. Jennings, and Elizabeth M. Jakob "PREDATION BY ARGYRODES TRIGONUM ON LINYPHIATRIANGULARIS, AN INVASIVE SHEET-WEB WEAVER IN COASTAL MAINE," The Journal of Arachnology 33(1), 193-195, (1 April 2005). https://doi.org/10.1636/S03-15

Received: 28 February 2003; Published: 1 April 2005

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