Deep Interstitial Habitat as a Refuge for Agabus paludosus (Fabricius) (Coleoptera: Dytiscidae) During Summer Droughts

Stefano Fenoglio; Tiziano Bo; G. Bosi

doi:10.1649/842.1

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Stefano Fenoglio,¹ Tiziano Bo,¹ G. Bosi²

¹Department of Environment and Life Sciences University of Piemonte Orientale, Via Bellini 25 I-15100 Alessandria, ITALY fenoglio@unipmn.it
²Department of Veterinary Science and Technologies for Food Safety University of Milan, Via Trentacosta 2 I-20134 Milan, ITALY

Abstract

We report information about the presence of Agabus (Gaurodytes) paludosus (Fabricius, 1801) within the interstitial zone of the streambed of the Po River (NW Italy) during droughts. During August and November 2004, we found adult and larval stages at depths of 70–90 cm below the surface when no water was present in the channel. These findings are discussed in the context of the origin of stygobiont diving beetles.

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Stefano Fenoglio, Tiziano Bo, and G. Bosi "Deep Interstitial Habitat as a Refuge for Agabus paludosus (Fabricius) (Coleoptera: Dytiscidae) During Summer Droughts," The Coleopterists Bulletin 60(1), 37-41, (1 March 2006). https://doi.org/10.1649/842.1

Received: 16 May 2005; Accepted: 1 December 2005; Published: 1 March 2006

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