Troglohyphantes zanoni Pesarini, 1988

Isaia, Marco & Pantini, Paolo, 2010, New data on the spider genus Troglohyphantes (Araneae, Linyphiidae) in the Italian Alps, with the description of a new species and a new synonymy, Zootaxa 2690, pp. 1-18 : 12-13

Troglohyphantes zanoni Pesarini, 1988

Troglohyphantes zanoni Pesarini, 1988 : Pesarini, 1988a: 92, figures 3–4, 9–10; Pesarini, 1989: 230, figures 1–6; Pantini 2000: 363; Pesarini 2001: 125.

Material examined. Italy, Lombardia, Province of Bergamo: Bergamo, Astino, broadleaf wood, 270 m, 12/5/ 2000 – 12/6/2000, 3ɗ, 7Ψ; 12/6/2000 – 11/7/2000, 1ɗ, 4Ψ; 11/7/2000 – 12/8/2000, 3ɗ, 3Ψ; 2ɗ, 12/8/2000 – 12/9/ 2000, 3Ψ; 12/9/2000 – 12/10/2000, 2ɗ, 1Ψ; 2ɗ, 11/10/2000 – 12/11/2000, 2Ψ, ITAS legit (pitfall traps); Premolo, dolines South of B.ta Camplano m 1850, 4 /8/2004– 29/9/2004, 1ɗ, Museo BG legit (pitfall traps); Premolo, alpine prairies, 1900 m, 1Ψ 4/8/2004 – 29/9/2004, Museo BG legit (pitfall traps); Premolo, Rhododendron scrublands near Baita Camplano, 1850 m, 19/6/2003 – 22/7/2003, 2Ψ; 29/9/2004 – 21/6/2005, 2ɗ; 21/6/2005 – 21/7/2005, 1ɗ, 2Ψ; 21/7/2005 – 21/9/2005, 1ɗ, 1Ψ, Museo BG legit (pitfall traps); Schilpario, road to Passo Campelli, moraine, 1750 m, 30/8/2006 – 25/10/2006, 4ɗ, Museo BG legit (pitfall traps); Schilpario, Valle di Téiass, fir wood, 1500 m, 28/7/2005 – 18/10/2005, 3ɗ, 1Ψ; 8/6/2006 – 28/6/2006, 3Ψ; 18/ 10/2005 – 8/6/2006, 1Ψ, Museo BG legit (pitfall traps); Province of Lecco: Casargo, Val Marcia, wood, 1000 m, 25/ 6–11/9/2008, 10ɗ, 18Ψ, M. Massaro and W. Zucchelli legerunt (pitfall traps); Casargo, Val Marcia, Pizzo d’Alben, prairie, 1850 m, 25/ 6–11/9/2008, 1ɗ, 1Ψ, M. Massaro and W. Zucchelli legerunt (pitfall traps); Casargo, Val Marcia, Val Foppone, prairie, 1750 m, 25/ 6–11/9/2008 1Ψ, M. Massaro and W. Zucchelli legerunt (pitfall traps); Paderno d'Adda, Adda di Paderno, 13/10/2002 2ɗ, 2Ψ, G. Comotti legit. Veneto, Province of Padova: Teolo, c/o Le Corbeggiare, damp wood 140 m, 4/6/2002 – 27/6/2002, 1ɗ; 4/6/2002 – 27/6/ 2002, 2Ψ; 27/6/2002 – 8/10/2002, 1ɗ, 2Ψ; 8/10/2002 – 27/3/2003, 1ɗ, 27/3/2003 – 12/6/2003 4Ψ; 3Ψ, Museo BG legit, (pitfall traps); Teolo, Monte Venda, chestnut wood, 450 m, 4/6/2002 – 27/6/2002, 4Ψ; 27/6/2002 – 8/10/ 2002, 6ɗ, 10Ψ; 8/10/2002 – 27/3/2003, 23ɗ, 10Ψ; 27/3/2003 – 12/4/2003 3ɗ, 11Ψ, Museo BG legit (pitfall traps).

Note. This is an epigean species with a disjunct distribution (Central Lombard Prealps and Colli Euganei). At lower elevation it is frequently found in forests while at higher elevation it is found in a variety of cool habitats. According to the remarkable preference of this species for forest habitats, we assume that populations found at higher altitudes in Premolo and Casargo, represent possible relicts of the ancient populations, previously inhabiting forests. In this area forest naturally attains 2000 m a.s.l., but it have been progressively removed for pastoral use. Therefore we assume that the main cause of the disjunct distribution of this species (Central Lombard Prealps /Colli Euganei) might be due to the fragmentation of the original forest.