Importance and distribution in Luxembourg
The first documented occurrence of the species in Luxembourg dates from 2009. It was found by C. Muster on 20th August 2009 in Fort Berlaimont (Municipality of Luxembourg).
Opilio canestrinii is the second most common harvestman in Luxembourg and can be found in every region of the country.
Opilio canestrinii colonises a number of open habitats independently of their moisture. It is very successful in man-made landscapes, even in bigger cities. It is a strong competitor for native species and seems able to displace or even replace those. There are indices that the similar Opilio parietinus, traditionally a common species on house walls, has nearly vanished just a few years after the arrival of O. canestrinii.
Several sources describe this harvestman as a typical species of urban areas. In Luxembourg however, the data provided from different projects show evidence that the species occurs in great number and important percentages even in close-to-nature areas. Since the sixties, O. canestrinii has spread extremely quickly northwards through Europe and has become a more or less common species in his new areas.
ISEIA protocol: B3 (3+2+3+1) = Watch List (Ries et al. 2017: 68).
Bibliography concerning Luxembourg
- Muster, C. & M. Meyer, 2014. Verbreitungsatlas der Weberknechte des Großherzogtums Luxemburg. Ferrantia 70. Musée national d’histoire naturelle, Luxembourg, 112 S. (PDF 3.8 MB)
- Ries, C., A. Arendt, C. Braunert, S. Christian, A. Dohet, A. Frantz, G. Geimer, M. Hellers, J. A. Massard, X. Mestdagh, R. Proess, N. Schneider & M. Pfeiffenschneider, 2017. Environmental impact assessment and black, watch and alert list classification after the ISEIA Protocol of invertebrates in Luxembourg. Bull. Soc. Nat. luxemb. 119: 63-70. [PDF 360 KB]
- Weber, D. (Hrsg.), 2014. Die Höhlenfauna Luxemburgs. Ferrantia 69. Musée national d’histoire naturelle Luxembourg, 408 pp. + CD-Rom (PDF 19 MB)
Last updated on Tuesday, April 10, 2018.