A gradient of interstitial Niphargus rhenorhodanensis populations in two karst/floodplain transition zones of the French Jura

The Bou-Rouch technique was used to sample two small alluvial plains in two different karst areas. One was mainly supplied by karst water (Verna), the other by both karst and surface water (Pissoir).Physical and chemical characteristics varied with time (seasons) and location of sampling sites at both stations.The distribution of Niphargus rhenorhodanensis populations was influenced by the geographical characteristics of the outlets. Only a small number of individuals was found near the outlet and none in the floodplain when the outlet was located at a base-level (Verna). Individuals were more numerous and their presence constant at all sites and dates when the outlet was located at the overflow level of the massif (Pissoir).     

Contribution à la connaissance des Encyrtidae (Hymenoptera : Chalcidoidea) du Maroc,nouvelles données et comparaison avec la faune d’Afrique du Nord

Au Maroc, la famille des Encyrtidae (Hymenoptera : Chalcidoidea) compte actuellement 46 espèces. Six genres (Acerophagus Smith, 1880, Cerchysiella Girault, 1914, Cheiloneurus Westwood, 1833, Copidosoma Ratzeburg, 1844, Epitetracnemus Girault, 1915, Tineophoctonus Ashmead, 1900) et sept espèces [Cheiloneurus elegans (Dalman, 1820), Copidosoma floridanum (Ashmead, 1900), Epitetracnemus intersectus (Fonscolombe, 1832), Habrolepis pascuorum Mercet, 1921, Metaphycus melanostomatus (Timberlake, 1916), Metaphycus castaneus (Mercet, 1921) et Tineophoctonus armatus (Ashmead, 1888)] sont signalés pour la première fois de ce pays. Les échantillonnages ont été réalisés dans trois stations d’étude au sein de la subéraie de la Maâmora au cours de deux années successives (juin 2012 à avril 2014).