Capnia bifrons (Newman, 1838) drumming types sensu Rupprecht 1997

In addition to drumming signals of the real Z. bifrons (under the name Capnor) and the type of Z. rupprechti and Z. kovacsi (under the name Capbif), Rupprecht (1997) described further four mating call types from Western Europe that are undoubtedly refer to undescribed species. In the PZC material we find morphologically distinct specimens from the Jura Mts., Dr. Gilles Vinçon informed us about another distinct form found in the French Massif Central. These are possibly referred to by Rupprecht’s drumming types. Further comparative studies will be needed to establish the identity of these forms.