Revision of Lindneria Krober, with the description of two new genera Insulatitan and Ambradolon, a fossil from Dominican amber (Diptera : Therevidae : Therevinae)

A new genus of Therevidae, Ambradolon, is diagnosed from Dominican amber. T he type species, A. grimaldii, is described based on a single fossil male. Species of Therevidae possessing putative synagomorphies with A. grimaldii were identified. A cladistic analysis resolved three additional monophyleti c genera. A new genus, Insulation, represented by four new species: I. romo ynae, I. trishae, I. watsoni, and I. youngi and the described genera, Lindn eria Krober and Penniverpa Irwin & Lyneborg, were also shown to be monophyl etic lineages. Lindneria was previously represented by a single species, L. splendida Krober. Psilocephala platyptera Krober is here placed in the gen us Lindneria. Six new species of Lindneria are described: L. bellingeri, L. browni, L. dicosta, L. penelopae, L. thompsoni, and L. wintertoni. Psiloce phnla brunnipennis Krober was recognized as belonging to the genus Penniver pa Irwin & Lyneborg and is so placed as a new combination.