European species of Tubpontania gen. nov., a new genus for species of the Pontania crassispina group (Hymenoptera: Tenthredinidae: Nematinae)

Tubpontania gen. nov. (type species Nematus anomalopterus Forster, 1854), is proposed for the species of the former Pontania crassispina group. Tubpontania anomaloptera (Forster, 1854), comb. nov., = Amauronematus maidli Zirngiebl, 1937, syn. nov., = Nematus (Pontania) tuberculatus Benson, 1953, syn. nov. Other European species of the genus are Tubpontania cyrnea (Liston, 2005) (= Pontania joergenseni Enslin, 1916, syn. nov.; preoccupied by Pontania jorgenseni Strand, 1908), Tubpontania crassispina (Thomson, 1871), comb. nov., Tubpontania purpureae (Cameron, 1884), comb. nov., and Tubpontania nudipectus (Vikberg, 1965), comb. nov. Tubpontania nitidinota sp. nov., closely related to T. nudipectus, is described from Fennoscandia. Furthermore, the following North American species belong here: Tubpontania arctophilae (Benson, 1960), comb. nov., Tubpontania populi (Marlatt, 1896), comb. nov., Tubpontania pumila (Rohwer, 1910), comb. nov., Tubpontania rotundidentata (Zinovjev & Vikberg, 1999), comb. nov. and Tubpontania terminalis (Marlatt, 1896), comb. nov.