REEVALUATION OF THE GENUS CLOSTEROCERUS WESTWOOD (HYMENOPTERA, EULOPHIDAE), WITH A REISON OF THE NEARCTIC SPECIES

The taxonomic status and delimitation of the genus Closterocerus Westw ood is discussed, partly on the basis of new characters. The following genera are synonymized with Closterocerus: Achrysocharis Girault (mai ntained as subgenus), Achrysocharella Girault, Cecidiophaga Erdos, Chr ysocharidia Erdos, Halochariessa Erdos, Halocharis Erdos, Moserina Del ucchi, Pseudochrysocharis Girault, Wolffiella Krausse. The genus Chrys onotomyia Ashmead is regarded as a valid genus, but most species previ ously recognized in Chrysonotomyia are transferred to Closterocerus. T he Nearctic species of Closterocerus are revised, and a key to the spe cies is given. Twenty-one species are recognized, of which 8 are descr ibed as new: brachyphagus, carolinae, cyaneus, longus, nitidus, nius, texanus, violaceus. Four new synonyms are suggested: Chrysonotomyia ba liosa Yoshimoto and C. cunicularia Yoshimoto = Closterocerus cinctipen nis Ashmead; Pleurotropis tricinctus Ashmead and Closterocerus winnema nae Crawford = Closterocerus trifasciatus Westwood. Seven Nearctic spe cies are newly transferred to Closterocerus: Achrysocharis partifuscip ennis Ashmead and Moserina maculata Delucchi from Omphale, Achrysochar is phenacaspia Yoshimoto, A. spiniformis Moser, A. vesiculis Moser, Ch rysonotomyia solidaginis Yoshimoto and Wolffiella ruforum Krausse all from Chrysonotomyia. The species Closterocerus damastes Walker is reas signed to Closterocerus from Chrysonotomyia. The Palearctic species Ac hrysocharis lyonetiae Ferriere, Nesomyia cinctiventris Ashmead, Haloch ariessa germanica Erdos, Entedon lanassa Walker, Achrysocharis smaragd ula Graham, Chrysonotomyia yamagishii Kamijo, Halochariessa pannonica Erdos and Halocharis transsylvanica Erdos are newly transferred to Clo sterocerus from Chrysonotomyia. A neotype is designated for Closteroce rus cinctipennis. Lectotypes are designated for Closterocerus utahensi s Crawford, C winnemanae and Pleurotropis tricinctus.