Hedychridium Abeille de Perrin, 1878

Lucena, Daercio, 2018, The uncommon genus Hedychridium (Hymenoptera: Chrysididae) in South America: new species and first record for Brazil, Journal of Natural History 52 (5 - 6), pp. 351-359 : 353

Hedychridium Abeille de Perrin, 1878

Hedychridium Abeille de Perrin 1878, p. 3 . Type species: Hedychrum minutum Lepeletier 1806, p. 122 (= Chrysis ardens Coquebert de Mombret 1801, p. 59 ). Designated by Ashmead (1902, p. 227).

Diagnosis

The genus has two main diagnostic characters, which are shared by most species: the single perpendicular tooth on tarsal claws (multidentate in Elampus Spinola , Holophris Mocsáry , Holopyga Dahlbom and Omalus Panzer ); and the transverse anterolateral pronotal carina (absent in Elampus , Hedychrum Latreille and Holopyga ). Other morphological remarks of the genus refer to the unvarying wing venation pattern, and the absence of other distinctive features of related elampine genera, such as: oral fossa without medial process (present in Hedychrum ); metatibia without fossa (present in Hedychrum ); mesopleuron without distinct omaulus or scrobal carina (present in Omalus and Holophris ); mesoscutellum without anterolateral tubercle (present in Exallopyga French ); apical margin of T3 evenly rounded (with apical notch in Holophris , and produced into a snout-like process in Elampus ); fore wing entirely setose (at least partly asetose in Holophris and Elampus ); M of fore wing straight or gently curved (strongly angulated in Elampus and Holopyga ); metanotum round (mucronate in Elampus ).