Proceedings of the United States National Museum (Paperback)

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: triangle. The more recent classifications, particularly that of Szepligeti, make no attempt to group the genera into units of higher rank. It is necessary to discuss a recent change in synonomy, given by Viereck in his paper on the Type Species of the Genera of Ichneumon Flies,1 in order to make clear the use of a certain generic name which has long been associated with another group of parasitic Hymenop- tera. This change of name is taken from Viereck's paper referred to above, as I have not had access to Curtis's British Entomology to verify Viereck's conclusions. Fabricius described the genus Bracon in his Systema Piezatorum in 1804, page 102, with a number of included species. Curtis hi hie British Entomology (1825), No. 69, designated the species described as Ichneumon desertor by Linnaeus, and included in Bracon by Fabricius, as the type of the genus Bracon. Not until 1862 did Frster designate Bracon minutator Fabricius as the type of Bracon, and so establish the present-day conception of the genus. In the same paper (p. 246) Frster established the new genus Cremnops and included the single species Agaihis defiagrator Nes, which is the same species as Ichneumon desertor Linn?us. From this it is clear that the genus name Bracon will have to be applied to those species at present included in the genus Cremnops, and that Cremnops Frster is a synonym of Bracon Fabricius. It is extremely unfortunate that taxonomic work on the parasitic hymenoptera should be still further complicated in this fashion, but there seems to be no other alternative if the International Code of Nomenclature is followed. GENUS BEACON FABRICIUS (CREMNOPS FRSTER AND OF AUTHORS). The following characters, not all of which, however, are distinctive, will serve to indicate the species belongin...