Thereva Fabricius, 1798: 548

Michelsen, Verner & O’Hara, James E., 2014, A review of genus-group names in Diptera (Insecta) that J. C. Fabricius “ borrowed ” from other dipterists and proposed as new in his systematic works from 1775 to 1805, Zootaxa 3873 (1), pp. 73-81 : 76

Thereva Fabricius, 1798: 548 , 560.

Type species: Conops subcoleoptratus Linnaeus, 1767 (the 1st of six included species), by designation of Herting (1984: 168). Junior homonym of Thereva Latreille, 1797 . Senior but invalid objective synonym of Phasia Latreille, 1804 (type species: Conops subcoleoptratus Linnaeus, 1767 ) ( Tachinidae ). The International Commission on Zoological Nomenclature (2006) placed the name Thereva Fabricius, 1798 on the Official Index of Rejected and Invalid Generic Names in Zoology following an application by Holston et al. (2003).

Remarks. The first usage of the name Thereva by Latreille (1797) was for species of Therevidae and thus equals the earlier usage of Bibio by Fabricius (1775). Fabricius (1798) first proposed the name Thereva for six species of Tachinidae , and subsequently ( Fabricius, 1805) for 13 Tachinidae and one Syrphidae . Fabricius’s usage of Thereva for species of phasiine Tachinidae became widely accepted in the pre-1820 literature (J.W. Meigen, G.W.F. Panzer, C.F. Fallén, etc.), but his name was replaced later by Phasia Latreille, 1804 .