170 Bull. zool. Norn., vol. 43, pt 2, July 1986 NAPOMYZA WESTWOOD, 1840 (INSECTA, DIPTERA): PROPOSED CONSERVATION BY THE SUPPRESSION OF NAPOMYZA CURTIS, 1837. Z.N.(S.)2495 By Graham C. D. Griffiths {Department of Entomology , University of Alberta, Edmonton, Alberta T6G 2E3, Canada), Kenneth A. Spencer (Exwell Farm, Bray Shop, Callington, Cornwall PL17 8Q J, U.K.) and George C. Steyskal {Systematic Entomology Laboratory IIBIII, Agricultural Research Service USD A, c/o U.S. National Museum of Natural History, Washington D.C. 20560, U.S.A.) Thompson & Mathis (1980, p. 85) pointed out that the name Napomyza, used now for an agromyzid genus of wide distribution contain-ing approximately 50 species of stem or seedfeeding flies (including several of economic importance) was first proposed by Curtis (1837, p. 282) in a hitherto overlooked publication, with the sole included species Phytomyza nigricornis Macquart, 1835, p. 618. 2. Curtis treated Napomyza, a name apparently derived from an unpublished manuscript by A. H. Haliday, as synonymous with Phytomyza Fallen ( 1 8 1 0, p. 2 1 ), and was followed in this by Thompson & Mathis ( 1 980). Hendel (1934, p. 334) regarded Phytomyza nigricornis as synonymous with Phytomyza affinis Fallen (1823, p. 3). Acceptance of this synonymy, based on Curtis' publication of Napomyza, would require all species presently placed in the genus Napomyza Curtis to be given another name. In the interests of stabihty this is clearly undesirable. 3. No original specimens of Phytomyza nigricornis Macquart have survived and information from Curtis' notebook and specimens, which are preserved in the Museum of Victoria, Melbourne, shows that three different species were confused by Curtis under this name. Following careful con-sideration, Griffiths (1976, p. 21) proposed that Phytomyza nigricornis should be treated as a nomen dubium and this is now accepted by specialists on the AGROMYZIDAE. 4. Phytomyza affinis Fallen, the identity of which was clarified by Spencer (1965) following study of Fallen's types in Stockholm, is a species entirely distinct from that assumed by Hendel (1934) and we therefore reject the synonymy of Napomyza Curtis with Napomyza Fallen. 5. Westwood (1840, p. 152) in his 'Synopsis' contains the following entry for Napomyza: 'S.g. Napomyza A.H.H. MSS. 1 sp. P. festiva\ This indicates that the name was proposed as a subgenus of Phytomyza and derives from an unpublished manuscript by A. H. Haliday. Hendel (1920, p. 148) synonymised Phytomyza festiva Meigen (1830, p. 189) with Phytomyza elegans Meigen (1830, p. 148). Spencer (1966, p. 3) confirmed this synonymy, after examination of the types of both elegans a.ndi festiva in the Museum National d'Histoire Naturelle, Paris. Griffiths (1968, p. 4) examined specimens of this species in the Haliday collection in Dublin which are assumed to be those referred to as Phytomyia festiva in Haliday 's
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