Pegomya macrophthalma Griffiths, 1984

Michelsen, Verner & Ackland, Michael, 2009, The Pegomya maculata species group (Diptera Anthomyiidae) in Europe, with description of a new species, Zootaxa 2315, pp. 51-65 : 59

3. Pegomya macrophthalma Griffiths, 1984

Figs. 13–18 .

‘ Pegomya maculata Stein’; Chandler 1998: 168 (in part). Misidentification.

Pegomya macrophthalma Griffiths 1984: 308 , figs. 431, 432.

‘ Pegomya atricauda Ringdahl’; Petersen 2001: 185; Michelsen 2004 ( Denmark). Misidentifications.

Description. Male. Very similar to P. maculata but different as follows: Fore femur fuscous brown, only narrowly fuscous yellow on anterior surface and near apex; mid and hind femora and all tibiae fuscous yellow to yellow, only “knees” of middle and hind legs more or less darkened, fuscous brown. Short genal setae fewer, uni-serial. Sternite V ( Figs. 13, 14 ) almost as in P. maculata except membranous flap distally on posterior lobes apparently better demarcated from sclerotized part. Hypopygium ( Figs. 15, 16 ) scarcely different. Gonites ( Fig. 17 ): Postgonite strongly angled backwards on distal half, at mid-length with a deep, rounded notch at posterior margin. Phallus ( Fig. 18 ): Posterior hump of basiphallus very prominent, separated from epiphallus; distiphallus nearly straight at hind surface.

Female. Not identified.

Material examined. AUSTRIA: East Tyrol: Matrei, Hildenweg, Matrei to Seblas, 1060–1150m, 1 male 14.viii.1967, swept from pine forest and glades (Wright & Pont) [ BMNH]. DENMARK: NE Zealand ( NEZ): Copenhagen, Brønshøj, 1 male 20.vii.1982 (S. Andersen) [ ZMUC]. GREAT BRITAIN: ENGLAND: [no locality]: 1 male (A. Piffard) [ BMNH]; E Kent: Woolwich Wood, 1 male 21–31.vii.1957 (E.C.M d’Assis- Fonseca) [ BMNH]; Herts: Felden, 1 male 7.vii.1898 (A. Piffard) [ BMNH]; Worcs: Alfrick, 1 male 30.vi.1940 (C.J. Wainwright) [ BMNH]; Berks: Wytham Wood, 1 male emerged 6.vi.1954 from soil under oak (G.C. Varley) [ OUMNH]. Gloucs: Batsford Aboretum, 1 male v.1999, Malaise trap in oak wood (D.J. Mann) [ OUMNH]; SCOTLAND: Perthshire: near Tummel Bridge, 1 male 8.vii.1937 (J.E. Collin) [ OUMNH]. SWEDEN: Torne Lappmark (TO): Jebrenjokk, N shore of Lake Torneträsk, 340m, 1 male 7.viii.2001 (D.M. Ackland) [ OUMNH].

Distribution. Previously only known by the male holotype from USA: North Carolina ( Griffiths 1984). Thus all European records given above from Austria, Denmark, Great Britain ( England, Scotland) and Sweden are new. The species has in Great Britain been mixed up with Pegomya maculata (e.g., Chandler 1998) and in Denmark misidentified as P. atricauda (e.g., Petersen 2001).

Figures

FIGURES 13 – 18. Pegomya macrophthalma Griffiths, male (Denmark: NEZ: Copenhagen). 13. Sternite V. 14. Posterior lobe of sternite V, postero-lateral. 15. Hypopygium, posterior. 16. Ditto, lateral. 17. Gonites, right. 18. Phallus.