Pegomya atricauda Ringdahl 1944

• Main Authors: Michelsen, Verner, Ackland, Michael
• Format: Other/Unknown Material
• Language: unknown
• Published: 2009
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Anthomyiidae; Pegomya; Pegomya atricauda; Abisko; Chandler; Michelsen; Småland; Torne Lappmark; Bolmen; Tiensuu; karelia*
• Online Access: https://zenodo.org/record/6223676; https://doi.org/10.5281/zenodo.6223676

2. Pegomya atricauda Ringdahl, 1944 Figs. 8–12. ‘ Pegomyia maculata Stein’; Stein 1906: 53, 88 (in part); Stein 1916: 125 (in part). Misidentifications. Pegomyia atricauda Ringdahl 1944: 16; Ringdahl 1959: 243, 252. ‘ Pegomya maculata Stein’; Chandler 1998: 168 (in part). Misidentification. Pegomya atricauda Ringdahl; Hennig 1973 a: 527, text-figs. 455, 456, plate-figs. 772, 886 and 925; Michelsen 2004 (Finland, Sweden). Description. Male. Very similar to P. maculata but different as follows: Legs overall darker: All femora fuscous brown, or mid and hind femora fuscous yellow on basal three-quarters; tibiae fuscous brown to fuscous yellow. Short genal setae fewer, uni-serial. Sternite V (Fig. 8) and hypopygium (Figs. 9, 10) only in subtle details different from other species of the P. maculata species group. Gonites (Fig. 11): Postgonite strongly angled backwards on distal half, but without a rounded notch at posterior margin as in P. macrophthalma (Fig. 17). Phallus (Fig. 12): Posterior hump of basiphallus prominent, arising immediately below epiphallus; distiphallus convex at hind surface. Female. Not identified. Material examined. FINLAND: Karelia australis (Ka): Vehkalahti, 2 males 12.vii. 1969 (L. Tiensuu) [FMNH]. GREAT BRITAIN: ENGLAND: Herefordshire: Devereux Pool, male paralectotype of Pegomyia maculata Stein, 3.vi. 1898 (J.H. Wood) [NMS]; SCOTLAND: Inverness: Loch Garten, 1 male 24.vi. 1963 (E.C.M d’Assis-Fonseca) [BMNH]. SWEDEN: Småland (SM): Bolmen, male holotype of Pegomyia atricauda Ringdahl, 27.vi. 1943 (O. Ringdahl) [MZLU]. Torne Lappmark (TO): Abisko, 360m, Ridonjira mouth, 1 male 4.viii. 2001 (D.M. Ackland) [OUMNH]. Distribution. Previously only known with certainty by the male holotype from Sweden: Småland (Ringdahl 1948), as the present study has shown that subsequent records from Finland (Hackman 1976; Hackman & Meinander 1979) and Denmark (Michelsen 2004) are based on misidentifications of P. maculata and P. macrophthalma, respectively. However, other material confirms the occurrence of ...