Spilogona trianguligera Zetterstedt 1838

• Main Authors: Sorokina, Vera S., Michelsen, Verner
• Format: Other/Unknown Material
• Language: unknown
• Published: 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Muscidae; Spilogona; Spilogona trianguligera; Faroe Islands; Murmansk; Greenland; Norway; Narvik; Jameson Land; Michelsen; Tiensuu; Arctic; Lapponia; Yakutat; Alaska
• Online Access: https://zenodo.org/record/6125951; https://doi.org/10.5281/zenodo.6125951

Spilogona trianguligera (Zetterstedt, 1838) (Figs 6–9) Anthomyza trianguligera Zetterstedt, 1838: 680. Type locality: ‘Lapponia’ in part [= Thynaes, Norway], as restricted by Ringdahl (1939: 144). Aricia trianguligera (Zetterstedt); Zetterstedt, 1845: 1466. Limnophora (Spilogona) insularis Collin, 1921: 167, 266. Type localities: Isle of Arran and Nairn, Scotland; ‘ Faröe Islands’ [= Narvik, Norway, see Pont (1995: 90)]. Collin 1930: 278, pl. XVIII: fig. 35, XXVI: figs 35 a–d. Tiensuu, 1936: 37, Finland and Murmansk. Synonymy first proposed by Ringdahl (1939: 144), endorsed by Hennig (1959 c: 352). Limnophora (Spilogona) setinervis Huckett, 1932: 64, 72, 155. Type locality: Yakutat, Alaska. Syn. nov. Spilogona trianguligera (Zetterstedt); Hennig, 1959 c: 352, pl. X: fig. 206, XVII: fig. 350 (not 351 as stated in the text and figure legend!). Spilogona setinervis (Huckett, 1932); Huckett, 1965: 196, 205, 247. Recently, VM found 1 male Spilogona in a sample of muscoid Diptera from Jameson Land on the east coast of Greenland, that evidently did not belong to any of the 22 species of Spilogona previously recorded from Greenland (Michelsen, 2006). In Huckett (1932, 1965) it keyed out as the species currently known as Spilogona setinervis (Huckett). It agreed well with Huckett’s original description, including the notable presence of a v setula on proximal part of subcosta. The presence of 1–4 setulae on ventrobasal part of subcosta is not, as far as we know, seen in other species of Spilogona. Unfortunately, occasional females of S. setinervis are without these setulae and this is the reason why Huckett (1965) no longer used this character in his key to female Spilogona. In European keys to Spilogona (Collin 1921, Hennig 1959 a, d’Assis-Fonseca 1968) the Greenland male keyed out as the species currently known as Spilogona trianguligera (Zetterstedt). Our Palearctic material of that species consists of 2 males 4 females from the Faroe Islands, Scotland, Norway and Russia (Altai Mts). These specimens all possess 1– 4 v ...