212 Vertagopus pseudocinereus n.sp. A new species of Collembola (Isotomidae) from North Norway by ARNE FJELLBERG Zoological Museum, N-5014 Bergen, Norway A bstract Vertagopus pseudocinereus n.sp. is described from specimens collected under bark on dead Pinus sil- vestris and Betula pubescens at Pasvik, Finnmark County, North Norway. The species was also ob- served on imported timber at Spitsbergen. The mor- phological difference from V. cinereus (Nicolet) mainly the absence of ventral setae from the thora and second abdominal segment. Male V. pseudc cinereus are dimorphic with shortened abdomina macrochaetae in the reproductive phase. In 1973 some specimens of an unknown form of Vertagopus were collected by the author under bark on pine timber near Ny Alesund, West Spits- bergen. The timber, and possibly also the Col- lembola, had been imported to Spitsbergen in connection with mining activity. As the origin of the timber was uncertain, the material was put aside. In 1974 I studied the Collembola fauna at Pasvik in Finnmark and the same Vertagopus form was discovered. It is described below. Type material Holotype. Female, 1.5 mm, labelled: "Norway. 0st Finnmark: Sor Varanger. Storbrysttjern, 0vre Pasvik. 23.VI.1974. Under bark on Betula pubescens. A. Fjell- berg leg." Deposited
Insect Systematics & Evolution – Brill
Published: Jan 1, 1975
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