Paraleptophlebia strandii (Eaton, 1901)

Salmela, Jukka & Savolainen, Eino, 2013, New records of Paraleptophlebiawerneri Ulmer, 1920 and P. strandii (Eaton, 1901) from Finland (Ephemeroptera, Leptophlebiidae), Biodiversity Data Journal 1, pp. 969-969 : 969

Paraleptophlebia strandii (Eaton, 1901)

Materials

Occurrence: recordedBy: J. Salmela; individualCount: 5; sex: males; Location: verbatimLocality: Lapponia kemensis pars orientalis: Sodankylä, Satovaara; locationRemarks: rich flark fen; verbatimLatitude: 67.6777 N; verbatimLongitude: 27.0878 E; Event: eventDate: 20.8.2012 Occurrence: recordedBy: J. Salmela; individualCount: 5; sex: males; Location: verbatimLocality: Lapponia kemensis pars orientalis: Sodankylä, Sonniharju SE; locationRemarks: rich flark fen; verbatimLatitude: 67.6823 N; verbatimLongitude: 27.0926 E; Event: eventDate: 20.8.2012 Occurrence: recordedBy: J. Salmela; individualCount: 10; sex: males; Location: verbatimLocality: Lapponia kemensis pars orientalis: Sodankylä, Postoselkä E; locationRemarks: rich flark fen; verbatimLatitude: 67.7978 N; verbatimLongitude: 26.6655 E; Event: eventDate: 9.8.2012

Notes

All sampling localities are aapamires, i.e. fens that receive water and nutrient input from the surrounding mineral lands (versus raised bogs that only receive rain water). The mires are lying on bedrock which consists of calcareous or non-acidic rocks such as ultramafic volcanic rock, gabbro and schists (Geological Survey of Finland, http://en.gtk.fi/). The calcareous influence can be seen in the bryophyte flora, which includes species such as Campylium stellatum , Scorpidium revolvens , Tomentypnum nitens and Hamatocaulis vernicosus . The fens were characterized by wet flarks (i.e. inundated moss cover) and mud-bottom pools. The collecting sites were hard to access and difficult to walk on. There were no available mineral substrates for aquatic insects. However, due to their wetness and sloping profile (most notably in Sonniharju), there were some shallow surface flows on the fens.

Adults of P. strandii were very numerous at the collecting sites. Males formed huge swarms consisting of thousands of specimens. Swarming took place over narrow strings with sedge ( Carex ) shoots in the vicinity of the pools. Swarming was observed approximately within 0.6 and 2 m of height, in the afternoon during sunny weather. The minimum distance to the nearest stream was one kilometer.