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1 Odonatrix. Biuletyn Sekcji Odonatologicznej Polskiego Towarzystwa Entomologicznego

1 2011

1 Konopko D.

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Nowe stanowisko iglicy małej Nehalennia speciosa (Charpentier, 1840) (Odonata: Coenagrionidae) w Trójmiejskim Parku Krajobrazowym

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Konopko D.

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The Pygmy Damselfly Nehalennia speciosa inhabits mainly small natural water bodies with the area less than 1 ha, great amount of mud sedge Carex limosa and slender sedge Carex lasiocarpa as well as submerged vegetation. In Poland, 75 sites of this species have been discovered so far of which 44 are regarded as contemporary. In the Tricity Landscape Park, the Pygmy Damselfly was discovered for the first time in July 2006 at the site about 1,1 km NE away from Kamień in the commune of Szemud (Konopko 2007). The next site was discovered in July 2009, in a peat bog bordered from NE with Zawiat Lake situated in the vicinity of Bieszkowice, in the commune of Wejherowo. The central point of the peat bog is a dystrophic water body with the Sphagnum moss matt separated from the lake by 90 meter- width belt of Vaccinio uliginosi-Pinetum sylvestris Kleist 1929 bog woodland. The Pygmy Damselflies are present in Carex limosa swamp. The population is small; the highest number of individuals was 70. During earlier studies this species was not found in the peat bog. The colonization of this site was probably made before our eyes. Except for the Pygmy Damselfly, 32 dragonfly species were observed in the peat bog in which four of them are under protection: Aeshna subarctica, Leucorrhinia albifrons, L. caudalis and L. pectoralis. In the future, in the area of the peat bog, the forming of the nature reserve called „Bieszkowickie Moczary” is planned, however, nowadays the steps for establishing the second refuge for the Pygmy Damselfy in the area of the Tricity Landscape Park are taken.