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Interesujący przypadek teratologii skrzydła u ważki Sympetrum sanguineum [O.F. MULLER, 1764] [Odonata, Libellulidae]

100%

Buczynski P.

1994

tom 13

nr 4

213-215

This article discusses an interesting case of wing teratology in Sympetrum sanguineum (O. F. Muller, 1764). The wing is small and deformed. Some veins have a modiffied course or are missing. This a resuls from larval wing primordium damage, which decreased the oxygene and haemolymph inflow.

Nowe stanowisko Crocothemis erythraea (Brulle, 1832) w Polsce Zachodniej

94%

Zawal A.

2010

tom 06

nr 1

Crocothemis erythraea belongs to rare species in Poland. Previously it was mainly recorded in southern and eastern part of the country, sites from the west were definitely less numerous. The site described in the paper near Dzwonów (53o24’43” N; 15o12’37” E) is the northernmost site of this species in Po- land. It is the complex of a dozen or so ponds with the total area of 500 ha. The biggest pond is shallow, with quickly heating up water of high transparency, with the bottom of silt partially overgrown by: Myriophyllum verticillatum, Potamogeton pectinatus, P. natans, Nuphar luteum and Polygonum amphibium. Shores of the pond are covered with a narrow belt of: Phragmites australis, Typha latipholia and Sparganium erectum. The presence of three males flying above dams was recorded. To the accompanying species belonged: Calopteryx splendens, Lestes sponsa, Erythromma najas, Ischnura elegans, Sympecma fusca, S. paedisca, Platycnemis pennipes, Coenagrion puella, C. pulchellum, Gomphus vulgatissimus, Orthetrum cancellatum, Libellula quadrimaculata and Sympetrum sanguineum. The conditions of this habitat provide the full development of Crocothemis erythraea. Due to the lack of the larvae it is only a possibility.