Somatochlora arctica (Zett.) and Sympetrum danae (Sulz.) from Pohorje Mountains, NE Slovenia (Anisoptera: Corduliidae, Libellulidae)
Notulae odonatologicae , Volume 4 - Issue 1 p. 17- 18
July 29, 1992, 2 S S. arctica have been taken at Stcgnetovo moCvirje (all. 1110 m), a regularly cut marshy meadow near the village of Smarlno-na-Pohorju. With abundant Eriophorum and sparse Sphagnum, the locality perfectly fits the habitat requirements of this species, as summarized by M. SCHORR (1990, Grundlagen zu einem Arlenhilfsprogramm Lihellen der Bundesrepuhlik Deutschland, Ursus, Bilthoven). — This is the fourth record in Slovenia; along with those published earlier (cf. B. KIAUTA, 1969, Varstvo Narave 6: 121-130), it represents the southern border of the known alpine range of this species. Since suitable habitats are not scarce in northern Slovenia, a systematic search is likely to result in more records. At Cmo jezero (alt. 1197 m), 4 freshly emerged 9 S. danae were noticed on July 27, 1992, and 2 of these were collected. The search for exuviae, in the thick jungle of Equisetum fluviatile, was not successful. On August 29, 1992. 2 adult d have been captured, and another 2 individuals sighted while perching on mud during a heavy wind. On September 30, 1992, the population consisted of more than 20 6, I tandem was ovipositing, and a group in "triple connection" was noticed. — The habitat is a man-made pond. The dam has been built in 1850, it was reconstructed in 1924, but collapsed in 1991. In the 1992 season, all the shallow areas were dry throughout the summer, only the deepest part of the pond and the slreambed of the main inlet had some water. In view of the teneral condition of the individuals evidenced on July 27, the authors assume, the larvae breed even under such conditions, though nothing is known on the population status in the previous years. — The record falls within the southern border of the European range of this species. The nearest records are known from central Styria (Austria) (cf. W. STARK, 1976. Die Libellen der Steiermark und des Neusiedlerseegehieles in monographischer Sicht. Inaug.-Diss. Univ. Graz). The occurrence of S. danae in Slovenia and the adjacent countries was reviewed recently by I. GEISTER (1992, Notul. odonatol. 3: 151-152). However, Cmo jezero is the first locality in Slovenia where at least temporary breeding can be suspected.
|CC BY-SA 4.0 NL ("Naamsvermelding-GelijkDelen")|
|Organisation||Societas Internationalis Odonatologica|
M. Kotarac. (1993). Somatochlora arctica (Zett.) and Sympetrum danae (Sulz.) from Pohorje Mountains, NE Slovenia (Anisoptera: Corduliidae, Libellulidae). Notulae odonatologicae, 4(1), 17–18.
|593820.jpg Cover Image , 15kb|