DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 7-8/2011 str. 22 <-- 22 --> PDF |
I. Mihoci & M. Franjević: RAREAND THREATENED GEOMETRID MOTH Erannis ankeraria IN CROATIA: ... Šumarski list br. 7–8, CXXXV (2011), 353-360 prominent, and stereochemicals of genus Erannis are known (not exclusivelyforE. ankerariaalthough mixture of identified stereochemical components for the genus can be used) (Hansson etal. 1990,Szöcs et al. 1993, Goller et al. 2007). Therefore, pheromone traps should be used in attracting males in their habitats. Potential sites on which anAngoran Umber could be found correspond with xerotermophilic sun-Mediterranean oak forest (degraded) habitats (Čelik et al. 2004,Flamigni etal. 2007,Leraut 2009,Barčić et al. 2011, Baričević & Šapić 2011). In xerotermophilic environments these are represented with six vegetation communities (Vukelić etal. 2008): (1)mixed forest of Sessile Oak and Sweet Chestnut (As. Querco-Castanetum sativae Horvat 1938) that occurs in the Kvarner region above Kastav and Učka. (2)forest of Sessile Oak withAutumn Moore grass (As. Seslerio autumnalis-Quercetum petraeae Poldini/ 1964/1982) which ispresent on a single locality in Croatia, in Dragonja (Istria). (3)thermophilic forest of Pubescent Oak with Tall Moor grass (As. Molinio-Quercetum pubescentis Šugar 1981) whichgrows in the flysch part of Istria near Motovunski Novaki and represents part of a larger complex of Pubescent Oak stands in which Sessile Oak andTurkey Oakdominate. (4)thermophilic and weakly acidophilic forest of Pubescent Oak withWhite Cinquefoil(As.Potentillo albae-Quercetum pubescentis A.O. Horvat 1973) which has only been identified in the locality Bregi in the flysch part of Istria (Vukelić etal., 2008). The tree layer is dominated by Pubescent Oak, Turkey Oak and Hop Hornbeam. (5)forest and scrub of Pubescent Oak and Oriental Hornbeam (As.Querco-Carpinetum orientalisHorvatić 1939) in the sub-Mediterranean zone of the littoral belt from Istria to Dubrovnik. (6)mixed forest and scrubs of Pubescent Oak and Hop Hornbeam (As. Ostryo-Quercetum pubescentis /Horvat 1950/Trinajstić 1979) in the northern Adriatic (northern Istria, the littoral slopes of Velebit, and the northern slopes of Bukovica). After surveying potential habitats and defining current distribution of species, obtained results could help in proposing several forest management guidelines. Proposal should focus on maintaining structure and function of theAngoran Umber habitat – light Pubescent Oak and Sessile Oakforests and forest edges,in order to fulfill ecological requirementsand survival of the species.As Lepidoptera are in general habitat-dependent, forest management should consider providing good stability and condition of forests and best protection and conservation of specific microhabitats for this threatened moth. a b c d Figure 2 Erannis ankeraria and morphologically similar winter moths Agriopis marginaria (Fabricius, 1776)(a), A. aurantiaria (Hübner, 1799)(b) and A. defoliaria (Clerck, 1759)(c) Slika 2. Erannis ankeraria i morfološki slični mrazovci Agriopis marginaria (Fabricius, 1776)(a), A. aurantiaria(Hübner, 1799)(b) iA. defoliaria(Clerck, 1759)(c) (Photo –Foto: David Mihoci according to Leraut (2009) |