Acta Zoologica Cracoviensia, 11() 1966
Chrząszcze (Coleoptera) zebrane na plaży w okolicach Pobierowa na Pomorzu Zachodnim
[The Beetles (Coleoptera) Collected on the Beach near Pobierowo in Western Pomerania]
Abstract:
SUMMARY. The author investigated the beetle fauna of a beach of the cliff coast near Pobierowo (Department of Szczecin, Baltic coast). He found two associations of beetles there, of which one, on the dunes, was a xerophilous association and included Amara tibialis Payk., Saprinus quadristriatus Hoffm., Phylan gibbus (Fabr.), Melanimon tibiale (Fabr.) and Otiorrhynchus atroapterus Deg. The other association occurred in a thicket overgrowing a steep cliff slope. The author investigated its spring aspect represented by Agelastica alni (Lin.), Phyllobius piri (Lin .) and Xyleborus dispar (Fabr.). In addition, three aggregations of beetles were found on the beach. The first of them consisted of beetles cast ashore together with flotsam and collected on the border-line between the dry and the damp sand. They originated from cultivated fields and crowns of trees of the coastal forests (mostly Coccinellidae and Chrysomelidae) and from the fresh water of the Haff of Szczecin and the river Dziwna and their banks (for the most part Carabidae, Hydradephaga and Hydrophilidae). The second aggregation was located at the foot of dunes and in dune hollows. It was formed during gusty winds transporting light material, dead and alive, along the beach. This aggregation was the richest; the author found 97 species of beetles (1948 specimens) in an area of 1 sq. m. (see Table XXVIII). Gastroidea polygoni (Lin.) and Propylaea quatuordecimpunctata (Lin.) were the most numerous species. The third aggregation occurred at the foot of a cliff, where the Carabidae and Curculionidae prevailed. They rolled down the cliff from the woods covering its top. In the material collected (177 species, about 5000 specimens) the author found 11 species new to the fauna of the Polish coast. The most interesting of them are Acupalpus dubius Schilsky and Gronops inaequalis Вон.
