Volume 67 (2018): Edizione 1 (September 2018)

This paper summarizes the records of Dendroleon pantherinus (Fabricius, 1787), a European species of antlion belonging to rare and threatened taxa, in the Czech Republic. The species is associated with an ancient xerothermic broadleave forest habitat. So far, D. pantherinus was recorded only a few times in the Czech Republic − always in the southernmost part of Moravia. Several new records of the species from Moravia and Silesia are given. These are Nivnice, Mohelno, Mašovice (in southeast Moravia) and Bukovec (near the Czech-Polish border, in Silesia), where several specimens were sampled, mostly in the dwellings. Therefore, we presume at least partially synanthropic life history of the species.

New records of 110 species of the acalyptrate Diptera family Agromyzidae are given from Portugal, including Madeira, Porto Santo and the Azores. A quarantine plant pest, Nemorimyza maculosa (Malloch, 1913), was detected in the Old World for the first time. Details on Phytobia xylem- miners and a parthenogenetic Phytomyza species are recorded together with new distribution data. For certain species morphological and taxonomic notes and discussions on known or new host plants are added. A complete checklist of Agromyzidae of Portugal is presented.

Calamagrostis abnormis, a Sino-Himalayan species, is reported with new distribution records in southern Sichuan and southeastern Xizang, China. The species was previously recorded to be distributed in Yunnan and western Guizhou in China, Nepal, Bhutan, India, and Northwest Vietnam. The general distribution map of C. abnormis is presented.

Herbarium revision resulted in the finding of five new records of Epilobium pseudorubescens in Poland. The distribution map of the species is provided.

The Manx Shearwater (Puffinus puffinus) rarely visitor to middle Europe already in the 19th century. Holewa (1900) introduced a species for Silesia (before 1899), but nothing more in known, not even his source, and his work was criticized at his time. Nevertheless, he rightly assumed the generic membership as well as did all later authors, Mlíkovský’s (2012) evaluation that H. Holewa mentioned an unknown name “Puffinus anglicus” or that he had mistaken it with the name of the Gull-billed Tern

Gemmabryum J.R.Spence & H.P.Ramsay is considered to be congeneric with two monotypic South American moss genera, Neobryum R.S.Williams and Osculatia De Not., of which the latter has priority. It is the earliest available generic name for one of the largest segregates of the broadly conceived genus Bryum Hedw. which consists of some 44 species disposed in three sections that have a worldwide distribution. Traditionally, they were all placed in Bryum or Brachymenium Schwägr. and the relevant transfers to Osculatia are effected in the present account.

There has been the assessment of current occurrence and situation of non-native fish species in two hydrological regions – the Upper Odra and Morava river basins. The river basin of Upper Odra is situated in the area of River Odra springs featuring mostly minor streams which are not currently accessible for the migration of fishes from the lower river parts and from the Baltic Sea because of the existence of tens of migration barriers in the area of Poland. There has been actually proved the occurrence of eight non-native fish species the presence of which is, with the exclusions of Carassius gibelio and Pseudorasbora parva, the result of the planned introduction related to the fish management activities. The River Morava basin consists of two parts – the system of the River Morava itself and the entire River Dyje basin. Currently, there are 16 non-native fish species. Apart from the eight species existing also in the Odra river basin, there are also eight other species the existence of which relates to the migration accessibility from the confluence of these two rivers for fishes from the River Danube through the lower part of the River Morava. The species Lepomis gibbosus, Neogobius melanostomus and Proterorhinchus semilunaris were the last ones which have arrived there by themselves. Coregonus maraena and Coregonus peled are bred in fishponds.

The basic part of the non-native fishes’ spectrum existing in free waters of the two basins consists of the species which are bred in aquaculture and fishponds (Oncorhyncus mykiss, Salvelinus fontinalis, Ctenopharyngodon idella, Hypophthalmichthys molitrix, and Hypophthalmichthys nobilis). These species, with the exception of Hypophthalmichthys molitrix and Hypophthalmichthys nobilis, introduced also into the fishing grounds and especially Oncorhynchus mykiss and Ctenopharyngodon idella make the important fishes for anglers. Their presence in the waters of the Czech Republic might be considered as beneficial from the economic point of view. From the ecological point of view, the im- portant fact is that they have become very well acclimatised in the local conditions and their natural breeding does not take place and their distribution in water ecosystems, as well as their numbers are fully determined by the management of the Czech Anglers Union. However, Carassius gibelio, Pseudorasbora parva and also Lepomis gibbosus in the River Morava basin have been assessed as distinctly invasive species having more negative impacts on the original ichthyocenosis and biodiversity. Neogobius melanostomus is also potentially dangerous in this basin. In the case of spread of Lepomis gibosus into the River Odra basin, it might become also potentially highly dangerous.