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POVOLN, D., HULA, V.: On an invasion of the flesh-fly Liosarcophaga aegyptica (Salem, 1935) into Central Europe with the discovery of Helicophagella verstraeteni (Lehrer, 1975) in East Slovakia (Diptera, Sarcophagidae). Acta univ. agric. et silvic. Mendel. Brun., 2004, LII, No. 4, pp. 91-102 The invasion of the subtropical flesh-fly Liosarcophaga aegyptica (Salem, 1935) into South Moravia was observed during late summer 2003. This African insect was known to occur in the maritime habitats of the Black Sea and after World War II sporadically also in eastern Hungary, southern Slovakia and Lower Austria. Its population density increased in the Danube Basin and the first flies were also captured in South Moravia during late summer 2003. Elementary analyses revealed that this flesh-fly prefers habitats with high species diversity and important species similarity and that it might become sedentary in this territory. The flesh-fly Helicophagella verstraeteni (Lehrer, 1975) accompanying very dry and warm habitats of Romania, Hungary and France was discovered in a similar habitat of eastern Slovakia and is new to the fauna of Central Europe. Results of single linkage analyses in communities with Liosarcophaga aegyptica are presented together with the figures of the male genitalia of the two species of flesh-flies treated. flesh-flies, Sarcophagidae, Ponticomediterranean element, ecology Ročník LII 9 Číslo 4, 2004 91 The invasions of Central Europe by (thermophilous) insect species from southeastern Europe are becoming an interesting attribute of the repeated warm years that have been occurring mainly in the second half of the 20th century. Let us briefly mention only some of interesting and/or particularly striking invasions (immigrations) within which we may discern several groups, e.g. a) immigrated and establishing species: Colias erate (Esper, 1805) (Stiova, 1991; švestka, 1995), Euscrobipalpa ocellatella (Beyd, 1858) (Weismann & Povolný, 1960), Cucullia fraudatrix Everesmann, 1837 (Kudla, 1965), Diachrysia zosimi (Hübner, 1822) (Moucha & šmelhaus, 1954); b) periodically immigrating species: Argynnis pandora (Dennis & Schiffermüller, 1775) (Moucha, 1951), Catocala puerpera (Giorna, 1791) (Laštůvka et al., 1993); c) presently immigrating: Brenthis daphne (Dennis & Schiffermüller,1775) (Potocký & Němý, 1996); d) immigrant taxa later disappeared: Eupithecia 92 D. Povolný, V. Hula gueneata Millière, 1862 (Wichra, 1965), Hyssia cavernosa (Everesmann, 1842) (Schwarz, 1947), Aetheria cappa (Hübner, 1809) (Wichra, 1965); e) sudden outbursts of species from natural or seminatural habitats into secondary habitats: Lycaena dispar (Haworth, 1803) or Mantis religiosa (Linnaeus, 1767) etc. In contrast to the above insect species that invaded Central Europe, there are two invasive species of clearly tropical origin among calliphorid and sarcophagid flies, both more or less scavenging or carcass reducing species. The first of them is the greenbottle, Chrysomya albiceps (Wiedemann, 1819) of the family Calliphoridae, which has repeatedly invaded Central Europe during the past 40 years (Gregor & Povolný, 1960; Povolný, 2002). The second one, Liosarcophaga aegyptica (Salem, 1935), a tropical fleshfly of the family Sarcophagidae, has invaded Central Europe quite recently. It was first observed in southern Moravia during the first days of August and repeatedly captured there until October 2003. The invasion of the latter species appears to show similar traits as that of Chrysomya albiceps.

acta universitatis agriculturae et silviculturae mendelianae brunensis

On an invasion of the flesh-fly Liosarcophaga aegyptica (Salem, 1935) into Central Europe with the discovery of Helicophagella verstraeteni (Lehrer, 1975) in East Slovakia (Diptera, Sarcophagidae)