A checklist is presented of the Orthoptera of the Czech Republic. Based on the critical revision of published data and previous lists of species, which often contained only general or questionable data and which often inaccurately cited each other, we found 96 species of Orthoptera belonging to the fauna of the Czech Republic. We emphasize those changes that are based on comparison with previous checklists. We provide information on missing, unclear, and extinct species and on newly detected species, and we confirm the status of species that have been missing for a long time (Leptophyes boscii, Polysarcus denticauda, Ruspolia nitidula, Eumodicogryllus bordigalensis, Tetrix bolivari, Mecostethus parapleurus). We also note those species for which only several individuals have been detected (Pteronemobius heydenii) or those survived only at a single locality (Platycleis montana, Aiolopus thalassinus, Dociostaurus brevicollis, Omocestus petraeus) or at two localities (Poecilimon intermedius, Platycleis veyseli, Pseudopodisma nagyi). Phaneroptera nana is recorded as new for Bohemia.
Stute Ph.vtosunitur?: Adminisrrution. Zem.?de'lskulu, 6 1300 Brno (Czech Republic); e-mud: vlkC2sr.y. c;During 1994/1997, the population dynamics of the quarantine glasshouse leafminers Lirioniyza bryoniae and Liriomyza huidobrensis were studied using yellow sticky strips in glasshouses at Tvrdonice (near Bieclav). There were usually three generations per growing season. An interval of about 28 days can be recognized between the peak periods for adults, which corresponds with the development time for these leafminers under the local temperature conditions. During 1995/ 1997, three polyphagous glasshouse Liriomyza spp. were recorded in the Czech Republic outside glasshouses: the native palaearctic species L. bryoniae in 17 samples (eight squares of grid map), Liriomyza strigata in 10 samples (five squares of grid map) and the originally nearctic and neotropical quarantine pest L. huidobrensis in five samples (three squares of grid map). The host plants were broad bean for Liriomyza bryoniae (three times), onion for L. huidobrensis and broad bean (three times) and poppy for L. strigata. Overwintering of puparia of L. huidobrensis outdoors in the Czech Republic seems barely possible.
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