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The research was carried out in the years 1991–1994 in agricultural landscape of medium mosaic degree in the area of Łęczyca. It covered parasitoids of the Pimplinae subfamily (Hymenoptera, Ichneumonidae), inhabiting refugium habitats such as shrubberies, field borders, roadsides and forest edges. The method used was scooping in order to catch imagos. 48 species were found, which made up 36.1% of this subfamily’s domestic fauna and 63.1% of those reported for Wielkopolska. Dominant species were Endromopoda detrita (Holmgr.) (D = 19.5%), Itoplectis maculator (F.) (D = 11.5%), I. alternans (Grav.) (D = 11.3%), Pimpla contemplator (Muell.) (D = 9.2%) and Zaglyptus multicolor (Grav.) (D = 7.1%). The greatest species diversity was reported from the forest edge (34 species), while the highest number was found in the shrubberies (268 individuals). The greatest stability of species composition was found in the shrubbery communities. The greatest species similarity between communities was reported for the shrubberies and the forest edge (SM = 53.5%). The highest similarity in terms of quantity occurred between the groups on the field border and road edge (Re = 64.5%).
The fauna of Ceraphronoidea in Poland is exceptionally poorly known; only eleven species of Ceraphronidae and five of Megaspilidae have been recorded so far. The occurrence of another species, Aphanogmus terminalis (FÖRSTER) (Ceraphronidae) is reported here, on the basis of a male specimen reared from a gall of Rhabdophaga sp. (Cecidomyiidae) collected near Poznań, Western Poland. This minute wasp has been known so far only from Switzerland, Sweden, Denmark, Finland, Ireland and Romania.
The structure of the social wasp communities was studied in the forest areas of the Karkonosze Mts. transformed by acid rains in 1989 and 1994. A significant increase of species diversity (H') was observed in the season of the even year, which resulted from the increased competing interactions between queen mothers. Whereas the distribution of the species' number decreased together with the altitude proportionally to natural distribution of the species' number recorded in the Tatra Mts. On the other hand, the only significantly increased value in the dynamics of Vespinae density in vegetation zones of the Karkonosze Mts. was recorded for the lower subalpine forest. While observing the progressing successive restoration of forests, one can assume that the recorded structural changes in communities of social wasps represent their transitional state.
Two braconid wasp taxa with enlarged eyes and ocelli indicative of probable nocturnal activity are discussed and described from the lowermost Eocene amber of the Paris Basin.The new tribe Palaeocharmontini nov., for new genus Palaeocharmon with type species Palaeocharmon basalis sp. nov. is described and illustrated in the subfamily Charmontinae. The similarity of this taxon with members of subfamilies Helconinae, Homolobinae, and Brachistinae is shown and the peculiar character [presence of hind wing recurrent vein (m−cu)] unknown previously in non−cyclostome braconids is discussed. A third fossil species of the genus Phanerotoma (Ph. menieri sp. nov.) is described and compared with known species from the Baltic amber.
The paper presents information about wasps known from the Kampinos National Park in Central Poland (Hymenoptera: Vespidae). The specimens were collected with the use of Moericke traps during the years 2000-2006. The presence of 27 species was confirmed. Six species are recorded for the first time from the Park. Eight species recorded earlier were not confirmed during present survey. Currently 35 species of the Vespidae are known from the Kampinos National Park (56% of the Polish fauna).
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The Cretaceous genera of the hymenopteran family Braconidae are discussed. Overall, eight braconid subfamilies, including two only known from this period, and 17 genera together with two having unclear subfamily position, have been recorded in Cretaceous period. Two new genera, Magadanobracon gen. nov. (with two species, Magadanobracon rasnitsyni sp. nov. and M. zherikhini sp. nov.) and Cretorhyssalus gen. nov. (with type species Cretorhyssalus brevis sp. nov.) are described. The discussed position of the new genera in Protorhyssalinae remains putative owing to a lack of information about multiporous sensillae of the antenna and the poor preservation of the basal half of the hind wing. The earliest recorded thickened hind tibia in the female sex, as a probable apomorphic character of the subfamily Protorhyssalinae, and the evolutionary state of the antefurcal vs. postfurcal positions of the recurrent vein in the fore wing of Braconidae are discussed.
Chrysura trimaculata was found in Roztocze and Małopolska Upland. This is the first reliable record of this species from Poland.
Studies on parasitoids living on larvae of leaf-miners resulted in obtaining 29 species of Braconid wasps reared from mining Lepidoptera. Out of them 23 are for the first time recorded from Poland. For each species essential information on hosts, hosts’ food plants and localities are given.
The species composition of sphecid wasps (Hymenoptera: Sphecidae) in western part of Kampinoski National Park (surroundings of the Field Study Centre in Bromierzyk) during 1988-1992 was investigated.
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