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Ewelina Motyka, Bogdan Wiśniowski and Katarzyna Szczepko

Abstract

The wild bees Andrena assimilis Radoszkowski, 1876, and Andrena gallica Schmiedeknecht, 1883, are morphologically very similar species and by some authors they are treated as one taxon – A. assimilis. Some other authors treat A. gallica as a subspecies of A. assimilis, others assert that both A. gallica and A. assimilis are valid species. After analysing the morphological features, we confirm that they should be treated as two distinct species. The following characters help to separate A. gallica from A. assimilis: in the case of females – the colouration of the stigma and veins in the forewing, in the case of males – the microsculpture of the surface of the metasomal terga, the punctation of terga II–III, and the width of the edeagus. Andrena gallica was reported in Poland in the first half of the twentieth century from the following regions: Baltic Coast, Kraków-Wieluń Upland, Małopolska Upland, and Wielkopolska-Kujawy Lowland. Due to the synonymy, these records were included in the distribution of A. assimilis. After more than 50 years, the occurrence of A. gallica in Poland has been confirmed. The new record of the species is reported based on the specimen collected in Kampinos National Park (Mazovian Lowland). In 2004, one male was collected on fallow land. Water pan-traps (Moericke traps) were used to do the collecting. Diagnoses of both species, data on their biology, as well as distribution, are provided.

Open access

Waldemar Celary and Bogdan Wiśniowski

Summary

The paper presents information on Stelis minima Schenck, 1859, a species of cleptoparasitic bee new to Polish fauna representing the family Megachilidae. Stelis minima. probably inhabits most of Europe except for the southern and northern parts of the continent. The species was also found in the southern part of Finland, where it reaches its northern range limit (ca. 62°N). During the years 2002- 2006 four specimens of S. minima were collected in the Kraków-Częstochowa Upland (1 male) and Roztocze region (2 females and 1 male). All specimens were observed close to nests of probable host species of solitary bees - Chelostoma campanularum (Kirby, 1802) and Heriades truncorum (Linnaeus, 1758). The female of Stelis minima can be distinguished from other Central European species by the following characteristics: rounded head, clypeus about 1.5 times wider than its length, legs black, hind basitarsus almost parallel sided (not broadened on the distal part), distances between punctures on mesopleurae ca. as big as their diameter, posterior margins of metasomal tergites (T) black and without lateral bands of hair, T1 or T1-2 with small, lateral, yellowish white maculae; the maculae are sometimes absent. The male Stelis minima can be separated from other Central European species by the following characteristics: clypeus short (not covering mandibles), legs black, distances between punctures on mesopleurae and tergites T4-5 ca. as big as their diameter, posterior margins of metasomal tergites black and without lateral bands of hair, T1-2 or T1-3 with small, lateral yellowish white maculae, posterior margin of seventh tergite with short mid-process, posterior margin of third sternite with triangular emargination in the middle, posterior margin of fourth sternite with a tooth-like, mid-process.

Open access

Ewelina Motyka, Bogdan Wiśniowski, Waldemar Celary and Katarzyna Szczepko

Abstract

The paper presents new records of the following six very rare or scarcely recorded species of short-tongued bees of the genus Andrena Fabricius, 1775 in Poland: A. (Notandrena) nitidiuscula Schenck, 1853; A. (Lepidandrena) pandellei Perez, 1895; A. (Lepidandrena) paucisquama Noskiewicz, 1924; A. (Notandrena) pontica Warncke, 1972; A. (Poecilandrena) potentillae Panzer, 1809 and A. (Poecilandrena) viridescens Viereck, 1916. The studies were based on museum collections as well as the author’s own collections. During the research approximately 21,000 specimens, representing 95 taxa, of mining bees of the genus Andrena from Poland were identified. The species discussed in the paper are known from single or just a few stands in the country. The following information is provided for each species: short diagnosis, remarks on general distribution, bionomics, published records from Poland and confirmed Polish records based on studied collections. The text is accompanied by SEM micrographs showing diagnostic characters and distribution maps.