The Swedish species of Cidaphus (Hymenoptera, Ichneumonidae, Mesochorinae), a new genus and three new species for Sweden
Shaw, Mark R
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The ichneumonid genus Cidaphus Förster, 1869, and its three known European species Cidapus areolatus (Boie, 1850), C. alarius (Gravenhorst, 1829) and C. atricillus (Haliday, 1839) are reported as new to Sweden based primarily on specimens collected in light traps during projects monitoring nocturnal moths. The available material indicates that C. areolatus is a rather abundant and widespread species throughout most of the southern and central parts of Sweden. The trapping data indicates that it flies in one prolonged generation from July until October. Cidaphus atricillus and C. alarius are both rather rare and their distribution is much less clear, but both species appear to fly earlier in the season than C. areolatus.