Snapshot of the Hymenopteran fauna of Stora Karlsö

• Stora Karlsö is a small island close to Gotland in the Baltic Sea of which the Hymenopteranfauna has not been extensively studied before. In August 2014, a team of eight personscarried out an inventory of Hymenoptera, mainly the parasitoid wasps and sawflies, onthe island. Sampling was done with Malaise traps for a period of 22 days, complementedwith vegetation sweeping, branch shaking and opportunistic handpicking during a five daysojourn. As a result, about 200 species of parasitoid wasps and 14 sawflies are reported forStora Karlsö for the first time. Eleven species are reported as new to Sweden: The sawflyAthalia cornubiae Benson, 1931, the gasteruptiid Gasteruption opacum (Tournier, 1877),the diapriid Spilomicrus rufitarsis (Kieffer, 1911), the eulophid Entedonomphale bulgaricaBoyadzhiev & Triapitsyn, 2007, the braconids Bracon rozneri Papp, 1998 and Gnamptodondecoris (Förster, 1862), and the ichneumonids Bathythrix maculata (Hellén, 1957),Heterischnus filiformis (Gravenhorst, 1829), Lissonota picticoxis Schmiedeknecht, 1900,Mesochorus tipularius Gravenhorst, 1829, Ophion brevicornis Morley, 1915, and Plectochorusiwatensis (Uchida, 1928). Also the gasteruptiid Gasteruption opacum (Tournier,1877) is reported new to Sweden based on a record from inventory by NJ in 2013. Thisdemonstrates how the knowledge of Swedish biodiversity can be substantially augmentedby a short and intensive collecting expedition. We strongly recommend that other places inthe country be subjected to similar efforts.

Ämnesord

NATURVETENSKAP  -- Biologi -- Biologisk systematik (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences -- Biological Systematics (hsv//eng)

Nyckelord

island biodiversity

poorly known wasps

Diversity of life

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