Abstract
The Palaearctic species of Ismaridae Thomson, 1858 are reviewed. Thirteen species of Ismaridae are recognized from the Palaearctic. Five species are described as new: Ismarus brevis Kim & Lee sp. nov. from the Russian Far East and South Korea; I. distinctus Kim, Notton & Ødegaard sp. nov. from Norway and the United Kingdom; I. excavatus Kim & Lee sp. nov. from China, Japan and South Korea; I. similis Kim, Notton & Lee sp. nov. from the United Kingdom and I. tripotini Kim & Lee sp. nov. from South Korea. Ismarus apicalis Kolyada & Chemyreva, 2016 is newly recorded from China, France, Japan and South Korea; I. dorsiger (Haliday, 1831) from France, Montenegro, Norway, South Korea and Switzerland; I. flavicornis (Thomson, 1858) from Bulgaria and Norway; I. grandis Alekseev, 1978, I. halidayi Förster, 1850 and I. multiporus Kolyada & Chemyreva from Japan and South Korea; I. rugulosus Förster, 1850 from Austria and I. spinalis Kolyada & Chemyreva, 2016 from China, Japan and South Korea. An identification key to all species found in the Palaearctic region is presented.
Highlights
Ismaridae Thomson, 1858, a monotypic family of superfamily Diaprioidea Haliday, 1833 has been previously reported from all zoogeographical regions except the Ethiopian and Malagasy and 38 species have been described (Johnson 1992; Liu et al 2011; Kolyada & Chemyreva 2016; Comério et al 2016; various contributors 2016)
Five species are described as new: Ismarus brevis Kim & Lee sp. nov. from the Russian Far East and South Korea; I. distinctus Kim, Notton & Ødegaard sp. nov. from Norway and the United Kingdom; I. excavatus Kim & Lee sp. nov. from China, Japan and South Korea; I. similis Kim, Notton & Lee sp. nov. from the United Kingdom and I. tripotini Kim & Lee sp. nov. from South Korea
Knowledge of the composition of Palaearctic Hymenoptera fauna is essential for the purposes of biological studies requiring accurate identifications, and their applications, including conservation of native species, and the monitoring of faunal change
Summary
Ismaridae Thomson, 1858, a monotypic family of superfamily Diaprioidea Haliday, 1833 has been previously reported from all zoogeographical regions except the Ethiopian and Malagasy and 38 species have been described (Johnson 1992; Liu et al 2011; Kolyada & Chemyreva 2016; Comério et al 2016; various contributors 2016). Available host data show that species of Ismaridae are hyperparasitoids of planthoppers (Hemiptera Linnaeus, 1758, Auchenorrhyncha Duméril, 1806) via Dryinidae Haliday, 1833 (Hymenoptera Linnaeus, 1758: Chrysidoidea Latreille, 1802) (Chambers 1955, 1981; Nixon 1957; Wall 1967; Kozlov 1971; Masner 1976; Jervis 1979; Tussac & Tussac 1991; Olmi 2000). Since Ismaridae can be parasitoids of beneficial dryinids, so Ismaridae may potentially be detrimental for biological control
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