Review of the Palaearctic species of Ismaridae Thomson, 1858 (Hymenoptera: Diaprioidea) Author Kim, Chang-Jun Author Notton, David G. Author Ødegaard, Frode Author Lee, Jong-Wook text European Journal of Taxonomy 2018 417 1 38 journal article 30364 10.5852/ejt.2018.417 4ac60f8a-bbba-494e-b8ad-61bd8b85797c 1211284 D5FDAA4D-D103-46E0-A65A-F0D27B77468F Identification key to Palaearctic species of Ismarus Haliday, 1835 Females The female of I . brevis sp. nov. is unknown. 1. Body mainly pale yellowish to yellow, except at least mesoscutum, scutellum black ( Fig. 1B ) …… …………………………………………………………………… Ismarus dorsiger (Haliday, 1831) ̅ Body mainly dark brown or black ( Fig. 1A, C ̅G) …………………………………………………2 2. Posterior part of scutellum finely coriaceous or rugose ( Fig. 4D–E ) ………………………………3 ̅ Posterior part of scutellum smooth, sculptureless ( Figs 5D , 6C , 7D ) ………………………………4 3. Antenna uniformly brown to dark brown ( Fig. 1E ); posterior part of scutellum coriaceous; mesopleuron coriaceous-rugulose; metasoma deeply scaly-reticulate ……………………………… …………………………………………………………………… Ismarus rugulosus Förster, 1850 ̅ Antenna uniformly bright yellow except for apical segment brownish ( Fig. 4A, D ); posterior part of scutellum rugose ( Fig. 4D–E ); mesopleuron smooth ( Fig. 4A ); metasoma weakly rugulose ( Fig. 4A, D ) ………………………………………… Ismarus distinctus Kim, Notton & Ødegaard sp. nov. 4. Scutellum truncate posteriorly, with hind margin straight ( Fig. 7D ); hind tibia abruptly swollen ( Fig. 7B ) …………………………………………………… Ismarus tripotini Kim & Lee sp. nov. ̅ Scutellum rounded posteriorly ( Figs 5D , 6C ); hind tibia gradually swollen ( Fig. 5B , 6A ) …………5 5. Mesopleuron with a continuous zone of sculpture extending from its anteroventral corner up to meso-metapleural suture ( Figs 1I , 6D ) ……………………………………………………………6 ̅ Mesopleuron without a continuous zone of sculpture ( Figs 1H , 5B ) ……………………………7 6. Antenna uniformly yellow ( Fig. 1G ); mesopleuron with deep longitudinal wrinkles ( Fig. 1I ); base of second tergite with long median furrow, extending to ¾ of segment …………………… ……………………………………………………………… Ismarus flavicornis ( Thomson, 1858 ) ̅ Antenna not uniformly yellow ( Fig. 6A ); mesopleuron with deep punctures to short irregular wrinkles ( Fig. 6D ); base of second tergite with short median furrow, extending 0.4̅0.5 × length of tergite ( Fig. 6E ) ……………………………………… Ismarus similis Kim, Notton & Lee sp. nov. 7. Notauli with 5̅8 pits; posterior half of S6 yellow …… Ismarus multiporus Kolyada & Chemyreva ̅ Notauli with 1̅2 pits; only margin of S6 yellow …………………………………………………8 8. Antenna uniformly bright yellowish or only A15 brown ( Fig. 1A, F ) ……………………………9 ̅ Antenna not bright yellow, variable ( Figs 1C ̅D, 5A) …………………………………………10 9. Antenna uniformly bright yellowish ( Fig. 1F ); anterior scutellar pit with median keel; radial cell as long as length of marginal vein ( Fig. 1F ); A7̅A14 subquadrate ………………………… ……………………………………………………… Ismarus spinalis Kolyada & Chemyreva, 2016 ̅ Antenna bright yellow, except A15 brown ( Fig. 1A ); anterior scutellar pit without median keel; radial cell 0.8 × length of marginal vein ( Fig. 1A ); A7̅A14 elongate ……………………………… ……………………………………………………… Ismarus apicalis Kolyada & Chemyreva, 2016 10. POL much longer than OOL ( Fig. 5C ) …………………… Ismarus excavatus Kim & Lee sp. nov. ̅ POL slightly longer or as long as OOL ……………………………………………………………11 11. A4 as long as A1, slightly shorter than A3 ( Fig. 1D ) ……………… Ismarus grandis Alekseev, 1978 ̅ A4 shorter than A1 and A3 ( Fig. 1C ) ……………………………… Ismarus halidayi Förster, 1850 Males The males of I . similis sp. nov. and I . tripotini sp. nov. are unknown. 1. A3 and A4 with keels ( Fig. 2H ) …………………… Ismarus spinalis Kolyada & Chemyreva, 2016 ̅ A3 without keel, keel on A4 extending at least to ¾ of segment ( Figs 3A , 4B , 5E ) ………………2 2. Posterior part of scutellum finely coriaceous or punctate-rugose …………………………………3 ̅ Posterior part of scutellum smooth, sculptureless ( Figs 3D , 6C ) ……………………………………4 3. Posterior part of scutellum coriaceous; mesopleuron coriaceous-rugulose; metasoma deeply scaly-reticulate ………………………………………………… Ismarus rugulosus Förster, 1850 ̅ Posterior part of scutellum punctate-rugose ( Fig. 4D–E ); mesopleuron smooth ( Fig. 4A ); metasoma weakly rugulose ( Fig. 4D–E ) …… Ismarus distinctus Kim, Notton & Ødegaard sp. nov. 4. Mandibles white; notauli absent ……………………………… Ismarus dorsiger (Haliday, 1831) ̅ Mandibles black; notauli present ………………………………………………………………… 5 5. Mesopleuron with a continuous zone of sculpture extending from its anteroventral corner up to meso-metapleural suture ( Fig. 2C ) ………………………… Ismarus flavicornis ( Thomson, 1858 ) ̅ Mesopleuron without a continuous zone of sculpture ( Figs 2A, D ̅F, 3B, 5F) ……………………6 6. Radial cell shorter than marginal vein ( Fig. 2A ) …… Ismarus apicalis Kolyada & Chemyreva, 2016 ̅ Radial cell as long as marginal vein ( Figs 2D ̅F, 3B, 5F) …………………………………………7 7. Notauli with 5̅8 pits ………………………… Ismarus multiporus Kolyada & Chemyreva, 2016 ̅ Notauli with 1̅2 pits ( Figs 3D ) ……………………………………………………………………8 8. A3 shorter than A4 ( Fig. 5F ) ………………………………………………………………………9 ̅ A3 as long as or slightly longer than A4 ( Fig. 3A ) …………………………………………………10 9. POL as long as OOL; antennal segments distinctly elongate, at least 2.0 × width of each segment ( Fig. 2D ); A4 as long as A1 ( Fig. 2D ); A4 slightly excavate ( Fig. 2D ); base of second tergite with long median furrow, at least to ¾ of segment …………… Ismarus grandis Alekseev, 1978 ̅ POL longer than OOL; antennal segments not distinctly elongate, A5̅A13 only slightly longer than wide ( Fig. 2E ); A4 shorter than A1 ( Fig. 5F ); A4 distinctly excavate ( Fig. 5F ); base of second tergite with short median furrow, extending 0.4 × length of tergite … Ismarus excavatus Kim & Lee sp. nov. 10. POL longer than OOL ( Fig. 3C ); A7̅A13 quadrate, as long as wide each segment ( Fig. 3A ); notauli present anteriorly as large pits ( Fig. 3D ) ……………………… Ismarus brevis Kim & Lee sp. nov. ̅ POL as long as OOL; A7̅A13 longer than wide each segment ( Fig. 2E ); notauli present anteriorly, as oblique, elongate pits …………………………………………… Ismarus halidayi Förster, 1850