Key to the Indian species of Foenatopus (After original descriptions and keys by Narendran et al. 2001 and Narendran & Sureshan 2003) 1. Ovipositor sheath distinctly shorter than body (Figs 3, 21, 23, 24, 25, 28, 30, 31, 32, 44)............................. 2 - Ovipositor sheath approx. as long as or distinctly longer than body (Figs 2, 4, 26, 27, 29, 55)........................ 15 2. Ovipositor sheath entirely black (Figs 3, 24, 30, 31, 32)....................................................... 3 - Ovipositor sheath with a distinct subapical ivory or whitish band, but band yellowish and ill-defined in F. rugiceps (21, 23, 25, 28, 44).............................................................................................. 8 3. Hind femur with 3 teeth ventrally; first metasomal tergite distinctly longer than remaining segments; [lower head ivory to white; pronotum with distinct transverse carinae and striae] (Fig. 3)................. F. anupam (Narendran & Sureshan) - Hind femur with 2 teeth ventrally; first metasomal tergite subequal or shorter than remaining segments................. 4 4. Vertex with 2 carinae between ocelli (Fig. 35); propodeum anteriorly alutaceous to imbricate (Fig. 36)...................................................................... F. sureshani Binoy, van Achterberg & Girish Kumar sp. nov. - Vertex with 3 or more carinae between ocelli; propodeum at least with scattered punctures anteriorly................... 5 5. Vertex with 3 carinae between ocelli; [vein SR1 of fore wing nearly twice as long as vein r]............. F. aequalis Elliott - Vertex with 4 or more carinae between ocelli............................................................... 6 6. Mesoscutum without a medio-longitudinal groove; scape twice as long as pedicel; [vertex with 4 carinae between ocelli]............................................................................ F. sudhae (Narendran & Sureshan) - Mesoscutum with a medio-longitudinal groove at least posteriorly; scape less than twice as long as pedicel.............. 7 7. Vertex at most with 3 carinae between ocelli; [ovipositor sheath more than 0.5× length of body in lateral view].......................................................................................... F. jodhpurensis Narendran - Vertex with 5 carinae between ocelli............................................. F. stom (Narendran & Sureshan) 8. Hind femur with 3 teeth ventrally........................................................................ 9 - Hind femur with 2 teeth ventrally (Fig. 52)................................................................ 12 9. Vertex with 2 carinae between ocelli; [central hind femoral tooth white].......................... F. bilineatus (Elliott) - Vertex with 3–4 carinae between ocelli................................................................... 10 10. Vertex with 3 carinae between ocelli; basal and central femoral teeth white, apical one black; [pale ring of ovipositor sheath yellowish].............................................................................. F. rugiceps Elliott - Vertex with 4 carinae between ocelli; all femoral teeth black.................................................. 11 11. Ovipositor sheath more than twice as long as metasoma; scape at most 1.25× as long as pedicel................................................................................................. F. priyae (Narendran & Sureshan) - Ovipositor sheath at most twice as long as metasoma; scape more than 1.5× as long as pedicel............................................................................................... F. keralensis (Narendran & Sureshan) 12. Stemmaticum near occiput with a distinct medio-longitudinal groove............... F. idukkiensis Sureshan & Narendran - Stemmaticum near occiput without medio-longitudinal groove................................................ 13 13. Ovipositor sheath shorter than metasoma.............................................. F. chinnarensis (Sureshan) - Ovipositor sheath distinctly longer than metasoma (Figs 21, 44)............................................... 14 14. Pronotum multicarinate; a longitudinal rufescent line down the centre of frons from apical tubercle to antennae; scutellum, deplanate, smooth and shiny; [vein SR1 of fore wing slightly longer than vein r (Fig. 21)]........... F. frontilinea (Morley) - Pronotum entirely coriaceous; frons medially black, without any such medial rufescent line; scutellum slightly convex, coriaceous.................................................................... F. weii Chen, van Achterberg & Xu 15. First metasomal tergite as long as or distinctly longer than remaining metasomal tergites combined................... 16 - First metasomal tergite shorter than remaining metasomal tergites combined..................................... 21 16. Ovipositor sheath 0.9–1.0× as long as body; hind femur with 2 large ventral teeth (Fig. 12).......................... 17 - Ovipositor sheath 1.3–1.5× longer than body; hind femur with 3 large ventral teeth................................ 19 17. Pterostigma approx. 9.0× longer than its maximum width; vein 2-CU1 present but much shorter than vein 1-CU1............................................................................................ F. indicus (Westwood) - Pterostigma 14.0–15.0× longer than its maximum width; vein 2-CU1 either present and longer than vein 1-CU1 or absent... .................................................................................................. 18 18. Whitish part of ovipositor sheath approx. 0.9× as long as apical black part of sheath; large ventral teeth of hind femur unequal, basal one nearly equilateral and apical one narrow, much longer than wide; vein 2-CU1 of fore wing absent......................................................................................... F. achterbergi Gupta & Gawas - Whitish part of ovipositor sheath approx. 1.6× as long as apical black part of sheath (Fig. 14); both large ventral teeth of hind femur equal; vein 2-CU1 of fore wing longer than vein 1-CU1 (Fig. 11)............................................................................................... F. chareshi Binoy, van Achterberg & Girish Kumar sp. nov. 19. Wings more or less infumate basally; occiput smooth; vertex with 3 carinae between ocelli........ F. longicaudalis (Elliott) - Wings hyaline; occiput distinctly rugose or striate; vertex with 2 carinae between ocelli............................. 20 20. Vein 2-CU1 of fore wing absent........................................................... F. iridipennis Elliott - Vein 2-CU1 of fore wing present, long................................................... F. maheshi Narendran 21. Vertex with 3 carinae in between ocelli; ovipositor sheath 3× as long as post petiolar segments............................................................................................. F. wynadensis (Sureshan & Narendran) - Vertex with 4–5 carinae between ocelli; ovipositor sheath 3.5× as long as post petiolar segments..... F. similicus Narendran

Published as part of Binoy, C., Achterberg, C. Van, Kumar, P. Girish, Santhosh, S. & Sheela, S., 2020, A review of Stephanidae (Hymenoptera: Stephanoidea) from India, with the description of five new species, pp. 1-51 in Zootaxa 4838 (1) on pages 4-5, DOI: 10.11646/zootaxa.4838.1.1, http://zenodo.org/record/4403367