Rhaconotini, Fahringer, 1928

Belokobylskij, Sergey A., Ku, Deok-Seo & Broad, Gavin R., 2021, The tribe Rhaconotini (Hymenoptera: Braconidae: Doryctinae) of South Korea with description of a new Rhaconotus Ruthe species, Zootaxa 5040 (3), pp. 404-413 : 411

Key to Korean genera and species of the tribe Rhaconotini

1. First metasomal tergite narrow and long, weakly widened posteriorly, subpetiolate; acrosternite of first metasomal segment distinctly elongate, about 0.5 × as long as tergite [ Platyspathius Viereck, 1911 —Notauli complete. Suture between second and third metasomal tergites with crenulation; second tergite mostly striate and with apical oval area. First flagellomere shorter than second]..................................................... Platyspathius hospitus Belokobylskij et Ku, 2001

- First metasomal tergite wide and relatively short, distinctly widened posteriorly, never petiolate; acrosternite of first metasomal segment not elongate, short, not more than 0.3 × as long as tergite.............................................. 2

2. Metasoma dorsally with only five visible tergites (following tergites hidden under fifth); fifth tergite longer than previous tergite [ Rhaconotus Ruthe, 1854 —Second metasomal tergite without basal area delineated posteriorly by furrow. Apical lenticular area of second tergite usually absent or sometimes present].................................................... 3

- Metasoma dorsally with more than five (with sixth and seventh) visible tergites; sixth or seventh tergites often not longer than previous tergite, but only sometimes longer................................................................ 6

3. Second tergite in posterior half with lenticular area distinctly delineated anteriorly by deep curved transverse furrow and posteriorly by second suture. Body length 2.9–3.4 mm ......... Rhaconotus (Rhaconotus) oriens Belokobylskij et Chen, 2004

- Second tergite in posterior half without delineated lenticular area, but rarely anteriorly with very shallow additional transverse depression.......................................................................................... 4

4. Pterostigma uniformly yellow. Mesoscutum widely covered by setae except narrow bare areas on lateral lobes. Fore wing hyaline, without dark spots or stripes. Body mainly light brown or light reddish brown. Body length 3.5–3.9 mm ...................................................................... Rhaconotus (Rhaconotus) testacea (Szepligeti, 1908)

- Pterostigma bicoloured, mainly brown. Mesoscutum with only narrow lines of setae along notauli and laterally. Fore wing with dark spots and stripes. Body mainly reddish-brown or dark reddish brown........................................ 5

5. Ovipositor of female short, not longer than metasoma and 0.4–0.5 × as long as fore wing. Antenna with 28–31 antennomeres. Length of first metasomal tergite 1.1–1.3 × apical width. Body length 2.0–4.0 mm............................................................................................. Rhaconotus (Rhaconotus) aciculatus Ruthe, 1854

- Ovipositor of female long, distinctly longer than metasoma and 0.8–0.9 × as long as fore wing ( Fig. 1A ). Antenna with 37–39 antennomeres ( Fig. 1A ). Length of first metasomal tergite 1.3–1.5 × apical width ( Fig. 2B ). Body length 4.1–5.4 mm ..................................................................... Rhaconotus (Rhaconotus) koreanus sp. nov.

6. Second tergite without delineated basal area. Vertex smooth. Hind femur of male not widened. [ Rhaconotinus Hedqvist, 1965 — Sixth metasomal tergite often not enlarged and not covered following tergites]. Body length 2.4–3.5 mm ........................................................ Rhaconotinus (Rhaconotinus) nadezhdae (Tobias et Belokobylskij, 1981)

- Second tergite with basal area delineated by furrow or different type of sculpture. Vertex granulate or reticulate-granulate. Hind femur of male distinctly widened. [ Ipodoryctes Granger, 1949 ]................................................. 7

7. Second metasomal tergite shorter, its length about 0.3 × anterior width. Body length 2.0– 3.7 mm ................................................................................. Ipodoryctes (Ipodoryctes) vagrans (Bridwell, 1920)

- Second metasomal tergite longer, its length 0.4–0.5 × anterior width. Body length 1.8–5.2 mm .............................................................................. Ipodoryctes (Ipodoryctes) formosanus (Watanabe, 1934)

Figures

FIGURE 1. Rhaconotus (Rhaconotus) koreanus, sp. nov. (holotype, female). A. Habitus, dorsal view. B. Head, lateral view. C. Head, front view. D. Head, dorsal view. E. Apical antennomeres. F. Basal antennomeres. G. Mesosoma, dorsal view. H. Mesosoma, lateral view. I. Coxa and femur of hind leg. J. Tibia of hind leg.

FIGURE 2. Rhaconotus (Rhaconotus) koreanus, sp. nov. (holotype, female). A. Wings. B. Metasoma, dorsal view. C. Metasoma, lateral view.