Dolichomitus

Choi, Jin-Kyung, Kolarov, Janko, Jeong, Jong-Chul & Lee, Jong-Wook, 2016, A taxonomic review of the genus Dolichomitus Smith (Hymenoptera: Ichneumonidae: Pimplinae) from South Korea with descriptions of two new species, Zootaxa 4132 (2), pp. 235-253 : 236-237

Key to species of the genus Dolichomitus from South Korea

(modified from Mevi-Schütz et al., 2006 and Zwakhals, 2010)

1. Male............................................................................................... 2

- Female.............................................................................................. 6

2. Mid coxa with protuberance or tooth...................................................................... 3

- Mid coxa without protuberance or tooth.................................................................... 4

3. Fore femur in ventral view strongly widened. Mid coxa with very long and sharply pointed tooth (Fig. 30). Antenna with 30– 37 flagellomeres. Fore wing 12–20 mm ....................................... D. mesocentrus ( Gravenhorst, 1829)

- Fore femur in ventral view not strongly widened. Mid coxa with short, broad tooth and deep excavation on dorso-lateral part ( Fig. 9 ). Antenna with 31–37 flagellomeres. Fore wing 9–10 mm ......................... D. excavatus Zwakhals, 2010

4. Middle lobe of mesoscutum strongly produced in front so that dorsal and frontal (flat) surfaces form an angle less than 90º ( Fig. 15 ). Antenna with 26–27 flagellomeres. Fore wing 9.6 mm ........................... D. koreanus Lee & Choi sp. nov.

- Middle lobe of mesoscutum with normal shape.............................................................. 5

5. Lower tooth of mandible very long and broad, upper tooth very small (Fig. 31). Second tergite almost as long as wide. Meta- soma, including all surfaces of fifth tergite densely punctured and matt. Hind upper angle of pronotum black. Tegula fuscous to black......................................................................... D. mordator ( Aubert, 1965)

- Lower tooth not so long and broad, or both teeth equal in size. Other characters different............ Males of other species

6. Ovipositor sheath 3.5 × as long as fore wing. Antenna with 41 flagellomeres. Fore wing 22 mm. All coxae black......................................................................................... D. elongates ( Uchida, 1928)

- Ovipositor sheath less than 3.5 × as long as fore wing........................................................ 7

7. Dorsal lobe of lower valve of ovipositor with one or two grooves................................................ 8

- Dorsal lobe of lower valve of ovipositor with more than two grooves............................................ 13

8. Dorsal lobe of lower valve of ovipositor with two grooves. Metasoma reddish brown and second and third tergites with black apical band ( Fig. 29 ); fourth to sixth tergites with apico-lateral corners black. Legs yellowish orange................................................................................................ D. rufinus Lee & Choi sp. nov.

- Dorsal lobe of lower valve of ovipositor with one groove. Metasoma completely black............................... 9

9. Length of ovipositor divided by length of fore wing (Ov/fw) at least 2.0. Body length longer than 18 mm. Antenna with 33–38 flagellomeres. Fore wing 18.5 mm. All coxae reddish brown....................... D. imperator ( Kriechbaumer, 1854)

- Length of ovipositor divided by length of fore wing (Ov/fw) at most 1.7. Body length shorter than 17 mm .............. 10

10. Antenna with at most 27 flagellomeres. Fore coxa yellow..................................................... 11

- Antenna with at least 30 flagellomeres. Fore coxa brown to black.............................................. 12

11. Fore tibia with strong and thick setae on the middle of inside surface and distinctly on apical inner ridge (Fig. 32). Second terg- ite without oblique groove ( Fig. 20 ). Body length 10.9–13.5 mm. Antenna with 25–27 flagellomeres. Middle lobe of mesoscu- tum strongly produced in front so that dorsal and frontal (flat) surfaces form an angle less than 90º ( Fig. 15 ).......................................................................................... D. koreanus Lee & Choi sp. nov.

- Fore tibia with thin setae on the middle of inside surface and indistinctly on apical inner ridge (Fig. 33). Second tergite with oblique groove and elongated metasomal tergite. Body length 14–21 mm. Antenna with 21–25 flagellomeres. Middle lobe of mesoscutum with normal shape................................................... D. curticornis ( Perkins, 1943)

12. All coxae black. First sternite reaches spiracle of first tergite. Antenna with 31–38 flagellomeres. Fore wing 11.5 mm ......................................................................................... D. pterelas ( Say, 1829)

- Fore and mid coxae brown to reddish brown; hind coxa dark reddish brown. First sternite not reaching spiracle of first tergite. Antenna with 32 flagellomeres. Fore wing 16.5 mm ......................................... D. debilis Sheng, 2002

13. Upper hind corner of pronotum with yellow line. Antenna with 30 flagellomeres. Fore wing 12 mm. Second to fourth tergites almost squares.............................................................. D. kriechbaumeri ( Schulz, 1906)

- Upper hind corner of pronotum without yellow line or upper hind angle of pronotum only with yellow spot............. 14

14. Dorsal lobe with at least five grooves..................................................................... 15

- Dorsal lobe with three to four grooves.................................................................... 18

15. Prepectal carina extending to front edge of mesopleuron...................................................... 16

- Prepectal carina ending at lower edge of pronotum.......................................................... 17

16. Dorsal lobe with five grooves. Tarsomere 5 of hind tarsus as long as tarsomere 3. Antenna with 34 flagellomeres. Fore wing 21 mm ............................................................................. D. sericeus ( Hartig, 1847)

- Dorsal lobe with six to seven grooves. Tarsomere 5 of hind tarsus longer than tarsomere 3. Antenna with 37 flagellomeres. Fore wing 16 mm ........................................................... D. tuberculatus ( Geoffroy, 1785)

17. Median longitudinal carina of propodeum present as weak ridges and not well defined. Dorsal lobe with seven grooves. Antenna with 28 flagellomeres. Fore wing 8 mm ................................... .. D. populneus ( Ratzeburg, 1848)

- Median longitudinal carina of propodeum well defined. Dorsal lobe with five grooves. Antenna 28–35 flagellomeres. Fore wing 18 mm .................................................................. D. messor ( Gravenhorst, 1829)

18. Frons shiny with transverse wrinkles. Fore wing length less than 12 mm ......................................... 19

- Frons shiny and smooth. Fore wing length more than 13 mm .................................................. 20

19. Fore and mid coxae yellow. Median longitudinal carinae of propodeum strongly diverging. Dorsal lobe with four grooves. Antenna with 31 flagellomeres. Fore wing 11 mm ................................... D. diversicostae ( Perkins, 1943)

- All coxae black. Antenna with 30–31 flagellomeres. Fore wing 11 mm ................... .. D. nakamurai ( Uchida, 1928)

20. Antenna with 31–34 flagellomeres. Length of ovipositor: length of fore wing (Ov/fw) 1.90. Dorsal lobe with four grooves. Fore wing 15 mm .................................................................... D. dux ( Tschek, 1869)

- Antenna with 32–36 flagellomeres. Length of ovipositor: length of fore wing (Ov/fw) 1.67. Dorsal lobe with four grooves. Fore wing 13.5 mm .................................................................... D. fortis Sheng, 2002

Figures

FIGURES 8 – 11. Dolichomitus excavatus Zwakhals, (8) Scutellum and propodeum, (9) Mid coxa, (10) First to third tergites in dorsal view, (11) Wings. Scale bars (11): 1 mm, (8,10): 0.5 mm, (9): 0.2 mm.

FIGURES 12 – 20. Dolichomitus koreanus Lee & Choi sp. nov., (12) Habitus in dorsal view, (13) Head in frontal view, (14) Head in lateral view, (15) Head and mesoscutum in dorsal view, (16) Mesosoma in lateral view, (17) Tarsal claw, (18) Wings, (19) Scutellum and propodeum, (20) First to third tergites in dorsal view. Scale bars (12,18): 2 mm, (13 – 16, 19,20): 0.5 mm, (17): 0.2 mm.

FIGURES 21 – 29. Dolichomitus rufinus Lee & Choi sp. nov., (21) Habitus in lateral view, (22) Head in frontal view, (23) Head in lateral view, (24) Tarsal claw, (25) Mesosoma in lateral view, (26) Mesoscutum in dorsal view, (27) Scutellum and propodeum, (28) Fore wing, (29) First to third tergites in dorsal view. Scale bars (21,28): 2 mm, (25,29): 1 mm, (22,23,26,27): 0.5 mm, (24): 0.1 mm.