Cordilura nubilosa, Ozerov & Krivosheina, 2020

Ozerov, A. L. & Krivosheina, M. G., 2020, A review of the genus Cordilura Fallén, 1810 (Diptera: Scathophagidae) of Russia, Russian Entomological Journal 29 (4), pp. 439-480 : 478-479

KEY TO THE SPECIES OF CORDILURA FALLÉN OF RUSSIA

1. Scutellum with a pair of strong discal and a pair of strong apical setae (e. g., Fig. 13) ............................................ 2

— Scutellum with a pair of strong discal setae only; apical scutellar setae as setulae or absent (e. g., Fig. 12) ...... 15

2. Palpus yellow .................................................................. 3

— Palpus black or dark brown ........................................... 4

3. Arista plumose, the longest hairs approximately equal to the width of postpedicel. Frontal vitta yellow. Male sternite 5, epandrium and surstyli as in Figs 84–86 ............ ...................................................... C. picticornis (Loew)

— Arista nearly bare ( Fig. 5 ). Frontal vitta black. Apex of wing usually darkened. Male sternite 5, epandrium and surstyli as in Figs 128–130...... C. ustulata (Zetterstedt)

4. Postpedicel with 1–2 additional long setae externally from plumose arista ( Fig. 6 ). Male sternite 5, epandrium and surstyli as in Figs 45–47 ........... C. ciliata (Meigen)

— Postpedicel without additional setae ............................. 5

5. Legs, including tarsi black completely. Male sternite 5, epandrium and surstyli as in Figs 39–41 ....................... ..................................................... C. atrata (Zetterstedt)

— At least fore tibiae and tarsi yellow ............................... 6

6. Tarsomeres 2–4 darkened basally of at least the fore leg (e. g., Fig. 11) ................................................................ 7

— Tarsi ventrally unicolor, yellow or brownish ................ 8

7. Arista pubescent, the longest hairs approximately equal to 1/3–1/2 width of postpedicel ( Fig. 4 ). Male sternite 5, epandrium and surstyli as in Figs 27–29 ....................... .......................................................... C. aemula (Collin)

— Arista plumose, the longest hairs approximately equal to the width of postpedicel ( Fig. 3 ). Male sternite 5, epandrium and surstyli as in Figs 104–106........................... ......................................................... C. rufipes (Meigen)

8. Arista plumose or pubescent, longest hairs exceeding greatest diameter of arista (e. g., Figs 3, 4, 6 ) .............. 9

— Arista nearly bare, longest hairs not exceeding greatest diameter of arista (e. g., Fig. 5 ) ................................... 12

9. Scutum with 2 postsutural intra-alar setae; presutural acrostichal hairs present ............................................. 10

— Scutum with 1 postsutural intra-alar seta only; presutural acrostichal hairs absent. Male sternite 5, epandrium and surstyli as in Figs 24–26 .............. C. aberrans (Becker)

10. Presutural intra-alar seta present. Hind tibia yellow ...... 11

— Presutural intra-alar seta absent. Hind tibia black or dark brown. Male sternite 5, epandrium and surstyli as in Figs 101–103.............................. C. rufimana (Meigen)

11. Tarsi ventrally yellow. Male sternite 5, epandrium and surstyli as in Figs 90–92................. C. pudica (Meigen)

— Tarsi ventrally dark brown ( Fig. 10). Male sternite 5, epandrium and surstyli as in Figs 69–71 ....................... ......................... C. monochroma Ozerov et Krivosheina

12. Legs shining. Frontal vitta yellow .............................. 13

— Legs greyish dusted. Frontal vitta dark brown. Male sternite 5, epandrium and surstyli as in Figs 122–124.. ........................................................... C. socialis Becker

13. 3 orbital setae present ................................................. 14

— 2 orbital setae present. Male sternite 5, epandrium and surstyli as in Figs 54–56................... C. grunini Ozerov

14. Male sternite 5, epandrium and surstyli as in Figs 48–50 ........................................................ C. fulvifrons Ozerov

— Male sternite 5, epandrium and surstyli as in Figs 87–89........................................... C. proboscidea (Zetterstedt)

15. Arista plumose or pubescent, longest hairs exceeding greatest diameter of arista (e. g., Figs 3, 4, 6 ) ............ 16

— Arista nearly bare, longest hairs not exceeding greatest diameter of arista (e. g., Fig. 5 ) ................................... 30

16. Fore coxa black ........................................................... 17

— Fore coxa white or yellowish ....................................... 21

17. Presutural supra-alar seta usually absent or setulose; intra-alar setae absent. Vein R 1 bare on apical third of dorsal surface. Male sternite 5, epandrium and surstyli as in Figs 60–62 ........................ C. kakaberrans Ozerov

— Presutural supra-alar seta present; (0–1)+(1–2) intra-alar setae present. Vein R 1 setulose on apical third of dorsal surface (e. g., Fig. 19) .................................................. 18

18. Tibiae and tarsi of all legs yellow .............................. 19

— Tibiae and tarsi of all legs black. Male sternite 5, epandrium and surstyli as in Figs 81–83 .................................... ......................................................... C. picipes (Meigen)

19. Presutural acrostichal hairs present ............................ 20

— Presutural acrostichal hairs absent. Male sternite 5, epandrium and surstyli as in Figs 63–65 ............................... ............................... C. kosterini Ozerov et Krivosheina

20. Male sternite 5, epandrium and surstyli as in Figs 107– 109............................................ C. sagittifera Gorodkov

— Male sternite 5, epandrium and surstyli as in Figs 57–59...................................................... C. impudica Rondani

— Male sternite 5, epandrium and surstyli as in Figs 113– 115 ................................................ C. sibirica Gorodkov

21. Mid and hind femora bicolor: black in apical part and yellow in basal half or third. Male sternite 5, epandrium and surstyli as in Figs 42–44 ...... C. bicoloripes Ozerov

— Mid and hind femora yellow completely (sometimes darkened dorsally) or black completely .................... 22

22. Femora of all legs yellow ........................................... 23

— Femora of all legs black ............................................... 28

23. Postpedicel bicolor: yellow basally and blackish in apical part. Male sternite 5, epandrium and surstyli as in Figs 51–53............................... C. fuscipes (Zetterstedt)

— Postpedicel unicolor: completely yellow, black or dark brown .......................................................................... 24

24. Postpedicel yellow, approximately 1.5–2 times as long as wide ......................................................................... 25

— Postpedicel black, approximately 3–3.5 times as long as wide ( Fig. 7 ). Male sternite 5, epandrium and surstyli as in Figs 30–32 .......................... C. albilabris (Fabricius)

25. Thorax black completely. Male sternite 5, epandrium and surstyli as in Figs 98–100........................................ ............................... C. richterae Ozerov et Krivosheina

— Thorax with pleural sclerites mostly or completely pale yellow .......................................................................... 26

26. Wing with a distinct brown spot or shadow apically (e. g., Fig. 20) .............................................................. 27

— Wing tinged with brownish, but without a distinct brown spot or shadow apically. Male sternite 5, epandrium and surstyli as in Figs 33–35 .................. C. albipes (Fallén)

27. Male sternite 5, epandrium and surstyli as in Figs 75–77 .................................................. C. nubecula (Sasakawa)

— Male sternite 5, epandrium and surstyli as in Figs 116– 118 ....................... C. sidorenkoi Ozerov et Krivosheina

— Male sternite 5, epandrium and surstyli as in Figs 110– 112................................................. C. shatalkini Ozerov

— Epandrium and surstyli as in Figs 96, 97........................ ............................................................ C. remota Ozerov

28. Scutum with 1 postpronotal seta ................................ 29

— Scutum with 2 postpronotal setae. Male sternite 5, epandrium and surstyli as in Figs 131–133 ........................... ..................................................... C. zaitzevi Gorodkov

29. Femora subshining. Male sternite 5, epandrium and surstyli as in Figs 93–95........................... C. remmi Elberg

— Femora grey dusted. Male sternite 5, epandrium and surstyli as in Figs 72–74 ................................................. .............................. C. negrobovi Ozerov et Krivosheina

30. Postpedicel yellow completely or blackish in apical half on the outside only...................................................... 31

— Postpedicel blackish completely .................................. 34

31. Vein R 2+3 with a brown spot apically, intersection of vein M and crossvein dm-cu with a brown spot, apex of wing darkened ( Fig. 18). Hind tibia with apical ventral seta ... ............................ C. nartshukae Ozerov et Krivosheina

— Wing clear, without dark spots. Hind tibia without apical ventral seta .................................................................. 32

32. Postpedicel yellow basally and blackish in apical half on the outside. Frontal vitta yellow apically and blackish basally. Scutum black in male and yellow with blackish stripes distally from each dorsocentral line in female. Male sternite 5, epandrium and surstyli as in Figs 66–68 ............................................................ C. krocha Ozerov

— Postpedicel and frontal vitta yellow completely ......... 33

33. Scutum reddish yellow, with blackish stripes distally from each dorsocentral line. 2 postsutural intra-alar setae present. Male sternite 5, epandrium and surstyli as in Figs 119–121 ...................................... C. sifneri Ozerov

— Scutum reddish yellow, unicolor. Postsutural intra-alar setae absent ................... C. amurensis Ozerov (female)

34. 1 postpronotal seta present. Scutum unicolor: reddish yellow or blackish ....................................................... 35

— 2 postpronotal setae present. Scutum reddish yellow, with blackish stripes distally from each dorsocentral line. Male sternite 5, epandrium and surstyli as in Figs 125– 127................................................ C. tartariana Ozerov

35. Scutum reddish yellow. Male sternite 5, epandrium and surstyli as in Figs 36–38 ..... C. amurensis Ozerov (male)

— Scutum blackish. Male sternite 5, epandrium and surstyli as in Figs 78–80 .................... Cordilura nubilosa , sp.n.

Acknowledgements. We are very grateful to Dr. Olga Ovchinnikova and Mrs. Galina Suleymanova for the help during our work in ZISP with the material of Cordilura . We are grateful to Dmitry I. Gavryushin (Moscow) for the photos of adults Cordilura rufipes (Meigen) and Cordilura picipes (Meigen) .

The investigation was fulfilled within the state project No AAAA-A18-118042490060-1 (M.G. Krivosheina) and the state project No AAA-A15-116021660077-3 (A.L. Ozerov).

Figures

Figs 78–86. Cordilura nubilosa sp.n. (78–80), C. picipes (Meigen) (81–83) and C. picticornis (Loew) (84–86): 78, 81, 84 — male sternite 5; 79, 82, 85 — epandrium and surstyli, lateral view; 80, 83, 86 — same, dorsal view. Рис. 78–86. Cordilura nubilosa sp.n. (78–80), C. picipes (Meigen) (81–83) и C. picticornis (Loew) (84–86): 78, 81, 84 — стернит 5 самца; 79, 82, 85 — Эпандрий и сурстили, сбоку; 80, 83, 86 — то же, сверху.

Figs 3–9. Cordilura spp.: 3 — antenna of C. rufipes (Meigen), lateral view; 4 — same of C. aemula (Collin); 5 — same of C. ustulata (Zetterstedt); 6 — same of C. ciliata (Meigen); 7 — head of C. albilabris (Fabricius), lateral view; 8 — palpus of C.remmi (Elberg); 16 — same of C. sifneri Ozerov. Рис. 3–9. Cordilura spp.: 3 — усик C. rufipes (Meigen), сбоку; 4 — то же у C. aemula (Collin); 5 — то же у C. ustulata (Zetterstedt); 6 — то же у C. ciliata (Meigen); 7 — голова C. albilabris (Fabricius), сбоку; 8 — Щупик C.remmi (Elberg); 16 — то же у C. sifneri Ozerov.

Figs 33–41. Cordilura albipes (Fallén) (33–35), C. amurensis Ozerov (36–38) and C. atrata (Zetterstedt) (39–41): 33, 36, 39 — male sternite 5; 34, 37, 40 — epandrium and surstyli, lateral view; 35, 38, 41 — same, dorsal view. Рис. 33–41. Cordilura albipes (Fallén) (33–35), C. amurensis Ozerov (36–38) и C. atrata (Zetterstedt) (39–41): 33, 36, 39 — стернит 5 самца; 34, 37, 40 — Эпандрий и сурстили, сбоку; 35, 38, 41 — то же, сверху.

Figs 24–32. Cordilura aberrans (Becker) (24–26), C. aemula (Collin) (27–29) and C. albilabris (Fabricius) (30–32): 24, 27, 30 — male sternite 5; 25, 28, 31 — epandrium and surstyli, lateral view; 26, 29, 32 — same, dorsal view. Рис. 24–32. Cordilura aberrans (Becker) (24–26), C. aemula (Collin) (27–29) и C. albilabris (Fabricius) (30–32): 24, 27, 30 — стернит 5 самца; 25, 28, 31 — Эпандрий и сурстили, сбоку; 26, 29, 32 — то же, сверху.

Figs 69–77. Cordilura monochroma Ozerov et Krivosheina (69–71), C. negrobovi Ozerov et Krivosheina (72–74) and C. nubecula Sasakawa (75–77): 69, 72, 75 — male sternite 5; 70, 73, 76 — epandrium and surstyli, lateral view; 71, 74, 77 — same, dorsal view. 69– 71 — after Ozerov & Krivosheina, 2014, figs 16, 18, 19; 72–74 — after Ozerov & Krivosheina, 2017, figs 7–9; 75–77 — after Ozerov & Krivosheina, 2012b, figs 5, 7, 8. Рис. 69–77. Cordilura monochroma Ozerov et Krivosheina (69–71), C. negrobovi Ozerov et Krivosheina (72–74) и C. nubecula Sasakawa (75–77): 69, 72, 75 — стернит 5 самца; 70, 73, 76 — Эпандрий и сурстили, сбоку; 71, 74, 77 — то же, сверху. 69–71 — по Ozerov & Krivosheina, 2014, figs 16, 18, 19; 72–74 — по Ozerov & Krivosheina, 2017, figs 7–9; 75–77 — по Ozerov & Krivosheina, 2012b, figs 5, 7, 8.

Figs 60–68. Cordilura kakaberrans Ozerov (60–62), C. kosterini Ozerov et Krivosheina (63–65) and C. krocha Ozerov (66–68): 60, 63, 66 — male sternite 5; 61, 64, 67 — epandrium and surstyli, lateral view; 62, 65, 68 — same, dorsal view. 63–65 — after Ozerov & Krivosheina, 2014, figs 10–12. Рис. 60–68. Cordilura kakaberrans Ozerov (60–62), C. kosterini Ozerov et Krivosheina (63–65) и C. krocha Ozerov (66–68): 60, 63, 66 — стернит 5 самца; 61, 64, 67 — Эпандрий и сурстили, сбоку; 62, 65, 68 — то же, сверху. 63–65 — по Ozerov & Krivosheina, 2014, figs 10–12.

Figs 131–133. Cordilura zaitzevi Gorodkov: 131 — male sternite 5; 132 — epandrium and surstyli, lateral view; 133 — same, dorsal view. Рис. 131–133. Cordilura zaitzevi Gorodkov: 131 — стернит 5 самца; 132 — Эпандрий и сурстили, сбоку; 133 — то же, сверху.