Leiodes, : HATCH, 1929

Hoshina, Hideto, 2012, Review of the tribes Sogdini and Leiodini from Japan and North Chishima Islands. Part II. Genera Hydnobius and Leiodes (Coleoptera: Leiodidae), Acta Entomologica Musei Nationalis Pragae (suppl. 1) 52, pp. 1-168 : 19-23

publication ID

https://doi.org/ 10.5281/zenodo.4272467

DOI

https://doi.org/10.5281/zenodo.4339390

persistent identifier

https://treatment.plazi.org/id/03E98224-3216-0773-77A4-46DCFBC2A788

treatment provided by

Felipe

scientific name

Leiodes
status

 

Key to species of Leiodes View in CoL in Japan and North Chishima Islands

Important morphological characters useful for the identification of species in Japan and North Chishima Islands are also listed in Table 1 View Table 1 on pp. 16–17.

1. Elytra densely and strongly punctate between rows of punctures, superficially appearing not to bear punctural series (e.g., Figs. 16A View Fig , 39A View Fig ). ...................................................... 2

– Elytra with ordered rows of punctures; most punctures between rows smaller than serial punctures (e.g., Fig. 27A View Fig ), or punctures between rows almost absent ( Fig. 85A View Fig ). ..... 12

2. Median carina of mesoventrite clearly projecting ventrally in lateral view near a transverse carina ( Fig. 70E View Fig ). Shikoku. ....................................................... 23. L. akiyamai View in CoL sp. nov.

– Median carina low and not projecting ventrally (e.g., Figs. 7E View Fig , 16F View Fig ). ......................... 3

3. Mesoventrite without excavations between median carina and transverse carina ( Figs. 16F View Fig , 19F View Fig , 21E View Fig , 24F View Fig ); male mesotibia strongly protuberant at interoapical corners ( Figs. 17C View Fig , 20B View Fig , 22C View Fig , 25C View Fig ). .................................................................................................... 4

– Mesoventrite with one distinct excavation between median carina and transverse carina ( Figs. 39E View Fig , 42E View Fig , 44E View Fig , 47H View Fig , 50H View Fig , 53F View Fig ); mesotibia simply slender in both sexes and not showing sexual dimorphism. ......................................................................................... 7

4. Elytra not transversely strigose. .................................................................................... 5

– Elytra transversely strigose ( Figs. 16E View Fig , 24E View Fig ). ............................................................... 6

5. Elytra almost unicolor, brown; male metafemur with an inwardly curved dorsal projection posteroapically ( Fig. 22I View Fig ). Hokkaido. ........................................... 6. L. yasudai View in CoL sp. nov.

– Elytra brown with dark brown stripes ( Fig. 19C View Fig ); male metafemur with a small posteroapical projection ( Fig. 20E View Fig ). Hokkaido (Rishiri Is.)...........................5. L. juzoi View in CoL sp. nov .

6. Body ca. 1.8× as long as wide ( Fig. 24A View Fig ); head and pronotum dark brown; basal half of parameres relatively slender in lateral view ( Fig. 26B View Fig ). Hokkaido. ................................. .................................................................................................. 7. L. yoshitakei View in CoL sp. nov.

– Body ca. 1.6× as long as wide ( Fig. 16A View Fig ); head and pronotum brown; basal half of parameres relatively thick in lateral view ( Fig. 18B View Fig ) Honshu, Shikoku, Kyushu. .................. ............................................................................................ 4. L. circinipes ( Rye, 1873) View in CoL

7. Antenna almost unicolor, brown. Honshu. ...................................... 12. L. araii View in CoL sp. nov.

– Antennomeres 7 and 9–11 dark reddish brown or dark brown, darker than remaining antennomeres. ................................................................................................................ 8

8. Head relatively large, ca. 0.62× as long as pronotum ( Fig. 42A View Fig ). Shikoku...................... .................................................................................................... 13. L. haradai View in CoL sp. nov.

– Head relatively small, less than 0.60× as long as pronotum ( Figs. 44A View Fig , 47A View Fig , 50A View Fig , 53A View Fig ). .............................................................................................................................. 9

9. Metafemur relatively slender, with a narrow but distinct ventral rectangular projection posteroapically in males ( Figs. 45B, 45C View Fig , 54B View Fig ) (females unknown)..........................10

– Metafemur relatively robust and weakly expanded posteroapically in both sexes ( Figs. 48E, 48F View Fig , 51C, 51D, 51E, 51F View Fig ). ................................................................................... 11

10. Body ca. 1.7× as long as wide ( Fig. 44A View Fig ); aedeagus broadly but irregularly rounded at apex in dorsal view ( Fig. 46A View Fig ). Honshu.....................................14. L. hijikatai View in CoL sp. nov.

– Body ca. 2.1× as long as wide ( Fig. 53A View Fig ); aedeagus acuminate, nearly triangular at apex in dorsal view ( Fig. 54F View Fig ). Shikoku.................................................17. L. sakaii View in CoL sp. nov.

11. Body ca. 1.9× as long as wide ( Fig. 50A View Fig ); metaventrite sparsely pubescent in both sexes; median lobe of aedeagus bluntly pointed apically in dorsal view ( Fig. 52A View Fig ). Honshu, Shikoku. ..................................................................... 16. L. multipunctata ( Rye, 1873)

– Body ca. 1.7× as long as wide ( Fig. 47A View Fig ); metaventrite densely pubescent in male ( Fig. 48A View Fig ), sparsely pubescent in female ( Fig. 48B View Fig ); median lobe of aedeagus rectangular apically and with a tiny but distinct projection in dorsal view ( Fig. 49A View Fig ). Honshu, Shikoku. ............................................................................................ 15. L. kiuchii View in CoL sp. nov.

12. Antennomere 11 sharply curved in lateral view ( Fig. 85D View Fig ). Ryukyus. ............................ ........................................................................................................ 29. L. ohtai View in CoL sp. nov.

– Antennomere 11 simply oval. ..................................................................................... 13

13. Elytra transversely strigose ( Fig. 98G View Fig ). Hokkaido. ................ 34. L. shigehisai View in CoL sp. nov.

– Elytra not transversely strigose. .................................................................................. 14

14. Elytra bicolored ( Figs. 55C, 55D View Fig , 58C, 58D View Fig , 82D View Fig , 87C, 87D View Fig , 93D, 93E, 93F, 93G View Fig ).......................................................................................................................................15

– Elytra unicolor. ............................................................................................................ 19

15. Body cylindrical ( Fig. 87A View Fig ); mesoventrite with one distinct excavation between median carina and transverse carina ( Fig. 87I View Fig ). Honshu..................30. L. osawai Nakane, 1963 View in CoL

– Body oval or elongate oval; mesoventrite without excavations between median carina and transverse carina ( Figs. 55G View Fig , 58G View Fig , 82G View Fig , 93J View Fig ). ..................................................... 16

16. Elytra without dark stripes along lateral margins ( Figs. 82D View Fig , 93D, 93E, 93F, 93G View Fig ). .... 17

– Elytra with black or dark brown stripes along lateral margins ( Figs. 55C, 55D View Fig , 58C, 58D View Fig ). ............................................................................................................................ 18

17. Body elongate oval, body length 2.4–4.0 mm (but usually less than 3 mm); male metatibiae very weakly curved inwards ( Figs. 94C, 94D View Fig ); median lobe of aedeagus triangular at apex in dorsal view ( Fig. 95A View Fig ). South Chishima Islands , Hokkaido, Honshu. .......................................................................32. L. irregularis Portevin, 1927 View in CoL (bicolored type)

– Body oval, body length 3.0–4.0 mm; male metatibiae distinctly curved inwards ( Figs. 83C, 83D View Fig ); median lobe of aedeagus rounded at apex in dorsal view ( Fig. 84A View Fig ). South Chishima Islands , Hokkaido. .................. 28. L. obesa (Seidlitz, 1841) View in CoL (bicolored type)

18. Elytra with relatively large black spots ( Figs. 58C, 58D View Fig ); each paramere of aedeagus bearing a small transparent lobe ( Fig. 60A View Fig ). Ryukyus (Yonaguni Island). ...................... ..................................................................................................... 19. L. shuheii View in CoL sp. nov.

– Elytra with slender black stripes near suture and along lateral margins ( Figs. 55C, 55D View Fig ); parameres of aedeagus with fringed apices ( Fig. 57A View Fig ). Ryukyus ( Amami-Ôshima Island , Okinawa Islands.). ...................................................................18. L. naraharai View in CoL sp. nov .

19. Elytral row 9 almost straight, parallel to elytral lateral margin ( Figs. 61B View Fig , 64B View Fig , 67B View Fig , 72B View Fig ). .............................................................................................................................20

– Basal 1/3 or 1/4 of elytral row 9 of punctures divergent from elytral lateral margins (e.g., Fig. 82B View Fig ). .................................................................................................................... 23

20. Mesoventrite without excavations between median carina and transverse carina ( Fig. 72E View Fig ); male metafemur strongly protuberant ca. at midlength of posterior margin ( Figs. 73C, 73D View Fig ). Honshu. .......................................................... 24. L. fracta (Seidlitz, 1875) View in CoL

– Mesoventrite with one distinct excavation between median carina and transverse carina ( Figs. 61E View Fig , 64E View Fig , 67E View Fig ); male metafemur weakly protuberant posteriorly at posterior margin ( Figs. 62C View Fig , 65C View Fig , 68C View Fig ). ................................................................................................ 21

21. Body length 3.8–4.5 mm; head concave from frons to vertex ( Fig. 6E View Fig ); median lobe of aedeagus slightly constricted at lateral margins in apical fourth in dorsal view ( Fig. 69A View Fig ). Honshu, Kyushu........................................................................ 22. L. yukihikoi View in CoL sp. nov.

– Body length 2.6–3.5 mm; head almost flat; median lobe of aedeagus almost straight at lateral margins in dorsal view ( Figs. 63A View Fig , 66A View Fig ). ........................................................ 22

22. Antennomere 11 clearly narrower than antennomere 10 ( Fig. 64C View Fig ); male metafemur feebly protuberant ca. at midlength of posterior margin ( Fig. 65C View Fig ). Honshu, Shikoku, Kyushu. ............................................................................... 21. L. okawai Nakane, 1963 View in CoL

– Antennomere 11 about as wide as antennomere 10 ( Fig. 61C View Fig ); male metafemur largely protuberant ca. at midlength of posterior margin ( Fig. 62C View Fig ). Ryukyus (Amami-Ôshima Island). ................................................................................... 20. L. kamezawai View in CoL sp. nov.

23. Mesoventrite without excavations between median carina and transverse carina (e.g., Fig. 80E View Fig ). ..................................................................................................................... 24

– Mesoventrite with one distinct or shallow excavation between median carina and transverse carina (e.g., Fig. 33F View Fig ). ........................................................................................ 30

24. Parameres of aedeagus much shorter than median lobe ( Figs. 81F View Fig , 97F View Fig ). .................. 25

– Parameres of aedeagus nearly as long as median lobe (e.g., 38A). ............................ 26

25. Antennomere 11 narrower than antennomere 10 ( Fig. 80C View Fig ); male metafemur triangularly protuberant ca. at midlength of posterior margin ( Fig. 81B View Fig ). Hokkaido. ......................... .............................................................................................. 27. L. nagayamai View in CoL sp. nov.

– Antennomere 11 almost as wide as antennomere 10 ( Fig. 96C View Fig ); male metafemora almost straight and weakly narrowing from basal 3/4 to apex ( Fig. 97B View Fig ). North Chishima Islands. .......................................................................... 33. L. rhaetica (Erichson, 1845) View in CoL

26. Punctures comprising elytral striae relatively large sized. .......................................... 27

– Punctures comprising elytral striae moderately sized. ............................................... 28

27. Dorsum usually brown; median lobe of aedeagus apically rounded in dorsal view ( Fig. 84A View Fig ). South Chishima Islands , Hokkaido ......................................................................... ................................................................... 28. L. obesa (Seidlitz, 1841) View in CoL (unicolor type)

– Dorsum usually dark reddish brown; median lobe of aedeagus weakly emarginate at apex in dorsal view ( Fig. 38A View Fig ). North Chishima Islands , Hokkaido (Rishiri Is.)..................... ............................................................................... 11. L. longitarsis Baranowski, 1993 View in CoL

28. Body ca. 1.6× as long as wide; aedeagus robust in lateral view ( Fig. 32B View Fig ). Honshu. ..... ................................................................................................ 9. L. masatsugui View in CoL sp. nov.

– Body more than 1.8× as long as wide; aedeagus slender in lateral view ( Figs. 92G View Fig , 95B View Fig ). ............................................................................................................................ 29

29. Body length ca. 3.5 mm; elytra with densely arranged very fine punctures between elytral series ( Fig. 91D View Fig ); aedeagus sharply curved near base in lateral view ( Fig. 92G View Fig )............. Honshu. ......................................................................................... 31. L. ozakii View in CoL sp. nov.

– Body length usually less than 3 mm; elytra with moderate number of very fine punctures between elytral series ( Fig. 93I View Fig ); aedeagus weakly curved in lateral view ( Fig. 95B View Fig ). South Chishima Islands, Hokkaido, Honshu ................................................................ ..........................................................32. L. irregularis Portevin, 1927 View in CoL (unicolor type)

30. Punctures comprising elytral striae relatively large sized. .......................................... 31

– Punctures comprising elytral striae small sized. ......................................................... 36

31. Mesoventrite with a shallow excavation between median carina and transverse carina ( Fig. 27E View Fig ). Honshu, Shikoku, Kyushu..........................8. L. koreana Park & Ahn, 2007 View in CoL

– Mesoventrite with a distinct excavation between median carina and transverse carina. (e.g., Fig. 33F View Fig ). ............................................................................................................ 32

32. Body length 2.2–3.1 mm. ............................................................................................ 33

– Body length 3.2–5.0 mm. ............................................................................................ 35

33. Male protarsi and mesotarsi extremely expanded ( Figs. 34A, 34C View Fig ); female abdominal sternite 8 with two distinct projections on anterior margin ( Fig. 35E View Fig ). Honshu, Shikoku.............................................................................................10. L. toyoshimai View in CoL sp. nov.

– Male protarsi and mesotarsi weakly or moderately expanded ( Figs. 76A View Fig , 102A View Fig ); female abdominal sternite 8 with a simple spiculum ventrale at anterior margin ( Fig. 103F View Fig ). ... ..................................................................................................................................... 34

34. Antennae almost unicolor; parameres slightly expanded at apex ( Fig. 76H View Fig ). Kyushu. ... .................................................................................................... 25. L. iwakirii View in CoL sp. nov.

– Antennae bicolored; parameres largely expanded at apex ( Fig. 103D View Fig ). Honshu, Shikoku. ............................................................................................... 35. L. tanakai View in CoL sp. nov.

35. Male metafemora robust but simple ( Fig. 105C View Fig ); male aedeagus relatively thick ( Fig. 106A View Fig ); spiculum ventrale of female abdominal sternite 8 relatively thick ( Fig. 106E View Fig ). Shikoku, Kyushu (Yakushima Is.). ........................................ 36. L. yamauchii View in CoL sp. nov.

– Male metafemora very sharply protuberant in proximal fourth of posterior margin ( Fig. 78C View Fig ); male aedeagus relatively slender ( Fig. 79B View Fig ); spiculum ventrale of female abdominal sternite 8 relatively slender ( Fig. 79D View Fig ). Hokkaido, Honshu, Shikoku. ............................ ....................................................................................... 26. L. lucens (Fairmaire, 1885) View in CoL

36. Excavation of mesoventrite relatively deep ( Fig. 7E View Fig ). Honshu. ...................................... ................................................................................................ 1. L. babai Nakane, 1989 View in CoL

– Excavation of mesoventrite relatively shallow ( Figs. 10E View Fig , 13E View Fig ). ............................... 37

37. Aedeagus relatively slender in dorsal view ( Fig. 12A View Fig ); each paramere with a thin transparent lobe at apex ( Fig. 12A View Fig ). Honshu. ....................................... 2. L. kandai View in CoL sp. nov.

– Aedeagus relatively robust in dorsal view ( Fig. 15A View Fig ); each paramere with a large transparent lobe at apex ( Fig. 15A View Fig ). Shikoku......................................3. L. yoshidai View in CoL sp. nov.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Leiodidae

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