Bolshecapnia, RICKER, 1965

Broome, Hannah Jean, Stark, Bill P. & Baumann, Richard W., 2019, A Review Of The Genus Bolshecapnia Ricker, 1965 (Plecoptera: Capniidae), And Recognition Of Two New Nearctic Capniid Genera, Illiesia 15 (1), pp. 1-26 : 24

Key to Adult Bolshecapnia Complex Genera

1 Epiproct present on tergum 10; sternum 9 covers much of sternum 10 ( Figs. 1 , 31 ) .................................................................... Males (2)

1’ Epiproct undeveloped on tergum 10; sternum 9 not extending over sternum 10 ……. Females (4)

2 Male epiproct with a pair of curved lateral hooks ( Figs. 19 , 27 ) …..............…...... Bolshecapnia

2’ Male epiproct without curved lateral hooks ( Figs. 37 , 70 ) ………….…….................................. 3

3 Anterior margin of male tergum 9 bearing a median pair of conical knobs separated by the epiproct (Figs. 43, 45); epiproct not bent near midlength ( Fig. 38 ) ............................... Eurekapnia

3’ Anterior margin of male tergum 9 without conical knobs ( Figs. 56 , 70 ); epiproct bent upward near midlength ( Figs. 60 , 71 ) .........................………………………. Sasquacapnia

4 Projecting tip of subgenital plate usually narrower than median part of plate ( Figs. 6 , 17 , 34 ) ......................................................... Bolshecapnia

4’ Projecting tip of subgenital plate usually about as broad as median part of plate ( Fig. 36 ) …..... 5

5 Subgenital plate rounded with a mesal notch ( Fig. 66 ), or if truncate, then wider than long; wings without maculations ………. Sasquacapnia

5’ Subgenital plate posterior margin scarcely projecting ( Fig. 35 ); margin rounded but without notch; wings with scattered brown maculations …..............................…..... Eurekapnia

Figures

Figs. 1-6. Bolshecapnia gregsoni, male and female reproductive structures. All localities in British Columbia. 1. Garibaldi Provincial Park, male epiproct and terminal abdominal segments, dorsal. 2. Garibaldi Provincial Park, epiproct dorsal. 3. Garibaldi Provincial Park, epiproct lateral. 4. Garibaldi Provincial Park, vesicle ventral. 5. Mt. Arrowsmith, Vancouver Island, female terminal abdominal segments. 6. Mt. Arrowsmith, Vancouver Island, female subgenital plate (sgp = subgenital plate; tn = tergal notch; ve = vesicle).

Figs. 31-36. Bolshecapnia spenceri (31-34) and Eurekapnia maculata (35-36) male and female reproductive structures. B. spenceri localities in British Columbia, Consolation Lake., and E. maculata localities in California, Alameda Co., Arroyo Mocho. 31. Male abdominal sternum 9 and vesicle. 32. Male vesicle. 33. Female subgenital plate. 34. Subgenital plate detail. 35. Female abdominal sterna 7-10. 36. Subgenital plate detail (sgp = subgenital plate, ve = vesicle).

Figs. 19-24. Bolshecapnia milami, reproductive structures, localities 19-22 in Colorado, Chaffee Co., Chalk Creek, and 23-24 in Wyoming, Albany Co., Libby Creek. 19. Male epiproct dorsal. 20. Epiproct lateral. 21. Epiproct apex lateral. 22. Male abdominal sternum 9 and vesicle (ve = vesicle). 23. Epiproct dorsal. 24. Epiproct lateral.

Figs. 25-30. Bolshecapnia spenceri, male reproductive structures. All localities in Montana, Glacier Co., Iceberg Lake. 25. Male epiproct and terminal abdominal segments dorsal. 26. Epiproct dorsal. 27. Epiproct dorsal. 28. Epiproct apex dorsal. 29. Epiproct lateral. 30. Epiproct apex lateral.

Figs. 37-42. Eurekapnia maculata, male reproductive structures. All localities in California, Alameda Co., Arroyo Mocho. 37. Male epiproct and terminal abdominal segments dorsal. 38. Epiproct lateral. 39. Epiproct base dorsal. 40. Epiproct apex unexpanded dorsal. 41. Epiproct, with apex expanded dorsal. 42. Epiproct apex expanded dorsal.

Figs. 67-72. Sasquacapnia sasquatchi, male reproductive structures, localities in Washington (67-68), and British Columbia (69-72). 67. Whatcom Co., Razor Hone Creek, male epiproct and terminal abdominal segments dorsal. 68. Whatcom Co., Razor Hone Creek, epiproct base dorsal. 69. Manning Park, Similkameen River, epiproct apex dorsolateral. 70. Manning Park, Similkameen River, epiproct dorsal. 71. Manning Park, Similkameen River epiproct lateral. 72. Manning Park, Similkameen River, epiproct base dorsal.

Figs. 55-60. Sasquacapnia missiona, male reproductive structures. All localities in Montana, Missoula Co., Grant Creek. 55. Male epiproct and terminal abdominal segments dorsal. 56. Epiproct and terminal abdominal segments dorsal. 57. Epiproct base dorsal (ds = dorsobasal sclerite). 58. Epiproct apex dorsal. 59. Epiproct apex lateral. 60. Epiproct lateral.

Figs. 13-18. Bolshecapnia milami, male and female reproductive structures, localities 13-16 in Colorado, Pitkin Co., Snowmass Creek and 17-18 in Montana, Lake Co., Lion Creek. 13. Male epiproct and terminal abdominal segments dorsal. 14. Epiproct dorsal. 15. Epiproct dorsal. 16. Epiproct lateral. 17. Female subgenital plate. 18. Male tergal process dorsal.

Figs. 61-66. Sasquacapnia missiona, male and female reproductive structures. All localities in Montana. 61. Flathead Co., Kootenai Creek, male epiproct and terminal abdominal segments dorsal. 62. Flathead Co., Kootenai Creek, epiproct oblique lateral. 63. Flathead Co., Kootenai Creek, epiproct base dorsal. 64. Flathead Co., Kootenai Creek, epiproct apex dorsal. 65. Flathead Co., Kootenai Creek vesicle ventral. 66. Missoula Co., Grant Creek, female abdomen and subgenital plate ventral.