Key to Bolshecapnia Adults

( B. rogozera males unknown)

1 Finger-like epiproct present on the dorsoapical portion of the abdomen (Fig. 15) ..…………………...………………………. Males 2

1’ Finger-like epiproct absent ……….…. Females 4

2 Epiproct tip modified as a downwardly curved hook (Figs. 7, 16); lateral hooks diverge from epiproct body near midlength (Figs. 9, 15); tergum 9 bears a thimble-shaped dorsal process (Figs. 12, 18) ...………………………….. B. milami

2’ Epiproct tip without hook (Figs. 3, 28); lateral hooks diverge from epiproct body near apex (Figs. 2, 28); tergum 9 without thimble-shaped dorsal process (Fig. 21) ………………………… 3

3 Epiproct lateral hooks usually strongly bent near midlength and projecting beyond lateral margins of epiproct (Figs. 27, 29); tergal notch on anterior margin of segment 10 absent ………………………………………….. B. spenceri

3’ Epiproct lateral hooks usually straight and not projecting beyond lateral margins of epiproct (Fig. 2); tergal notch on anterior margin of 10 filled with projecting intersegmental membrane from tergum 9 (Fig. 2) ..……………… B. gregsoni

4 Subgenital plate apex truncate (Fig. 17); apex of projecting portion of plate almost as wide as its base ..………………………..…………... B. milami

4’ Subgenital plate apex rounded, or subtruncate, projecting portion of plate narrower than plate at midlength ..………………………………...…. 5

5 Projecting portion of subgenital plate with lateral margins almost parallel, or weakly convergent.…………………………… B. rogozera

5’ Lateral margins of projecting portion of subgenital plate strongly convergent (Figs. 6, 34) ..……………………………………………….. 6

6 Apical half of projecting portion of subgenital plate very narrow (Figs. 33-34), sometimes asymmetrical …………………………. B. spenceri

6’ Apical half of projecting portion of subgenital plate broadly triangular and symmetrical (Fig. 6) ...…………………………………….. B. gregsoni