recept. harp. and foram. recept. harp. tiny; lob. ventr dark, with retracted concave margin extending ventrad

angustipennis

-

recept. harp. large, often ± bell-shaped with several "chambers"

--> 2

2

marg. dors. foram. fringed with setae; lob. ventr. very small, triangular

silfvenii

-

marg. dors. foram. without bristles

--> 3

3

lob. ventr. triangular, pointed and mostly dark coloured; angle of the tip of lob. ventr. < 70°

bulgaromanorum

-

lob. ventr. triangular, pointed and very darkly coloured, angle of the tip of lob. ventr. > 70°, frequently about 90°

botosaneanui

-

lob. ventr. broadest in dorsal half, with blunt, slightly dorso-laterally turned tip

--> 4

-

lob. ventr. hemi-elliptical, broadest in median zone, ventrad and dorsad ± evenly narrowing

--> 8

4

lob. ventr. short and truncated; recept. harp. hemi-elliptical, marg. dors. foram. extended and slightly concave

tobiasi (+)

-

recept. harp. bell-shaped or irregular; posterior margin of foram. recept. harp. with narrow sclerite edge or tooth

--> 5

5

lob. dors with rectangular contour, corners moderately rounded; canal. recept. harp. between lob. dors. and lob. ventr. open; recept. harp. bell-shaped; distal border of the canal. recept. harp. reaches the middle section of lob. dors. or just barely beyond

contubernalis

-

lob. dors. with rectangular contour, but corners distinctly rounded; canal. recept. harp. between lob. dors. and lob. ventr. distinctly narrowing and sometimes concealed; recept. harp. hemispherical; distal limit of canal. recept. harp. reaches the ventro-distal tip of lob. dors.

contub.  masovica

-

lob. dors. distinctly rounded

--> 6

6

lob. dors. narrow and turning downward droplet-shaped; lob. ventr. with subacute distal apex

ornatula

-

lob. dors. broadly rounded or with triangular contour

--> 7

7

lob. ventr. triangular, with rounded distal tip; posterior margin of foram. recept. harp. with a narrow edge; light-coloured specimens

exocellata

-

lob. ventr. narrow, tapering into a rounded tip; foram. recept. harp. with mushroom-shaped contour

guttata

-

lob. dors. broad, rounded, lob. ventr. distally rounded; posterior margin of foram. recept. harp. with a proximal sclerite edge tapering into a distinct tooth

modesta

8

Membrane of front wing pale, with vivid pattern and conspicuous bars along A1+2+3 and Cu 1;  a broad continuous brown band along the apex

--> 9

-

Front wing without vivid marks on the membrane

--> 10

9

Conspicuous dark spot on fork 1 (G1) of front wing; width of galer. dors. IX only half the distance between the lob.ventr.; foram. recept. harp. mushroom-shaped or keyhole-shaped, small and often bright "secondary groove" at the proximal edge of marg. dors. foram.; lob. dors. broadly triangular, the ventral margin disappears under the big lob. ventr.; galer. dors. IX more elongated than broad; clasper receptacles reaching deeply inside segment IX (only visible in macerated specimens)

siltalai

-

Dark spot on fork 1 (G1) of front wing lacking or just barely visible; width of galer. dors. IX broader than half the distance between the lob. ventr.; recept. harp. ring-shaped; lob. dors. triangular, tiny, the ventral margin most often doesn’t disappear under the lob. ventr.; galer. dors IX wider than long; clasper receptacles only slightly reaching inside segment IX (only visible in macerated specimens)

instabilis

10

recept. harp. small and narrow; canal. recept. harp. running far downward and ending in a dark band; lob. dors. tiny compared with lob. ventr.; membrane of the wings intensely brown coloured, hairy, without markings

fulvipes

-

recept. harp. bell-shaped; canal. recept. harp. broad and flat; with prominent dark spot in fork 1 (G1) of the front wing; wing membrane pale and without markings

bulbifera

-

foram. recept. harp. narrow, club-shaped; imaginary longitudinal line across the clasper receptacle and the canal. recept. harp. runs anteriorly of the lob. ventr. or cuts it in proximal position; with prominent dark spot in fork 1 (G1) of front wing

pellucidula

-

foram. recept. harp. ± hemi-elliptically curved; imaginary longitudinal line across the clasper receptacle and the canal. recept. harp. runs posterior to the lob. ventr. or cuts through distally; spot in fork 1 (G1) of front wing indistinctly showing, often missing

incognita

-

foram. recept. harp. broadly descending into the canal. recept. harp.; lob. dors. narrow, drop-shaped

tenuis

-

foram. recept. harp. with irregular, ± x-shaped contour; ventral margin of lob. dors. and dorsal margin of  lob. ventr. approaching each other

saxonica

-

foram. recept. harp. with irregular contour, enlarged ventrally; proximal margin ends in a distinct tooth; ventral margin of  lob. dors and dorsal margin of  lob. ventr. diverging

dinarica