Table 1 Larval densities of Nemurella pictetii per m² in different water bodies.

Spring Ravnkilde

Denmark

29292 (08)

Moss; first instar possibly not covered, n = 10

[42]

Broadstone Stream

England

1323 (09)

Substrates of all kind, n = 40

[55]

Tributary to stream Biała Przemsza

Poland

18365 (01)

Submerged macrophytes, larvae smaller than 1 mm not included, n = ?

[23]

Stream Vel'ký Javorník

Slovakia

ca. 900 (12)

Gravel and detritus, n = 2-3

[56]