Key: Step 908. Orthocladiinae 319 Cricotopus

908a. Frontal setae less than 2.5µm thick. Dorsocentral setae 1 and 2 of similar thickness, often shorter than seta 3 or 4; one of setae 3 and 4 much smaller than the other.

Cricotopus pilitarsis

908b. Frontal setae 3-4µm thick. Dorsocentral seta 2 distinctly thinner than 1; setae 3 and 4 equal or subequal, usually shorter than seta 1 and/or 2.

Cricotopus trifasciatus
Decision path