Key: Step 918. Orthocladiinae 329 Cricotopus

918a. All thoracic setae very small and fine: frontal setae 35-55µm long; precorneal setae 60-110µm long. Thoracic horn elongate oval, small-toothed, 87-125µm long (086g.jpg).

Cricotopus iso-pe3

918b. Thoracic setae larger: frontal setae 100-160µm long; precorneal setae 135-220µm long. Thoracic horn 'winged', i.e. with a broad blunt tooth on each side, and with a number of coarse teeth at apex, or irregular in shape; about 185µm long (086e.jpg).

Cricotopus iso-pe
Decision path