Chironomidae Exuviae: Dichotomous key: step 500: "Tanytarsini 141 Krenopsectra"

Key: Step 500. Tanytarsini 141 Krenopsectra

500a. Thoracic horn extending from the basal bulb, not strongly bent at base. Abdominal segments without lateral taeniae.

Krenopsectra acuta

500b. Thoracic horn bent at right angles at attachment to basal bulb. At least segments VII and VIII with lateral taeniae.

Step 501. Tanytarsini 142 Krenopsectra

Decision path