Fig. 8 in The ecological role of immature phantom midges (Diptera: Chaoboridae) in the Eocene Lake Messel, Germany

Fig. 8. Parts of respiratory horns of phantom midge pupae (Chaoboridae): (A) upper part of fossil respiratory horn in a coprolite; (B) upper part of a respiratory horn from extant Chaoborus sp. The appendices of the respiratory horns are arrowed. Transmitted-light microscopy. Scale bars 50 µm.