Fig. 3
From: Coevolution Between Food-Rewarding Flowers and Their Pollinators
Nemestrinid flies M. longirostris with a tongue length of approximately 50 millimeters probe flowers of two morphs of L. anceps that differ in tube length. a Long-tubed flowers (53 millimeters) that match the length of a fly which has not yet fully inserted its proboscis. b Short-tubed flowers (28 millimeters) that are mismatched to the proboscis of a fly and thus receive less pollen on stigmas (Pauw et al. 2009). Photos: Steve Johnson