There are substantial differences between the morphology of the proboscises of both feeding guilds. Foragers with short corollas and shorter proboscises (tongue) were discovered in mixed species stands. Elephant trunks and tapir proboscises also utilize a muscular hydrostat. Like the other types of tapir, they have small, stubby tails and long, flexible proboscises. Like the other species of tapirs, they have small, stubby tails and long, flexible proboscises. Proboscises in some "Heliconius" species have evolved to consume solids such as pollen. Some Anopla have branched proboscises which can be described as "a mass of sticky spaghetti".