abdominal sac造句

• Despite prodigious egg-laying talents, female mosquitoes mate only once, storing a lifetime of sperm in an abdominal sac called a spermatheca.
• Female traits in empidids, such as abdominal sacs and enlarged pinnate leg scales, have been suggested to'deceive'males into matings by disguising egg maturity.
• In dance flies ( " Rhamphomyia longicauda " ), females have two ornaments, inflatable abdominal sacs and pinnate tibial scales, that they use as courtship displays in mating swarms.
• In some species, competition for the food provided by males is so strong that females have developed elaborate ornaments, including feathery  pennate scales on their legs, darkened wings, and inflatable abdominal sacs that enhance their attractiveness.