bee larva spiracle close-up In a view of a spiracle of a first-instar Apis mellifera larva under scanning electron microscope, “spheroid” structures can be seen, which researchers suggest may be droplets of an enzyme that the larva secretes to aid in hatching. Leave a Reply Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed. Subscribe to Entomology Today! Enter your email address to subscribe to Entomology Today. You'll receive notifications of new posts by email. Email Address Search Search for... Search Get Certified!