This preview shows page 1. Sign up to view the full content.
Unformatted text preview: larva, is completed. The eyes, antennae, legs, tongue and forewings of the imago are visible in the pupal cuticle (4). If the pupa is formed at the end of the rains, it may not hatch at once but remain in a dormant state called diapause during which little oxygen is used and normal chemical reactions in the body are replaced by special anaerobic ones, that is, chemical processes not requiring oxygen. Whether pupation lasts for one week or longer, the adult emerges with small, sac-like wings, which are expanded by pumping blood into them. After this they flatten and become chemically hardened. The wings are supported by branching veins, each being hollow and containing a trachea, blood-space and nerve. claspers silk pad silk girdle larval cuticle splitting eye antenna fore-wing accumulating larval cuticle cremaster 1 2 3 4 The pupa Metamorphosis Dr. N. Jago...
View Full Document
- Fall '11