Boll weevil (Anthonomus grandis) with cotton plant (Gossypium sp.). The boll weevil is the most destructive cotton pest in North America. The adult insects measure 3-8.5 mm long. The females lay eggs in cotton flower buds (green,bottom left). When the eggs hatch,the larvae feed on the bud or boll tissue for 7-14 days before forming a pupa inside the bud (left,top). The adult develops within the pupa (left,second from top) and emerges fully grown (left,third from top) after about 5 days to cut itself out of the bud or boll. The adults feed on cotton flower buds,pollen or bolls | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Harper, Lizzie |
Bildgröße: | 3375 px × 5485 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |