I.4 Examination of the Wing of an Insect

Aim

To observe the structure of an insect wing, including membrane and veins.

Specimen & Apparatus

• Insect wing (e.g. housefly, crane fly, or moth)
• Slide and coverslip
• Water (if required)
• Compound microscope

Method

1. Remove a wing carefully from the specimen.
2. Place the wing flat on a slide.
3. Add a small drop of water if needed to improve contact.
4. Apply a coverslip gently.
5. Examine under low and then higher magnification.

Observations to Make

• Pattern and branching of veins.
• Transparency and texture of the membrane.
• Presence of hairs or scales.
• Variation in thickness across the wing.

⚠️ Safety: Please read the Safety & Disclaimer page before attempting this exercise.