About Lesson
Some parts of Post genital appendages
A) Median caudal filament:
- This is a thread-like projection arising from the center of the last abdominal segment between the cerci.
- Some insects such as mayflies, silverfish, and bristletails have an accompanying third central tail filament that extends from the tip of the abdomen.
B) Urogomphi (Singular urogomphus;):
- In Coleoptera larvae, a pair of outgrowths of the tergum of segment 9 is in the form of short spines or multiarticulate processes.
- Also referred as pseudocerci; corniculi.
C) Terminal spines:
- The 10th abdominal segment of hawk moths and jet moths bear spine-like structures
- Used for defense.
