Green gland or Malpighian tubes (Green Gland: Extinct? (No: Are they a…
Green gland or Malpighian tubes
Green Gland: Extinct?
No: Are they a living fossil?
Yes: Horseshoe Crab
No: Does it have a telson?
No: Are they motile?
Malpighian Tubes: Antenna?
Yes: Do they have more than three segments?
Yes: Are they scavengers or predators?
No: Do they drink blood?
No: Can they make a web?