Related Clues:

• Young insect before metamorphosis
• As some say, volcanic rock produces a primitive life form
• Youngster -- a developing creature
• Insect life stage between larva and adult
• Young animal, a follower of grub
• Larva's descendant
• Grub is right in the middle of volcanic deposit
• Woolly bear, e.g
• Silkworm, e.g
• Butterfly-to-be
• Form of insect
• Grub vis-à-vis a beetle
• Bug contained by regular vaccination?
• Cocooned stage
• Young jellyfish