Palamnaeus General Characteristics | Free Biology Notes

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Palamnaeus General Characteristics

• These are commonly known as Scorpions and lives under stones and burrows
• Body divided into capahalothorax and abdomen
• Capahalothorax is unsegmented and covered by carapace
• The prosoma has two eyes on top and two to five lateral eyes along each side
• The prosoma bears six pairs of appendages
  • First pair is chelicerae
  • Second padipalp
  • Remaining four pairs are walking legs
• Abdomen is divided into Mesosoma and Metasoma
• Mesoma made of seven segments. 3-6 segments bear paired book lungs for respiration
• Metasoma slender, movably appendages but is armed with poison apparatus
• poison apparatus comprises an ampulla and curved spine
• Sexes are separate and animals are viviparous