ARTHROPODA – "jointed feet"
coelomate, 2 anterior head appendages, 3 cephalic appendages, segmentation with specialization, cephalon, thorax, abdomen, walking appendages (perieopoda), abdominal appendages (pleopoda)
Hard cuticular exoskeleton, chitin (n-acetyl glucosamine), molting to grow, terminal vs. continuous ecdysis, step function in growth, complete vs. incomplete metamorphosis.
Cuticle: tough exoskeleton of arthropods. Composed of chitin, embedded with metals, i.e., calcified, polyphenolics, etc.
Chitin: complex arrangement of n-acetylglucosamine into support molecules for exoskeleton.
Parasitic castration: Theda Bara as "The Vamp," or Marlene Dietrich as "the blue angel." Case where parasitism results in castration of the host. Examples from many host-parasite relationships.
Parasitoid: a parasite that kills its host. Some wasps.
Metamorphosis: Kafka novel on the cockroach. Complete metamorphosis is a radical change, i.e., from a maggot to fly. Incomplete metamorphosis is less radical, the larval instar resembles the adult (without wings, etc.).
Nauplius, nauplii: larval stage of copepods, barnacles, other primitive crustaceans.
Cyprid: second larval stage of barnacles (resembles some cyprid ostracods hence the term).
Epicaridean larva: characteristic isopod larva of the suborder Epicaridea.
Mandibles, Maxillae: Mouthparts used in feeding or attachment.