instar Hear it!

instar¹ Definition

in·star (instär′)

noun

any of the various stages of an insect or other arthropod between molts

Etymology: ModL < L, a shape, form < instare: see instant

instar² Definition

in·star (in stär)

transitive verb -·starred, -·star·ring

  1. to stud or adorn as with stars
  2. to place as a star

instar Usage Examples

Adjective modifier

  • larval: There are usually 7 to 8 larval instars, but the number may vary from 5 to 16.
  • final: Once in the final instar, I was able to use the caterpillars guide by Jim Porter to identify them.
  • first: When they hatch the first instar of the larval stage is very small and makes tiny holes in the leaf.
  • early: The upper image is of an early instar - probably stage 2. The search for food causes the family group to disperse.
  • 5th: The 5th larval instar, is followed by the winged imago stage which are 3mm long and brown-black in color.
  • second: The five young animals molted to second instar within a few weeks.

Modifies a noun

  • larva: These first instar larvae look similar regardless of which species they belong to.
  • nymph: Early instar nymphs have a pale area centrally on the dorsal thorax.
  • s: It goes through a series of stages or instar s, shedding layers of skin to accommodate its ever increasing size.
  • stage: The age structure of the populations is also noted by comparing the proportion of the different instar stages.
  • caterpillar: There is an easy exit for the tiny first instar caterpillar to escape from the confines of its egg.