instar

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Related to instars: antennae

instar

[′in‚stär]
(invertebrate zoology)
A stage between molts in the life of arthropods, especially insects.
References in periodicals archive ?
Duration (days) (X [+ o -] SE) of Chrysoperla externa instars, whose larvae were fed with different preys, in laboratory (25[grados]C, RU 70 %, Photophase 12 h), DF = 27.
Duration (days) of nymphal instars (mean [+ or -] SE) and survival of Stiretrus decastigmus (Hemiptera: Pentatomidae) fed on Microtheca ochroloma (Coleoptera: Chrysomelidae) larvae at 20, 25, and 30[degrees]C.
Adult grasshoppers often appear strikingly different from their fifth instars, both in form and coloration.
In the summer nymphs of Corrientes, 72.2% of individuals were males and 27.8% females; males required only five instars to complete nymphal development, whereas females required six.
First and second instar larvae fed on the leaf epidermis while other instar larvae fed on all the laminae but not on the 1st and 2nd order veins.
The presence of primary spiniform frontoclypeai sensilla provides an overt character that increases the probability of identifying first instars R.
Three silkworm larvae in 2nd, 4th and 6th day of fifth instar were picked from each replication and were chilled in a refrigerator for a few minutes.