instar


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in·star

(in'stahr),
Any of the successive nymphal stages in the metamorphosis of hemimetabolous insects (simple or incomplete metamorphosis), or the stages of larval change by successive molts that characterize the holometabolous insects (complex or complete metamorphosis).
[L. form]

instar

/in·star/ (in´stahr) any stage of an arthropod between molts.

instar

(ĭn′stär′)
n.
A stage of an insect or other arthropod between one molt and the next.

in·star

(in'stahr)
Any of the successive nymphal or larval stages in the metamorphosis of insects.
[L. form]

instar

a larval stage of insect development. The first instar hatches from the egg and after the first moult (see ECDYSIS becomes the second instar. Thus a third instar larva is one which has completed two moults.

instar

a stage between molts in the development of an insect in which it undergoes a metamorphosis and changes its shape to a degree away from the first instar and towards the final one. The number of instars in an insect's metamorphosis varies widely between species from 5 up to 20 or more.
References in periodicals archive ?
The first instar is described in detail; only major changes that differ from the previous instars are highlighted in the later stages.
En julio de 1996 se obtuvo una muestra de 98 chinches del fresno, las cuales fueron tomadas directamente de las hojas de Fraxinus chinensis que se encuentra en calidad de arbol urbano en Bogota, Colombia; en la muestra se encontraban individuos de todos los instares (15 hembras, 10 machos, 10 del primer instar, 14 del segundo, 17 del tercero, 9 del cuarto y 23 del quinto instar).
The earliest date in 2001 that a female was found carrying ova was mid-April, while the latest that instars were observed was late May (Table 1).
Larval cells became squamous general epidermal cells (GECs) in the protopod in instar V as their height decreased from 10 [micro]m to 3-5 [micro]m (Fig.
Five days after engorgement, 23% (n = 66) of uninfected second instar O.
However, final instar naiads begin to appear in late February, but do not emerge until April; these naiads then spend part of the month of February, March and then part of April in the final instar.
Larvae were reared up to 2nd and 4th instar under controlled conditions at 25 +-2AdegC and 70 +-5% relative humidity.
There was also a decrease in emergence percent to be 70% for the 4th instar in case of (Bt) alone compared to 100% emergence for both 2nd and 4th instars in case of control sample.
Duration of the second instar was shorter than in the other ones, and Sa was the longest (Table 1).