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]

Farlex Partner Medical Dictionary © Farlex 2012

instar

(ĭn′stär′)

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]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

Based on repeated measures, diet consumption by 7th instar was significantly influenced by the treatments applied, diet consumption was lowest in integration of B.

Effect of Sub-Lethal Doses of Beauveria bassiana and Nitenpyram on the Development of Red Palm Weevil, Rhynchophorus ferrugineus (Olivier)

citri instars (second through fifth instar) were exposed to parasitoids under 6 foraging scenarios: (1) control without parasitoids, (2) 1 D.

Two parasitoids of Diaphorina citri (Hemiptera: Liviidae) have shared, stage-specific preference for host nymphs that does not impact pest mortality rates

armigera 4th to 6th instar caterpillars was better, when these caterpillars were allowed to consume only leaves in comparison to new leaves + old leaves + pods at the beginning development of the grain and old leaves + pods at the beginning development of the grain + pods with well-developed grain.

Consumption and use of soybean by the caterpillar Helicoverpa armigera/ Consumo e utilizacao de soja pela lagarta Helicoverpa armigera

pulchrus development times and larval body-case measurements used to classify instars Instar Head Suture width (mm) length (mm) Egg -- -- Instar 1 0.12-0.20 0.07-0.16 Instar 2 0.18-0.28 0.16-0.21 Instar 3 0.29-0.39 0.25-0.32 Instar 4 0.44-0.58 0.37-0.54 Instar 5 0.70-0.92 0.58-0.78 Pupae -- -- Total development -- -- Instar Case Average time (days) length (mm) within instar Egg -- 10 Instar 1 <0.92 13 Instar 2 0.93-3.3 15 Instar 3 3.73-6.49 19 Instar 4 06.53-12.23 21 Instar 5 >12.93 32 Pupae -- 22 Total development -- 132 Eggs and pupae dimensions were not measured.

Historia de vida y fenologia de Phylloicus pulchrus (Trichoptera: Calamoceratidae) en una quebrada de bosque tropical lluvioso de Puerto Rico

The 2nd instar had a distinguishing characteristic i.e.

BIOLOGY AND MORPHOMETRIC OF DIFFERENT LIFE STAGES OF THE ORIENTAL FRUIT FLY (BACTROCERA DORSALIS HENDLE) (DIPTERA: TEPHRITIDAE) ON THREE VARIETIES OF MANGO OF SINDH, PAKISTAN

The latter instars illustrated by Janzen & Hallwachs (2016) from ACG and Constantino (1997) from western Colombia.

Primeros estadios de Morpho amathonte (Lepidoptera: Nymphalidae, Morphinae) y su variacion en la costa del Pacifico Sur de Costa Rica

Determination of Attractiveness Index of First Instar of P.

Host-plant-preference and Mortality Analysis of Phenacoccus solenopsis in Association with Biochemical Traits of Different Plant Species

No individuals survived after 5th instar on T4.The same non-significant number of individuals 8.50+-0.87and 7.5+-0.96 was recorded on T1 and T2, respectively.

BIOLOGY OF HELICOVERPA ARMIGERA (HUBNER) ON SUNFLOWER TREATED WITH DIFFERENT CONCENTRATION OF NEEM EXTRACTION IN LABORATORY

avenae (Sa) in all larval instars of the predator; R.

Preferencia, desarrollo y desempeno reproductivo de Chrysoperla externa (Neuroptera: Chrysopidae) utilizando presas provenientes de trigo

The duration and survival of the embryo and nymphal stages, the number and duration of instars, the total life-cycle duration, and the number of prey consumed were assessed.

Effect of temperature on immatures of Stiretrus decastigmus (Hemiptera: Pentatomidae)/Efeito da temperatura sobre imaturos de Stiretrus decastigmus (Hemiptera: Pentatomidae)