instar

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instar

[′in‚stär]

(invertebrate zoology)

A stage between molts in the life of arthropods, especially insects.

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References in periodicals archive ?

armigera passed through six instars in all treatments.

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

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.

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

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.

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

Overlapping in measurement extremes between instars was registered for all structures analysed from both populations (Figure 1).

Growth and developmental time in the parthenogenetic scorpion Tityus stigmurus (Thorell, 1876) (Scorpiones: Buthidae)/Crescimento e tempo de desenvolvimento do escorpiao partenogenetico Tityus stigmurus (Thorell, 1876) (Scorpiones: Buthidae)

Adult grasshoppers often appear strikingly different from their fifth instars, both in form and coloration.

Instars of narrow-winged saltbush grasshopper, Aeoloplides tenuipennis (Scudder, 1897) (Acrididae: Melanoplinae), with notes on habitat and identification

Each cup was provided with treated leaves and ten 2nd instar or five 4th instar larvae.

Bio-residual activity of selected biopesticides in comparison with the conventional insecticide Dursban against cotton leafworm, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae)

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.

Numero y duracion de los estadios ninfales de la tucura neotropical Cornops aquaticum (Acrididae: Leptysminae) en Argentina

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.

Immature stages and life cycle of the wasp moth, Cosmosoma auge (Lepidoptera: Erebidae: Arctiinae) under laboratory conditions

Some differences in morphology of larval instars I and II were found.

Morfologia del primer y segundo estadio larval de Peckia (Peckia) chrysostoma (Wiedemann, 1830)(Diptera, Sarcophagidae)

The presence of primary spiniform frontoclypeai sensilla provides an overt character that increases the probability of identifying first instars R.

A redescription of the first instar of Rhantus calidus (Fabricius) (Coleoptera: Dytiscidae) with notes on its biology

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.

Nutritive quality assessment of two mulberry varieties including Kokosa and local on some biological parameters and economical characters of silkworm Bombyx mori L

Each was observed daily until the instar in which the first pupa was observed, to register the development time in days.

Potential fecundity, larval development, and survival of two invasive species of Arhopalus (Coleoptera: Cerambycidae) coexisting in southern South America/Fecundidad potencial, desarrollo y supervivencia larval de dos especies invasoras de Arhopalus (Coleoptera: Cerambycidae) que coexisten en el sur de Sudamerica