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1) The body surfaces of 3rd or 4th instar larvae of Nilaparvata lugens were treated by ZR-515 and RH-2485 to explore the effects of hormones on wing dimorphism of brown planthopper.

2) Although early instar larvae were present in the host larval hemocoel, only one parasitoid survived to come out of host larva for pupation, killing the larva in the process.

3) Spinosad fed to 4th instar larvae for 2 h led to reduction in the percentage of pupation, but did not significantly affect adult emergence, life span,(http://sentencedict.com/instar.html) and egg production.

4) For the instar nymph, wax filaments secreted by multilocular pores that formed the wax coverings on surface of the body.

5) Kecanjun concentrations in the 5th instar healthy silkworms plasma was detected by the microbiologic assay.

6) The orientational behavior of the 1st- and 3rd- instar larvae of the striped stem borer (SSB, Chilo suppressalis) to the volatiles emitted from rice plants was studied with a Y-tube olfactometer.

7) From about one week before pupation (the last instar) haemolymph ecdysteroid titres went up forming two separated peaks.

8) However, avermectin fed by 4th instar larvae could remarkably reduce the percentage of pupation and adult emergence, and egg production.

9) The predacious ability of fifth instar nymph and adult is larger.

10) Adult phototaxis and first instar larva eat rotten organic matter.

11) The larvae had five instars, and exuviated at night, pupated at 5rd instar old larvae, pupation time need 2-4 days.

12) The parasitoid of the leaf miner , Pnigalio phragmitis Erdos, prefers the third instar to parasitizing.

13) The maximum re - production period occurred during the 6 th adult instar.

14) Objective The bioactivity of twelve novel pyridine ring derivatives of podophyllotoxin were tested against 3rd instar larvae of Culex pipiens pallens.

15) Results from this report shows that the elm bark beetle appears in two generations per year on elm tree and the winter is passed in last instar larva in Karamay. The female lays 46—75 eggs.

16) The result of the same insecticide against different popution instar larva of Cnaphalocrocis medinalis were difference.

17) Law between digestion and growth of Antheraea yamamai is obtained through determining average weight increase at each instar, and calculating growth multiple of weight every instar.

18) Culex pipiens pallens were exposed as adults and fourth instar larvae to the sublethal dosages of deltamethrin by impregnated mesh net fibres, topical appication, contaction, and treated larvae.

19) Contact and antifeeding effects on D. stramonium, D. tatula, D. innoxia and D. fastuosa against fifth instar larvae of M. separate and fourth instar larvae of P. rapae were researched.

20) The suitable time for Shachongdan application is at peak stage of young nymphs for rice planthopper, and egg stage to 2rd instar for striped rice borer and rice leaf roller.

21) In every climate zone, the key factors that affected the number of the cochineal population were eggs unhatched and strong rain during the 1st and 2nd instar.

22) Pathogenicity test at saturated humidity showed that the third instar was very susceptible to fungal infection.

23) When larvae in early stadia were reared in the short-day condition, their growth and development usually show both temporary delay in the later instar and relative prolongation of whole larval stage.

24) Various corn borer microsporozoites were used to feed and soak Dendrolimus honi larvae at the instar of 1,2,4 and 7 for infecting them.

25) Damage amount and damage loss to cotton by the various instar larvae of cotton bollworm, Helicoverpa armigera were got through inoculating larvae to cotton plant.