Contents Vol. 40

GENERAL AND APPLIED ENTOMOLOGY

The Journal of the Entomological Society of New South Wales Inc.

VOLUME 40 CONTENTS

CHEN, Y., BOGEMA, D.R., LANGFIELD, BJ., SALES, N., MCLOON, M.O. and HERRON, G.A. A single nucleotide substitution implicated in spinosad resistance in western flower thrips, Frankliniella occidentalis (Pergande) ……………………………………………………………………………………….19

DOMINIAK, B.C., LÖCKER, H., GILLESPIE, P.S., WORSLEY, P. and SAMPSON, B. Elm Leaf Beetle Xanthogaleruca luteola (Müller 1766) (Coleoptera: Chrvsomelidae) in New South Wales, Australia in 2009/2010 ……………………………………………………………………………………………………………….. 9

Elm Leaf Beetle was originally detected in Victoria in 1989.  The beetle was subsequently detected in New South Wales and a delineating survey was initiated in 2009.  Leaf damage by Elm Leaf Beetle was detected in 10 towns in southern New South Wales during May 2009.  A subsequent survey from November 2009 to April 2010 found insect stages in 14 towns/localities.  The rate of spread for this pest appears to be slow at about 20 km per year.  A day degree model indicated that less than two generations would occur along the northern boundary of the known establishment of the beetle.

General and Applied Entomology 40: 9-13

DOMINIAK, B.C., SUNDARALINGAM, S., JIANG, L. and NICOL. H.I. Comparison of flight ability cylinders for quality assessment of mass reared Queensland fruit fly Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) ……………………………………………………………………………….. 15

HERRON, G.A. and LANGFIELD, B J. An increase in spinosad resistance detected in Australian Frankliniella occidentalis (Pergande) (Thripidae: Thysanoptera) ………………………………………………………………………………………………………….. 7

In Australia spinosad is the mainstay insecticide for western flower thrips Frankliniella occidentalis (Pergande) control.  Spinosad resistance was first detected in the 2002/2003 season from when it progressively increased to plateau at 100 to 200-fold.  In season 2010/2011 a population of F. occidentalis collected from ornamental plants (Chrysanthemum sp.) was found to be 1400-fold resistant to spinosad indicating a magnitude increase in resistance.  This is the highest level spinosad resistance yet detected in Australian F. occidentalis.

General and Applied Entomology 40: 7-8

WEBB, C.E. and RUSSELL, R.C. Do wrist bands impregnated with botanical extracts assist in repelling mosquitoes? …………………………………. 1

A wide range of insect repellent formulations, as well as active ingredients, are currently registered for use in Australia.  While topical repellents are most common, there are also commercial products in the form of wristbands impregnated with botanical extracts that purport to repel mosquitoes.  In laboratory tests, wristbands impregnated with peppermint oil were tested against the mosquito Aedes aegypti to determine their efficacy in repelling mosquitoes from the forearms of human volunteers compared with a commercial DEET-based topical repellent.  The wristbands failed to stop landing by the mosquitoes, although the mean landing rate of mosquitoes was significantly lower on forearms in the presence of the wristband compared with untreated controls.  The mean landing rate of mosquitoes on forearms treated with DEET was significantly lower than those of forearms in the presences of the wristband.  The results indicated that while wristbands impregnated with botanical products may assist in repelling mosquitoes, their inability to completely protect individuals from mosquito bites suggests that they should not be recommended for use in areas of endemic or epidemic mosquito-borne disease.

General and Applied Entomology 40: 1-5

BOOK REVIEWS:

Spider Silk. Evolution and 400 million years of spinning, waiting, snagging and mating …………………………………………………………………………………………………………………… 23

OBITUARIES:

Dr Courtenay Smithers: A tribute …………………………………………………………………………………… 25

Dr Erik Shipp: A tribute ………………………………………………………………………………………………. 35