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A further autumn record of the common quaker, Orthosia cerasi (Fabr.) (Lep.: Noctuidae) PDF

1 Pages·2002·0.47 MB·English
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Preview A further autumn record of the common quaker, Orthosia cerasi (Fabr.) (Lep.: Noctuidae)

: 68 ENTOMOLOGIST'S RECORD,VOL. 114 25.iii.2002 The following comments can be made on the data in Table 1 OrthosiacerasiCommonQuaker Intheperiod 1988to 1993emergenceappearstobeduringthefirstthreeweeksofMarch,with anearlyappearancein 1990on23February. However,from 1997to2002,thenormappearsto be the first two weeks ofFebruary with late-comers on 26 February in 2000 and 2 March in 1997. Thus, theredoes seemtobeacleartrendtowardsemergence approximately threeweeks toamonthearlieroverthe 14yearsurveyperiod. However, theflightperiodendsconsistently overthisperiod,between 12 and 18 May. OrthosiagothicaHebrewCharacter During 1998to 1993,emergencetakesplacebetween4and22March,withnoFebruaryreports;in theperiod 1997to2002itisbetween21 Februaryand20March,withtwo ofthesixreportsduring February.AswithO.cerasi,theremaybeatrendtowardsearlieremergence,thoughitislessclear cutinthisspecies.Theendoftheflightperiodfallswithintherangeof12to28Mayinallyears. OrthosiaincertaClouded Drab AdultsappearconsistentlybetweenthesecondandthirdweeksofMarch(range6to22March) except during 2002 when the first record was made on 25 February (nine days ahead ofthe statedrange).Thisoneoddoccurrencemaybeaflukeandisnotstatisticallysignificant.Aswith theprevioustwospecies,thereisnodiscernibleshiftintheendoftheflightperiod,lastrecords falling intheperiod9to 26May throughoutthe 14years. Xylocampaareola Early Grey Although there is a wide range offirst dates, from 4 March to 2 April, there does not seem to be a trend towards earlier emergence. The end ofthe flight period is, as in the other species analysed, unaltered, fallingbetween 12 and26May. This is all terribly unscientific and I am sure that my academic colleagues will probably excommunicate me! However, it does appear that at least the Common Quaker, and perhaps also the Hebrew Character, may be tending towards a generally earlier emergence. It is ofinterest that, in spite ofthis, the end ofthe flight period is unaltered for all the species studied; for the moths, like me, early retirement is obviouslynoton! Ifthissnippetofinformationmotivatesotherstoapproachthematter inamore scientificmannerIshallconsiderthisnotetohavebeenwellworthwriting- ColinW. Plant, 14WestRoad,BishopsStortford,HertfordshireCM23 3QP(E-mail; [email protected]). A further autumn record ofthe Common Quaker, Orthosia cerasi(Fabr.) (Lep.: Noctuidae) Brian Goodey (antea: 35) reported the occurrence ofa specimen ofOrthosia cerasi (Fabr.) in South Essex on 16 October2001. 1 can addthatI caughtone inmy garden in Earley, near Reading (O.S., grid reference SU 735710), almost exactly ten years earlieron the nightof8-9 October 1991. The specimen is inmy collection. My gardenmercury vapourtrap is notrunroutinely,butwasrunonthefournights 7 to 10 October 1991, producing the cerasi, expected autumnal species and one late brood example of the pyralid Hypsopygia costalis (Fabr.) (on 9 October 1991).— Norman Hall, 44 Harcourt Drive, Earley, Reading RG6 5TJ (E-mail; [email protected]).

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