VoL XXvi) BNTOMOLOCICAL NEWS ffj 



The two fcmlcs dt KrIbed Iqr Kdlkott (1899) are. foOowiaff hit 

 order. *'(b) orange and broiue btedc* •" a bderochrgiaatk ft—li at 

 described by Calvert (1803). and "(a) bbdc and gr«cn (pndooac)" » 

 an aged homoeo* or hetcroch ronaatk female. 



Witlianuon (1900) rccocnized a *lilacfc" and an "orantc" female. 

 An the blade females are said to liave ''postociilar spola eoonected or 

 not." it seena likdy that they indiidcd advanced indivMaab of both 

 ihr homoeochromatic (t. t., portocolar spots not c n oa ccted ) and the 

 heterochromattc (1. e., spots eoonected) forms. Hb orange females 

 are rviHently heterochromatic forms like those of Cahrert (lAgo) and 

 of Kcllicott (1899). but he p e rce i ved and recocdad that **thb form 

 becomes mtirrly pndnoae.** 



Ris (190.1) regarded the ffwalti as sh ow in g '^ cnrioiw pol ym of- 

 phitm." Hit cxprestinn "In some tcseral female« of the green form 

 the upper tide of segments 8 and 9 b largely bine" refers to homoeo- 

 chromatic females of vtrtifoUt or of kelHcolH, more probably the for- 

 mer. While he docs not me n tion the earliest stage of hete r oc h ronmtic 

 females (i t.. those with bine on a t i dwi ii nal sttuHuts 8 and 9), he 

 recognises the dimorphism (or dJchmmatism) of grass and orange 

 females, ahhoogh hb "fully adnh" individnab of the latter are not the 

 most fully ahered in their colors. 



Needham ( 1903. pL 17. fig. 5) has r e pi it c d hb fvnre of i8g& 



Two fiffurc* by Howard ( igiu. pL xhrii. figa. 1, 4) seem to be refer- 

 able to pminose females of i o detcrwioahle fonn. 



Walker (ipoB) briefly smnmariaes "two color varieties" of fetnaba. 

 "the 'black female.' colored Ifte the mab when yoong." wWdi impBcs 

 our homoeochromatic form, and the "orange female." a hdcrochro- 

 matic form of wupcdfied age. He adds, "Both forma become pmi- 

 note when old. appearing then as thoogh cove r ed with a dull bldah 

 dust . . . The btter [black femabi seems to become p rein oae 

 very soon after maturity." The lastH|tioted sentence probably explains 

 why so rebtively few homoeochromatic females with bine 00 seg- 

 ments 8 and 9 have been recorded in the l i ter atn re. and why the trae 

 characters and rebtions of this form have not been more largely 

 recognised. 



Muttkowski's descriptions of igoB apply to the same cooditiona noted 

 by Krllicott (i8qo>. 



If my interpretation of tpectmeiis and of descriptions be 

 correct. I must assume one of three possibilities from Miss 

 I.yon's work. t. That <hr ovcrlooket! the presence of blue 

 with the l.-itcnil black stripes on abdominal scf^n^nts 8 and 9 

 of her youngest oranf^ females, or 2. that the blue on these 

 segments disappeared within 48 hours, or 3. that some orange 



