﻿HYBRIDS OF THK GENUS OPORABIA. 33 



Table I. — Micbogenes of Opoeabia autumnata. 



0. autumnata 

 autumnata. 



0. autumnata 

 Jiligrammaria. 



O. autumnata 

 allicolaria. 



0. autumnata 

 pinivoruria. 



Description Green, dull, with Darker green, some-l Very bright green; Green, but may be 

 : faint suggestion of times mottled; head' newly hatched larva marked with rusty 



Food 



Pupates I 



giey 



Birch and alder 



Last 



smoky, smaller | a little longer 



\Calluna, Erica,Vac- Mder and birch 

 I cinium \ 



First [Third 



markings to mimic 

 pine buds ; not 

 purple like dilutata 

 Pine and larch 



j 



I Second 



§ tOct. Sth-Nov. 10th Aug.20th-Sept. 20th Sept. 23rd-Oct.23rd:Sept.l6th-Sept.30th 



Ground, often white, .Colour the same ; Ground brown, but 

 varies to grey; when; markings heavier grey mixed ; mark- 



melanicblack-brown' and clearer, especi- 

 with subterminal ally on hind wings : 

 line paler; mark-i ground rarely suf- 

 ings generally dis-| fused ; glossier; 

 tinct; female fairly] smaller; wings nar- 

 large j rower; female smal- 



ler in proportion 



ngs more delicate 

 but still firm ; cen- 

 tral area very broad, 

 duller ; larger, and 

 females in ]propor- 

 tion larger still 



Males always suf- 

 i fused and feebly 

 marked ; females 

 very small, gene- 

 ; rally well marked ; 

 when melanic, blue- 

 black 



Octavals I] iNot large, widely Nearer ; depressionlLarger 



de- Much the same 



Crista; % 

 Labides ' 



apart ; depression deeper 

 between shallow 

 About I'J About 7 



Head wide, 

 thin hairs 



withlHead narrow, 

 thin hairs 



pression shallow 



About U 



Head narrow, with 

 thin hairs 



About 19 



Head wide ; very 

 densely clothed with 

 hairs 



Signal t of 



Bursa 

 copulatrix 



Small and scobinate Large: 



Larger 



About the same 



' Wherever comparisons are made they are with 0. autumnata autumnata. 



t Ova out of doors but not in nature. I Wild larva. § Wild imagines. 



II Chitinous projections on 8th sternite. M Patch of stiff hairs on juxta. 



** Pair of rods, with a head bearing fur in these species, rising from the chitinous bar 



extending from costae of valves.' 

 tt Chitinous armature of bursa. 



