The Phases of Locusts in South Africa |
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Page 315
... extreme solitaria gave an average wing length of 27-60 and 36-49 respectively , with a difference of 8.89 ; the corresponding figures for the two sexes of extreme gregaria were 41.56 and 43-25 , difference 1.69 . In other words , the ...
... extreme solitaria gave an average wing length of 27-60 and 36-49 respectively , with a difference of 8.89 ; the corresponding figures for the two sexes of extreme gregaria were 41.56 and 43-25 , difference 1.69 . In other words , the ...
Page 345
... extreme solitaria F5 , F , and F1 , in the order named . Turning to Table XI , compare the absolute size of the two sexes in the same series . The differences between the fore - wing lengths of females and males are : extreme solitaria ...
... extreme solitaria F5 , F , and F1 , in the order named . Turning to Table XI , compare the absolute size of the two sexes in the same series . The differences between the fore - wing lengths of females and males are : extreme solitaria ...
Page 348
... extreme gregaria material from Tanganyika in biometrical proportions , but is much nearer to the latter than to extreme solitaria material ; it should therefore be regarded as representing a proper swarm type and not an incipient swarm ...
... extreme gregaria material from Tanganyika in biometrical proportions , but is much nearer to the latter than to extreme solitaria material ; it should therefore be regarded as representing a proper swarm type and not an incipient swarm ...
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Common terms and phrases
activity adult stage albinos Aniline yellow background became green biometrical black hoppers box painted bright green hoppers brown cages containing celluloid cylinders cylinders over growing described experiments extreme gregaria extreme solitaria F₂ fair resemblance females field fifth instar fourth instar gauze cylinders glass Graaff Reinet green colour green food green hoppers gregaria characters gregaria coloration gregaria hoppers gregaria type grey-black growing grass hoppers reared hoppers were placed incipient swarms incubation insects instar hoppers isolated hoppers John Bale Locusta migratoria Locustana pardalina locustine Makoni males material migrating swarms migratorioides migratory locusts moult number of hoppers nymphs obtained Orange Free painted boxes pair pardalina percentage permanent habitat phase gregaria phase solitaria Pretoria pronotum ratio reared in isolation second instar solitaria hoppers solitaria type solitary phase species specimens succulent swarm phase swarm type temperature tested third instar transiens type Uvarov veld Vredendal wire gauze yellow