. Entomology : with special reference to its biological and economic aspects. formlucia. Finally, in summer, a third form {pscudargiolusproper) appears, as the product of lucia or else the joint prod-uct of lucia and violacca, and this is still larger, but the blackspots are now faint. In the warm South, the spring form isviolacea, but while some of the males are blue, others aremelanic, as just mentioned—a dimorphic condition which doesnot occur in the Xorth. Jlolacca then produces pscudargi-olus, in which, however, all the males are blue. Iphiclidcs ajax (Fig. 232) is another polymorphic but
. Entomology : with special reference to its biological and economic aspects. formlucia. Finally, in summer, a third form {pscudargiolusproper) appears, as the product of lucia or else the joint prod-uct of lucia and violacca, and this is still larger, but the blackspots are now faint. In the warm South, the spring form isviolacea, but while some of the males are blue, others aremelanic, as just mentioned—a dimorphic condition which doesnot occur in the Xorth. Jlolacca then produces pscudargi-olus, in which, however, all the males are blue. Iphiclidcs ajax (Fig. 232) is another polymorphic butterflywhose life history is complex. The three principal varietiesof this species, known respectively as marccllus, tclauioiiidcsand ajax, difter not only in coloration, but also in size andform; marccllus appears first, in spring; fclaiuouidcs appears COLOR AND COLORATION 203 a little later (though before marccUus has disappeared) ; andajax is the summer form: as the season advances the varietiesbecome successively larger, with longer tails to the hind wings. Fig, 2t, Iphiclidcs ajax, form telainonidcs, on flower of button bush. Reduced. Now Edwards submitted chrysalides of the summer formajox to cold and thereby obtained, in the same summer, butter-flies with the form of but the markings of the spring Fig. 233.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
