. Entomology : with special reference to its biological and economic aspects. he more extensive adaptations ofthe bees when we take into consideration the impersonal natureof the operations of Pronuba. Further investigation mayrender these extraordinary interrelations more intelligible, orless mysterious, than they are at present. The bopus Yucca moth Fig. 259. (Prodoxus quinqiiepunc-tclla) closely resemblesand associates with Pro-nuba but oviposits in theflower stalks of Yuccaand has none of the spe-cial adaptive structuresfound in Pronuba. As regards floral adap-tations, these examplesare su
. Entomology : with special reference to its biological and economic aspects. he more extensive adaptations ofthe bees when we take into consideration the impersonal natureof the operations of Pronuba. Further investigation mayrender these extraordinary interrelations more intelligible, orless mysterious, than they are at present. The bopus Yucca moth Fig. 259. (Prodoxus quinqiiepunc-tclla) closely resemblesand associates with Pro-nuba but oviposits in theflower stalks of Yuccaand has none of the spe-cial adaptive structuresfound in Pronuba. As regards floral adap-tations, these examplesare sufficient for presentpurposes; many othershave been described bythe botanist; in fact, theadaptations for cross pol-lination by insects are as\aried as the flowers Pollenizers.—The great majority of entomophilousflowers are pollenized by bees of various kinds; the apple,pear, blackberry, raspberry and many other rosaceous plantsdepend chiefly upon the honey l)ee, while clover cannot set seedwithout the aid of bumble bees or honey bees, assisted possibly. Phlcgctlwntius sexta visiting flower of INSECTS IX RELATION TO PLANTS 267 by butterflies. Lilies and orchids frequently employ butterfliesand moths, as well as bees, and the milkweed is adapted in aremarkable manner for pollination by butterflies, moths andsome wasps, as was described. Honeysuckle, lilac, azalea,tobacco, Petunia, Datura and many other strongly scented andconspicuous nocturnal flowers attract for their own uses the Fig. 260.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
