Identifier: entomologywit00fols (find matches)
Title: Entomology : with special reference to its biological and economic aspects
Year: 1906 (1900s)
Authors: Folsom, Justus Watson, 1871-1936
Subjects: Entomology
Publisher: Philadelphia : P. Blakiston's Son
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Toronto

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Text Appearing Before Image:
Phlcgctlwntius sexta visiting flower of Petunia.Reduced. 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.
Text Appearing After Image:
A butterfl), Politcs pcckius, stealing nectar from a tlower of Iris versicolor.Slightly reduced. long-tonged sphinx moths (Fig. 259) ; the evening primrose,like milkweed, is a favorite of noctuid moths. Umbelliferousplants are pollenized chiefly by various flies, but also by beesand wasps. Pond lilies, golden rod and some other flowersare pollenized largely by beetles, though the flowers exhibit nospecial modifications in relation to these particular insects. It i68 ENTOMOLOGY Fig. 261. is noteworthy that polhnation is performed only by the morehighly organized insects, the bees heading the list. Of all the insects that haunt the same flower, it frequentlyhappens that only a few are of any use to the flower itself;many come for pollen only; many secure the nectar illegiti-mately ; thus bumble bees puncture the nectaries of columbine,snapdragon and trumpet creeper from the outside, and- waspsof the genus Odyncrus cut through the corolla of PentstemonIccvigatus, making a hole opposite e

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