Insect Relations of Certain Asclepiads. II
Insect Relations of Certain Asclepiads. II
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某些阿斯克勒庇亚斯的昆虫关系。
DOI：
10.1086/326179
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发表时间：
1887
影响因子：
--
通讯作者：
C. Robertson
中科院分区：
文献类型：
--
作者：
C. Robertson
根据对阿斯克勒庇亚斯的用处，蝴蝶可以分为三类。凤蝶是最有用的，除了阿贾克斯，我们所有的物种都有花粉。它们用翅膀吸。用它们的腿来抵消翅膀的运动，它们迅速重复那些必要的运动，从花药细胞中吸取花粉并将它们插入柱头室。其他大型蝴蝶，如Danais，在吮吸时保持翅膀不动，花更多的时间在伞形花序上，但通常携带花粉。小蝴蝶比没用还糟糕。它们在伞形花序上停留很长时间，吮吸，但它们的脚停留在花的表面，很少影响授粉。在23种带有花粉的物种中，只有3种比小腹蛛小;而在12种没有发现花粉的物种中，除了没有被捕获的Eudamus Tityrus之外，小腹蛛是最大的。如前所述，蝴蝶的爪子上有微粒的频率低于Hyplutera。由于发现有几只飞蛾被困在花上，授粉必须经常由夜间飞行的Lep-
On the ground of usefulness to Asclepias, butterflies may be thrown into three divisions. The Papilios are the most useful, and pollinia were found on all of our species except Ajax. They suck with their wings in motion. Using their legs to offset the motion of the wings, they rapidly repeat those movements which are necessary to draw the pollinia from the anther cells and insert them into the stigmatic chambers. Other large butterflies, like Danais, hold their wings still in sucking, spending moretime on an umbel, but generally carrying pollinia. Small butterflies are worse than useless. They remain long on the umbels, sucking, but resting their feet superficially on the flowers, and seldom effecting pollination. Of twenty-three species bearing pollinia, only three are smaller than Chrysophanus Hypophleas; while of twelve species on which no pollinia were found, with the exception of Eudamus Tityrus, which was not caught, the Chrysophanus is the largest. As stated before, butterflies have corpuscula on their claws less frequently than Hymenoptera. Since several moths were found entrapped on the flowers, pollination must often be brought about by night-flying Lep-