Meanings of long proboscis in English

Or, again, why has not any member of the group acquired a long proboscis?

I saw this insect in my garden hovering over flowers with its long proboscis, and then quickly flying away.

The painful breathing that precedes death is heard issuing from the long proboscis; and then follows a deep ominous silence.

Across the table came a strange primeval insect, with a thin, lancelike, excessively long proboscis and feelers on both sides.

The worst flies were the small grey species, with a long proboscis, similar to those that are often seen in houses in England.

I watch one land on a purple thistle head, and move its blue-black abdomen over the flower, carefully extracting nectar with its long proboscis.

Once more angrily elevating its tail, and sounding its shrill trumpet, it rushed towards the fallen tree, and buried its long proboscis among the branches.