The organ pipe mud dauber (Trypoxylon politum) is a type of wasp in the family Crabronidae. They are fairly large wasps, shiny black with pale hind tarsi. Male organ pipe mud daubers are among the few male wasps of any species to stay at the nest. A male "stands guard" (to prevent theft of prey or nest materials, as well as to ward off parasites) while a female is away collecting spiders. Mating typically occurs on her visits to the nest. They typically build their nests in sheltered locations, and large aggregations may form with dozens to hundreds of nests in a small area.
Organ pipe mud daubers are also an exceedingly docile species of wasp, and generally pleasant to have around, as they serve to keep spider populations down. Stings to humans are very rare, bordering on non-existent. However, if squeezed, Organ pipe mud daubers will sting in self-defense. There are a great many other species in the genus Trypoxylon (over 700 worldwide), mostly smaller in size and less abundant.
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“The only power deserving the name is that of masses, and of governments while they make themselves the organ of the tendencies and instincts of masses.”
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“Pan’s Syrinx was a girl indeed,
Though now she’s turned into a reed;
From that dear reed Pan’s pipe does come,
A pipe that strikes Apollo dumb;
Nor flute, nor lute, nor gittern can
So chant it, as the pipe of Pan;”
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“We sank a foot deep in water and mud at every step, and sometimes up to our knees, and the trail was almost obliterated, being no more than that a musquash leaves in similar places, where he parts the floating sedge. In fact, it probably was a musquash trail in some places.”
—Henry David Thoreau (1817–1862)