City Creek Nature Notes – Salt Lake City

September 28, 2016

September 27th

Filed under: Bald-Faced Hornets, Insects, Picnic site 9, Uncategorized, wasps — canopus56 @ 1:21 am

Some Hornets Tell a Bald-Faced Lie

2:00 p.m. Identifying insects is tough for an amateur. I always struggle with it. There are so many types of species and so many varieties of each insect, and for bees and wasps, each species may also look different depending on their role as queen, solider, or worker. No one book or online database can cover them all, and this makes classifying an insect seen in the canyon a difficult and time-consuming task. As an example, there is a wasp nest at mile 1.2, picnic site 9 (see September 16th) and, it is populated by a jet-black wasp with a yellow-tipped abdomen (see August 20th). Hornets are wasps that live in large social communities, that is in nests. The nest at picnic site 9 appears to have been built by Bald-faced Hornets (Vespula maculata). After standing in front of the nest with my monocular fixed on the nest entrance for a few minutes, I am able to see the characteristic white face markings of its inhabitants that classify this as a nest of Bald-faced hornets.

I still am unsure if these are the same wasps that I saw on August 20th. Those had yellow tips, but were jet-black and did not have the characteristic white markings found on the face of the Bald-faced Hornet. Were those earlier wasps just an immature phase of or a special worker class of the Bald-faced Hornet, or were they a completely different wasp specie? There are jet-black wasps such as cricket hunter wasps, and the meadow at mile 1.3 is full of crickets. But cricket hunting wasps generally are solitary, build underground nests, and do not have yellow tips. For now, I just continue to describe those earlier jet-black wasps with yellow tips as “unidentified”.

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