nest identification help - outdoor

Telford, PA

this is on a beam outside our front door. Can anyone identify it? thanks.

Thumbnail by philliesfan Thumbnail by philliesfan
Minot, ND

These are 'nests' constructed by wasps known as mud daubers, these occur in the families Sphecidae and Crabronidae. From the appearance of these nests, I would consider the species Sceliphron caementarium a likely candidate. See https://en.wikipedia.org/wiki/Black_and_yellow_mud_dauber

Telford, PA

thank you!

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