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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Ants, Bees and Stinging Wasps » Vespoidea » Hornets, Yellowjackets; Paper, Potter, Mason, and Pollen Wasps; and Allies (Vespidae) » Potter and Mason Wasps (Eumeninae) » Ancistrocerus » Ancistrocerus catskill
Photo#15948
mason wasp sleeping in a nest. - Ancistrocerus catskill
Copyright © 2005 tom murray

mason wasp sleeping in a nest. - Ancistrocerus catskill
Harvard, Worcester County, Massachusetts, USA
July 9, 2004
tag · login or register to post comments
Contributed by tom murray on 29 April, 2005 - 8:40pm
Last updated 15 February, 2006 - 8:11pm

Ancistrocerus cf. catskill
This is not Euodynerus leucomelas (which has a white band on the metanotum and a black scutellum) but one of two species of Ancistrocerus (scutellum with a pair of white spots, metanotum black). It seems to be the pale form of A. catskill (which was named albophaleratus). The similar A. waldenii has more extensive white markings. The nest biology also speaks against E. leucomelas (this species nests in borings in wood and does not make mud nests on surfaces). A. waldenii makes mud nests like the ones seen here, while A. catskill usually uses borings in wood (rarely however it makes free mud nests).
… Matthias Buck, 15 February, 2006 - 5:05pm login or register to post comments

 
Nest and larva
And here is the larva in the nest
… Beatriz Moisset, 16 July, 2012 - 9:54pm login or register to post comments

 
Ancistrocerus cf. catskill
The mud nest was built on the back side of a small welcome sign hanging on the side of the house. Thanks again for all the help.
… tom murray, 15 February, 2006 - 8:10pm login or register to post comments

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