Bald-faced hornet Bald-faced hornet Dolichovespula maculata is a eusocial wasp of the cosmopolitan family Vespidae. Its colloquial names include the bald-faced hornet, bald hornet, white-faced hornet, white-tailed hornet, spruce wasp, blackjacket, and bull wasp. This species is a yellowjacket wasp, not a true hornet (genus "Vespa"). Colonies contain 400 to 700 workers, the largest recorded colony size in its genus, "Dolichovespula". It builds a characteristic large hanging paper nest up to 58 centimetres (23 in) in length. Workers aggressively defend their nest by repeatedly stinging invaders. "Dolichovespula maculata" is distributed throughout the United States and southern Canada, but is most common in
Vanzolini's bald-faced saki his assistant Miguel Moreira. The mammals in this expedition were collected alive and prepared as museum specimens, as described by Cory T. Carvalho, the mammalogist working at the Goeldi museum at the time After 61 years, in 2017, one individual was collected after being hunted for bush meat in an extractive community in the state of Acre, Brazil. After not being seen alive for more than 60 years, as F. Novaes and M. Moreira collected specimens in 1956, an individual was photographed in the wild in August 2017. Vanzolini's bald-faced saki Vanzolini's bald-faced saki ("Pithecia vanzolinii") is a species of