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The grizzly bear (Ursus arctos horribilis), also known as the North American brown bear or simply grizzly, is a population or subspecies [4] of the brown bear inhabiting North America. In addition to the mainland grizzly ( Ursus arctos horribilis ), other morphological forms of brown bear in North America are sometimes identified as grizzly bears.
Pseudacteon tricuspis was the first species of Pseudacteon fly successfully used as a biological control agent for the imported red fire ant in the US. [2] Imported red fire ant Solenopsis invicta was accidentally introduced into the United States in Alabama in the 1930s. Since then, its populated area has expanded across the country, including ...
Nuptial flight is an important phase in the reproduction of most ant, termite, and some bee species. [1] It is also observed in some fly species, such as Rhamphomyia longicauda . During the flight, virgin queens mate with males and then land to start a new colony, or, in the case of honey bees , continue the succession of an existing hived colony.
The larvae had not been there the night before. The larvae were Apocephalus borealis, a parasitoid fly known to prey on bumblebees and wasps. The phorid fly lays eggs on the bee's abdomen, which hatch and feed on the bee. Infected bees act oddly, foraging at night and gathering around lights like moths. Eventually, the bee leaves the colony to die.
Nov. 11—A stop-and-go federal process to restore grizzly bears to Washington's rugged North Cascades began anew Thursday. However, unlike in previous efforts, the federal government is ...
A grizzly bear named "399" walks with her four cubs outside Jackson, Wyoming, in June 2020. The mother inhabits Grand Teton National Park and Bridger-Teton National Forest. A wise hiker will never ...
It is found in several ant species including the desert ant Cataglyphis cursor, [17] the clonal raider ant Cerapachys biroi, [18] the predaceous ant Platythyrea punctata, [19] and the electric ant (little fire ant) Wasmannia auropunctata. [20] It also occurs in the Cape honey bee Apis mellifera capensis. [21]
Plans announced this week by the National Park Service and U.S. Fish and Wildlife Service call for releasing three to seven bears a year for five to 10 years to achieve an initial population of 25.