Bifa
The black imported fire ant (Solenopsis richteri), or simply BIFA, is a species of ant in the genus Solenopsis (fire ants). It was long thought to either be a subspecies or a color variation of Solenopsis invicta (the red imported fire ant, or simply RIFA), but is now recognized as its own species with a demonstratively different range and living habits. BIFA seem to be more tolerant of cold and a less dominant species than RIFA. Due to the BIFA higher body content of water than the RIFA conclusions demonstrate the certain factor plays a role in their differences of living regions.
The species is native to South America, but has been introduced to North America. In the United States, the official assessment is that BIFA are limited to extreme northeastern Mississippi, northwestern Alabama and a few southern counties in Tennessee, though this may reflect underestimation of their range. As of April 2013 their range has been found as far north as the tidewater area of Virginia, and as of July 2016 they have been reported near coastal South Carolina. Since the 2013 records, this species has been collected in NE Arkansas in several Craighead County localities. These collections are presumably the result of recent landscaping of new construction projects.
All stings of imported fire ants will produce a sterile pustule that is helpful in distinguishing them from the stings or bites of other insects. Pustules are surrounded by reddened swelling (wheal) with the redness (erythema) extending beyond (flare). The extent of reaction to imported fire ant stings is variable depending on the quantity of allergic (IgE) antibodies an individual has already formed. There may also be differences in the venom from the two species that result in more pronounced wheal and flare formation after stings from BIFA.
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CrepuscularCrepuscular animals are those that are active primarily during twilight (that is, the periods of dawn and dusk). This is distinguished from diurnal...
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DiurnalDiurnal animals are active during the daytime, with a period of sleeping or other inactivity at night. The timing of activity by an animal depends ...
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CarnivoreA carnivore meaning 'meat eater' is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of a...
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InsectivoresAn insectivore is a carnivorous plant or animal that eats insects. An alternative term is entomophage, which also refers to the human practice of e...
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FossorialA fossorial animal is one adapted to digging which lives primarily but not solely, underground. Some examples are badgers, naked mole-rats, clams, ...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
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OviparousOviparous animals are female animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive...
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Not a migrantAnimals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
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