Argentine Ants

The Argentine ant is a dark ant native to northern Argentina, Uruguay, Paraguay, and southern Brazil. It is an invasive species that has been established in many Mediterranean climate areas,[1] inadvertently introduced by humans to many places, including South Africa, New Zealand, Japan, Easter Island, Australia, Hawaii, Europe, and the United States.

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[edit] Description

The worker ants are about 3 millimetres (0.12 in) long and can easily squeeze through cracks and holes no more than 1 millimetre (0.039 in) in size. Queens are two to four times the length of workers. These ants will set up quarters in the ground, in cracks in concrete walls, in spaces between boards and timbers, even among belongings in human dwellings. In natural areas, they generally nest shallowly in loose leaf litter or beneath small stones, due to their poor ability to dig deeper nests. However, if a deeper nesting ant species abandons their nest, Argentine ant colonies will readily take over the space.

German entomologist Dr. Gustav L. Mayr identified the first specimens of Hypoclinea humilis in the vicinity of Buenos Aires, Argentina in 1866. This species was shortly transferred to the genus Iridomyrmex, and finally to Linepithema in the early 1990s.

[edit] Distribution

The native range of Argentine ants is limited to around major waterways in the lowland areas of the Paraná River drainage; They have recently spread into parts of Argentina, Brazil, Chile, Colombia, Ecuador, and Peru.[2] The species has become established in at least 15 countries throughout the world, on six continents as well as many oceanic islands.[3]

Bed Bugs

Lifecyles of the Bed Bug

 

When bed bugs (Cimex lectularius) have adequate available blood sources they also have a shorter lifespan. Bed bugs who feed regularly have a lifespan of ten months, while those without adequate feeding can live a little more than a year. If a blood host is available, bedbugs can live to see three generations of offspring ready willing and hungry to prey on their human hosts.

Bed bugs (females) deposit three to eight eggs at a time. A total of 300-500 eggs can be produced by a single bug. Their eggs are 1/25″ long and curved. They are often deposited in clusters and attached to cracks, crevices or rough surfaces near adult harborages with a sticky epoxy-like substance.

Eggs typically hatch in a week to 12 days. The freshly hatched nymph is beige-colored before feeding, and then turns a redish color after getting a blood meal. There are 5 nymphal stages for bed bugs to reach maturity, which usually takes about 32-48 days. Adult bed bugs can survive for up to seven months without blood and have been known to live in empty buildings for up to one year.