Forensic entomology When conditions are dry, the deprivation of moisture outside drives many pests inside searching for water. While the rainy weather increases the numbers of insects, this dry weather causes pest invasions to increase. The pests most commonly known during dry conditions are scorpions, ants, pillbugs, millipedes, crickets, and spiders. Extreme drought does kill many populations of insects, but also drives surviving insects to invade more often. Cold temperatures outside will cause invasions beginning in the late summer months and early fall. Box elder bugs, cluster flies, ladybugs, and silverfish are noticed some of the most common insects to seek the
Great Plague of Vienna population. To commemorate the city's deliverance from the Great Plague and later waves of the disease, the Viennese erected monuments such as the famous Baroque Karlskirche with the associated 69 foot plague columns known as the Pestsäule. What has become known as the "Great Plague of Vienna", was actually only a subset of a much larger outbreak across Germany, Austria, Bohemia and neighboring regions. This epidemic appears to have been carried into the region from two opposing directions. It had been raging in Western Europe for many years, traveling East by trade routes. The Great Plague of London of 1665–1666,