The brown marmorated stink bug (Halyomorpha halys, (Stål, 1855)) is an insect in the family Pentatomidae, native to China, Japan, the Korean Peninsula, and Taiwan. In September 1998 it was collected in Allentown, Pennsylvania, where it is believed to have been accidentally introduced. The nymphs and adults of the brown marmorated stink bug feed on over 100 species of plants, including many agricultural crops, and by 2010–11 had become a season-long pest in orchards in the Eastern United States. In 2010, in the Mid-Atlantic United States, $37 million dollars in apple crops were lost, and some stone fruit growers lost more than 90% of their crops. It is now established in many parts of North America, and has recently become established in Europe and South America.
In this post I will show how to import observations data from EDDMapS and iNaturalist (see files attached at the bottom) and visualize its expansion through most US states in less than 20 years.
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