The common name of this familiar "ladybug" comes from the two white converging bars on the thorax behind the head (at least the bars converge as one moves to the rear). These insects cluster at high points over the hot summer months not returning to the lowland areas until the following spring. Favored locations depend on seasonal wind patterns. Some other ladybird species also form similar aggregations (problems arise when the location is a structure like someone's home).
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