Harlequin Ladybird Pupa (Harmonia axyridis)
The harlequin ladybird (Harmonia axyridis) is a multi-coloured Asian, or simply Asian ladybeetle, is a large coccinellid beetle.
These beetles make use of pheromones to signal to each other, resulting the large gatherings often seen in the autumn. However, many aggregations use visual cues, both at long (picking out light-coloured structures that are distinct from their surroundings) and short (picking out pre-existing aggregations to join) distances, while nonvolatile long-chain hydrocarbons laid down by previous aggregations also play a significant role in site selection. Both visual and hydrocarbon cues are more important than volatile pheromones.