![]() lancifolium ), and their hybrids, as well as fritillaries ( Fritillaria spp.), giant lily ( Cardiocrinum giganteum ), Canada mayflower ( Maianthemum canadense ), and cultivated onion ( Allium cepa ). Plant HostsĪdults and larvae can cause economic losses as they feed on plants in the Liliaceae family (true lilies), including both native and cultivated lily varieties ( Lilium spp.) such as Turk’s cap lily ( L. Image courtesy of Karly Fifarek (left) Bruce Watt, University of Maine, (center and right). Adult LLB laying eggs (left) LLB eggs (center and right). They are bright scarlet red to reddish-orange (Fig. Image courtesy of Rose Hiskes, Connecticut Agriculture Experiment Station (left) Richard A. Casagrande, University of Rhode Island, (right).Įggs are tiny and irregularly shaped and about 1/10 inch in length. Pupae are bright orange and encased in a whitish silk-like cocoon about 5/16 inches (9 mm) in length and made from saliva (Fig. ![]() Mehrhoff, University of Connecticut, (right). ![]() (left) LLB larvae feeding on host plant (right). LLB feces-covered larva feeding on Lilium spp. Larvae can reach up to about ½ inch (12 mm) in length when mature.įig. They cover their bodies with their own excrement and can resemble slimy greenish- brown slugs or a moving pile of animal feces (Liesch & Johnson, 2020). 4) are plump, squishy, and sluglike, with black heads and orange, yellow, brown, or rarely green bodies. They make a shrill sound (stridulate) when squeezed (Liesch & Johnson, 2020).įig. Adults readily drop from the host plant when disturbed and play dead as they lay upside down on the ground surface. The thorax and abdomen are shiny and scarlet red in color with tiny dimples, whereas the head, legs, antennae, and undersides are black. 1 to 3) are from 1/4 inch to 3/8 inch (6 to 9.5 mm) in length. If you suspect LLBs in Utah, please contact the Utah Plant Pest and Diagnostic Lab.Īdults (Figs. LLB adults are strong fliers which enables them to disperse to new locations, but this pest can also be introduced by hitchhiking on unsuspected host material that includes movement of potted Lilium plants. In its native range, LLB outbreaks are rare, but significant losses to lily crops are currently occurring where LLB has been introduced, including the Netherlands and Great Britain. where plants in the Liliaceae family occur (Freeman et al., 2020), which includes Utah. Based on LLB’s native distribution and habitat suitability, it is likely capable of establishing throughout most of the U.S. ![]() states, including the New England states, Pennsylvania, Wisconsin, Minnesota, and Washington (EDDMapS, 2021). LLB has been detected in nine of the 10 Canadian provinces and 14 U.S. in 1992 in Massachusetts, likely arriving via European shipments of lily bulbs. LLB was first reported in North America in Montréal, Canada, in 1945 and in the U.S. It is also known as the red lily leaf beetle or scarlet lily beetle. The lily leaf beetle (Coleoptera: Chrysomelidae) (LLB) is an important pest from Eurasia that threatens native and cultivated true lilies ( Lilium spp.) and fritillaries ( Fritillaria spp.). ![]()
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