Leptinotarsa juncta
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Leptinotarsa juncta Germar, 1824 - (false potato beetle)
This beetle is found in eastern parts of North America, mainly in the south-eastern US. It is similar in appearance to the Colorado potato beetle (Leptinotarsa decemlineata), a serious pest of potatoes. The false potato beetle feeds on various Solanaceae, like the weed Solanum carolinense. Crops like egg plants (Solanum melongena) may also be affected.
The adults are around 10 mm long. Unlike the Colorado potato beetle, the larvae of L. juncta are usually much lighter and have only 1 row of black marks (2 rows in L. decemlineata). Their development goes through 5 instars. The adults of both species can be distinguished by the colour pattern on the elytra. For example, in L. juncta, one of the white stripes is replaced by a yellowish stripe.
- Other images of Leptinotarsa juncta (Wikipedia Commons - click to enlarge)
larvae
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